Pressure Systems 9022 Users Manual

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Intelligent Pressure Scanner
User’s Manual
(Models 9016, 9021, 9022)
13th Edition
September 2007

NetScanner™ System

Visit us on the web:
www.PressureSystems.com

Pressure Systems, Inc.

NetScanner™ System (9016, 9021, & 9022) User’s Manual

©This User’s Manual is a copyright product of Pressure Systems, Inc. , 2007.
Permission is hereby granted to make copies and distribute verbatim copies of this
manual, provided the copyright notice and this permission notice are preserved on all
copies.

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Pressure Systems, Inc.

REVISION

NetScanner™ System (9016, 9021, & 9022) User’s Manual

REVISION HISTORY

PRINT
DATE

Original - 2nd Edition

4/94

3rd Edition (add Model 902x and 9016)

11/97

4th Edition

3/98

5th Edition

9/99

6th Edition

03/00

7th Edition (delete Optomux references and add
multi-point calibration procedures) (add information about the 9021R- ruggedized version)

02/01

8th Edition (officially change name from 9021R
to 9022, a new ruggedized version of the 9021)

03/02

9th Edition (added new commands and updates
to Chapter 3, Chapter 4, and Chapter 5 to accommodate the 9022)

07/02

10th Edition (new Chapter 7 - deletes all references to NETSTART as the startup software,
and replaces it with a brief description of NUSS

11th Edition adds information regarding using
the 9022 with third-party transducers that do not
have temperature compensation. Changes wiring diagram.

01/02

06/03

12th Edition deletes references to the Repair
Department for RMAs.

04/04

Includes Application Note concerning mixing
transducers with and without temperature sensor
attached to Model 9022 and adds references for
high frequency in Model 9022.

01/05

Added new commands for Model 9022 & Model
9016

09/07

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Pressure Systems, Inc.

NetScanner™ System (9016, 9021, & 9022) User’s Manual

Preface
This manual describes the NetScanner System Intelligent Pressure Scanner modules (Models
9016, 9021, and 9022). It does not cover the 98RK Scanner Interface Rack, model 9816
Intelligent Pressure Scanner, nor models 903x (Pressure Standards/Controllers) and the 9116
Intelligent Pressure Scanner. These products are covered in their individual User’s Manuals.
This manual is divided into seven (7) chapters and several appendices, each covering a
specific topic. They are summarized below:
Chapter 1:

General Information

describes Models 9016, 9021, and 9022
Intelligent Pressure Scanners and their
various options.

Chapter 2:

Installation and Set Up

describes the unpacking and inspection of
a module, and its connection to power,
pressure, and a communications network.

Chapter 3:

Programming & Operation

provides the information needed to
program a module from a host computer
and to get meaningful data from it.

Chapter 4:

Calibration

describes methods of calibrating a
module.

Chapter 5:

Service

describes general safety precautions and
maintenance procedures.

Chapter 6:

Troubleshooting

describes module troubleshooting
techniques.

Chapter 7:

Start-up Software

briefly describes NUSS software.

Appendix A:
Appendix B:
Appendix C:
Appendix D:
Appendix E:
Appendix F:
Appendix G:

All Commands — Quick Reference
Response Error Codes
Cable Diagrams
Module Mounting Dimensions
NetScanner System Range Codes
NetScanner™ System/9000 Series Products
Binary Bit Map

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

Our Company
Pressure Systems Incorporated, (PSI) develops, manufactures, and services level and pressure
measuring instruments where the highest level of traceable accuracy is required for
aerospace, industrial, municipal, and environmental applications. Our products have
become the world standard for electronic level and pressure measurement and scanning. We
are committed to the highest quality design, manufacture, and support of level and pressure
instrumentation that is in the best interest of our customers. PSI is an ISO9001:2000
certified company.

Our Warranty
Pressure Systems, Inc., warrants NetScanner™ System products to be free of defects in
material and workmanship under normal use and service for one (1) year.

Technical Support
Monday through Friday, during normal working hours, (7:30 am through 5:30 pm,
Eastern time) knowledgeable personnel are available for assistance and troubleshooting.
Contact the Applications Support Group or the Customer Services Department at
Pressure Systems (757-865-1243 or toll free 1-800-328-3665) if your scanner is not
operating properly or if you have questions concerning any of our products. E-mail
assistance is available by contacting Applications@PressureSystems.com.

Merchandise Return Procedures
If your scanner needs to be returned to Pressure Systems, obtain a Returned Merchandise
Authorization (RMA) from the Customer Service Department.
Be prepared to supply the following information when requesting the RMA:
!
!
!
!
!
!

Part number
Serial number
Complete description of problems/symptoms
Bill To and Ship To address
Purchase order number (not required by PSI warranty repairs)
Customer contact and telephone number

The above information, including the RMA number must be on the customer’s shipping
documents that accompany the equipment to be repaired. PSI also requests that the
outside of the shipping container be labeled with the RMA number to assist in tracking
the repairs. All equipment should be sent to the following address:

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Pressure Systems, Inc.

NetScanner™ System (9016, 9021, & 9022) User’s Manual

ATTN: PSI REPAIR DEPARTMENT (7-digit RMA number)
Pressure Systems, Inc.
34 Research Drive
Hampton, Virginia 23666
PSI will return warranty items prepaid via UPS GROUND. If the customer desires
another method of return shipment, PSI will prepay and add the shipping charges to the
repair bill.
Incoming freight charges are the customer’s responsibility. The customer is also
responsible for paying shipping charges to and from PSI for any equipment not under
warranty.
All products covered under the PSI warranty policy will be repaired at no charge. An
analysis fee will be charged to quote the cost of repairing any item not under warranty. If,
for any reason, the customer decides not to have the item repaired, the analysis fee will
still be charged. If the quote is approved by the customer, the analysis fee will be waived.
The quote for repair will be based on the PSI flat rate for repair, calibration, and board
replacement. When these prices do not apply, the quote will be based on an hourly labor
rate plus parts. All replaced parts are warranted for 90 days from the date of shipment.
The 90-day warranty is strictly limited to parts replaced during the repair.

Website and E-Mail
Visit our website at www.PressureSystems.com to look at our new product releases,
application notes, product certifications, and specifications. E-mail your questions and
comments to us: Sales@PressureSystems.com.

Our Firmware
This manual was prepared for various versions of module firmware as were released at the
time of this manual publication. Addenda will be distributed as deemed necessary by PSI.
Any questions regarding firmware upgrades may be addressed to the Applications Support
Group. Firmware revisions, manual addenda, and utility software may also be obtained
from the PSI web page at www.PressureSystems.com.

Our Publication Disclaimer
This document is thoroughly edited and is believed to be thoroughly reliable. Pressure
Systems, Inc., assumes no liability for inaccuracies. All computer programs supplied with
your products are written and tested on available systems at the factory. PSI assumes no
responsibility for other computers, languages, or operating systems. PSI reserves the right
to change the specifications without notice.
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NetScanner™ System (9016, 9021, & 9022) User’s Manual

Table of Contents
Chapter 1 — General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2
Description of Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.1 Pressure Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.2 Manifolds and Pressure Connections . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.3 Communications Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1
1-1
1-3
1-4
1-4
1-4
1-5

Chapter 2 — Installation and Set Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1
Unpacking and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.2
Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.3
Preparation for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.3.1 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.3.2 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.3.3 Mounting and Module Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.3.4 Network Communications Hookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.3.4.1 Ethernet Host Port Hookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.3.5 Diagnostic Port Hookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.3.6 Pressure Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.3.6.1 RUN Mode Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2.3.6.2 CAL Mode Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2.3.6.3 Purge Mode Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2.3.6.4 Leak Mode Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2.3.6.5 Supply Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2.3.7 9021 and 9022 Transducer Installation . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2.3.7.1 Installation of 9400, 9401, and 9402 Transducers . . . . . . . . . . 2-10
2.3.7.2 Installation of All Other Transducers . . . . . . . . . . . . . . . . . . . . 2-11
2.3.8 Case Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.3.9 Trigger Input Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
2.3.10 Power Up Checks and Self-Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Chapter 3 — Programming and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1
Commands and Responses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.1.1 TCP/UDP/IP Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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3-1
3-1
3-1
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NetScanner™ System (9016, 9021, & 9022) User’s Manual

Table of Contents (Cont.)
3.1.2

3.2

Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.1.2.1 General Command Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.1.2.2 Command Field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.1.2.3 Position Field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.1.2.4 Datum Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.1.2.5 Format Field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.1.3 Responses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.1.3.1 Interpreting Offset Values (Re-zero Calibration Adjustment) . . 3-5
3.1.3.2 Interpreting Gain Values (Span Calibration Adjustment) . . . . . 3-6
3.1.3.3 Interpreting Engineering Unit Output . . . . . . . . . . . . . . . . . . . . 3-6
3.1.4 Functional Command Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.1.4.1
Startup Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.1.4.2 Module Data Acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
3.1.4.3 Calibration Adjustment of Offset/Gain
Correction Coefficients . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.1.4.4 Delivery of Data to Host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
3.1.4.5 Network Query and Control Functions . . . . . . . . . . . . . . . . . . . 3-9
3.1.4.6 Other Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Detailed Command Description Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
A
Power Up Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
B
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
C
Configure/Control Multi-Point Calibration . . . . . . . . . . . . . . . . . . . . . 3-14
V
Read Transducer Voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
Z
Calculate and Set Gains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24
a
Read Transducer A/D Counts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26
b
Read High-Speed Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28
c
Define/Control Autonomous Host Streams . . . . . . . . . . . . . . . . . . . . . 3-29
h
Calculate and Set Offsets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-45
m
Read Temperature Counts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-47
n
Read Temperature Voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-49
q
Read Module Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-51
r
Read High-Precision Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-54
t
Read Transducer Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-56
u
Read Internal Coefficients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-58
v
Download Internal Coefficients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-62
w
Set Operating Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-65
psi9000
Network Query . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-69
psireboot
Re-boot Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-71
psiarp
Change Module’s IP Address Resolution and Re-boot . . . . . . 3-72
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NetScanner™ System (9016, 9021, & 9022) User’s Manual

Table of Contents (Cont.)
3.3

Obsolete Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-73

Chapter 4 — Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.2
Re-zero Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4.2.1 Re-zero Calibration Valve Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4.2.2 Re-zero Calibration Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4.3
Span Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4.3.1 Span Calibration Valve Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4.3.2 Span Calibration Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.4
Integrated Multi-Point Calibration Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4.4.1 Calibration Valve Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.4.2 Multi-Point Calibration Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.5
9021/9022 Analog Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4.5.1 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
4.5.2 Calibration Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
4.6
Coefficient Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
4.7
Non-Volatile Parameter Storage for “non-Digitally Compensated” Pressure Sensors
(9021/9022 Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
4.8
Line Pressure Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
Chapter 5 — Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.1
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.1.1 Common Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.1.2 Module Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.1.3 Electronic Circuit Board Replacement . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.1.3.1 PC-206 Amplifier/Multiplexer Board . . . . . . . . . . . . . . . . . . . . 5-4
5.1.3.2 PC-242 Amplifier/Multiplexer Board . . . . . . . . . . . . . . . . . . . . 5-5
5.1.3.3 PC-280 Ethernet Microprocessor /A/D Board . . . . . . . . . . . . . . 5-6
5.1.3.4 PC-315, PC-316, and PC-317 Boards . . . . . . . . . . . . . . . . . . . . 5-7
5.1.4 Replacement of Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
5.1.5 Calibration Valve Solenoid Replacement . . . . . . . . . . . . . . . . . . . . . . 5-10

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

Table of Contents (Cont.)
5.1.6

5.2
5.3
5.4

Replacement of O-Rings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1.6.1 DH200 Pressure Transducer O-Ring Replacement . . . . . . . . .
5.1.6.2 Tubing Plate O-Ring Replacement . . . . . . . . . . . . . . . . . . . . .
5.1.6.3 Adapter Plate O-Ring Replacement . . . . . . . . . . . . . . . . . . . . .
5.1.6.4 Calibration Manifold Piston O-Ring Replacement . . . . . . . . .
5.1.6.5 Solenoid Valve O-Ring Replacement . . . . . . . . . . . . . . . . . . .
9022 Excitation Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9022 Procedure for Changing the Excitation Jumper Setting (JB1) . . . . . . . .
Upgrading Module Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2.1 Upgrading Firmware Via Host TCP/IP Port . . . . . . . . . . . . . . . . . . . .

5-10
5-11
5-12
5-13
5-14
5-15
5-16
5-17
5-17
5-18

Chapter 6 — Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1
Ethernet Module Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1.1 Checking Module Power-up Sequence . . . . . . . . . . . . . . . . . . . . . . . . .
6.1.2 Checking Module TCP/IP Communications . . . . . . . . . . . . . . . . . . . . .
6.1.2.1 Module IP Address Assignment . . . . . . . . . . . . . . . . . . . . . . . .
6.1.2.2 Host IP Address Assignment for Windows 95/98/NT . . . . . . . .
6.1.2.3 Verifying Host TCP/IP Communications . . . . . . . . . . . . . . . . .
6.2
Zero and Gain Calibration Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.3
User Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-1
6-1
6-1
6-2
6-2
6-4
6-4
6-6
6-7

Chapter 7 — Start-up Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

Appendices
Appendix A:
Appendix B:
Appendix C:
Appendix D:
Appendix E:
Appendix F:
Appendix G:

All Commands — Quick Reference
NetScanner System Response Error Codes
Cable Diagrams
Mounting Diagrams
NetScanner™ System Range Codes
NetScanner™ System/9000 Series Products
Binary Bit Map

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

List of Figures
Figure 1.1
Figure 2.1
Figure 2.3
Figure 2.3
Figure 2.4
Figure 2.4a
Figure 2.5
Figure 4.1
Figure 4.2
Figure 4.3
Figure 4.4
Figure 4.5
Figure 5.1
Figure 5.1a
Figure 5.2b
Figure 5.2c
Figure 5.2
Figure 5.2a
Figure 5.3
Figure 5.3a
Figure 5.3b
Figure 5.4
Figure 5.5
Figure 5.6
Figure 5.7
Figure 5.8
Figure 5.9

NetScanner System Pneumatic Intelligent Pressure Scanners . . . . . . . . 1-2
9016, 9021, 9022 Power Pin Assignments . . . . . . . . . . . . . . . . . . . . . . 2-2
Ethernet Host Port Connector Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Ethernet Network Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
9021 Transducer Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
9022 Transducer Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
9022 Jumper Set for 10 VDC Excitation . . . . . . . . . . . . . . . . . . . . . . . 2-11
Calibration Manifold RUN Position . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Calibration Manifold CAL Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Calibration Manifold PURGE Position . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Calibration Manifold LEAK CHARGE Position . . . . . . . . . . . . . . . . . 4-2
9021 and 9022 Voltage Input Connections . . . . . . . . . . . . . . . . . . . . . 4-11
Exploded View of 9016 and 9022 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
9016 Top Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
9021 Top Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
9022 Top Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
9016 Scanner Out of Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
9022 Scanner Out of Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
PC-203 Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
9022 PCBs Outside the Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
9022 PCBs Apart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Top View of DH200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Solenoid in Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
DH200 Transducer O-Ring Replacement . . . . . . . . . . . . . . . . . . . . . . 5-11
Solenoid Valve O-Ring Replacement . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
PC-317 Board (Trim Potentiometer and Jumper) . . . . . . . . . . . . . . . . 5-16
Update Firmware Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

List of Tables
Table 2.1
Table 3.1
Table 3.2
Table 5.1

Diagnostic Port Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Intelligent Pressure Scanner Commands . . . . . . . . . . . . . . . . . . . . . . . 3-10
Component Cross Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

Chapter 1
General Information
1.1

Introduction

This User’s Manual will:
!
Explain the electrical and pneumatic pressure connections for the NetScanner™
System Models 9016, 9021, and 9022 Intelligent Pressure Scanners.
!
Instruct you on how to program each module with computer software.
!
Instruct you on using the PSI start-up software to manipulate and acquire data from
each module.
Model 9016 is a pneumatic Intelligent Pressure Scanner, with integral pressure transducers and a
pneumatic calibration manifold.
Models 9021 and 9022 are all-media Intelligent Pressure Scanners which may be fitted with up to
twelve (12) external all-media transducers (9400, 9401, 9402, or third party). Because of the external
nature of these transducers, and the variety of pneumatic or hydraulic media supported, the 9021/9022
do not contain an integral calibration manifold.
Both models provide engineering unit pressure data with guaranteed system accuracy. This is
achieved by reading factory-determined pressure and temperature engineering-unit data conversion
coefficients from their transducers’ nonvolatile memories at power-up. They also allow additional
adjustment coefficients to be “fine-tuned” with a multi-point calibration under host control (e.g.,
possibly utilizing optional Pressure Systems 903x Pressure Calibrator modules).
Models 9016, 9021, and 9022 provide 10-Base-T Ethernet communications for their Host Port (with
TCP/UDP/IP protocol).

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NOTE:

NetScanner™ System (9016, 9021, & 9022) User’s Manual

The newest PSI Intelligent Pressure Scanner is the 9022. Its serial numbers
begin with 1000. The 9022 is similar in function to the 9021 (using external
sensors), however, the 9022 features circular (military style connectors),
splash-proof case and connectors, antialiasing filters, and a jumper
selectable precision 5 or 10 volt excitation voltage for use with third-party
sensors. The overall dimensions of the 9022 are slightly larger than the
9021 due to a thicker top plate.

Model 9016

Model 9021

Model 9022

Figure 1.1
NetScanner System Models 9016, 9021, and 9022 Intelligent Pressure Scanners
™

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1.2

NetScanner™ System (9016, 9021, & 9022) User’s Manual

Description of Instruments

NetScanner™ System family of Intelligent Pressure Scanner modules are flexible pressure
measuring devices intended for use in test and production environments. Models are available
with 12 (Model 9021/9022), or 16 (Model 9016) channels, each with individual pneumatic or allmedia transducers per channel. The most distinctive features are highlighted below:
!

Pre-calibrated Transducer — a memory chip containing full calibration data is
embedded within each internal transducer (9016) or external Series 9400
transducer (9021/9022).

Individual transducer per measurement input channel — mixed transducer ranges
may be installed in a single 9016 module or attached to a 9021/9022 module.

Low cost per point — per-channel cost is less than a typical industrial pressure
transducer/transmitter.

High accuracy — Model 9016 pressure scanners are capable of accuracies up to
±0.05%. Accuracy is maintained through use of built-in re-zero, span, or multipoint calibration capabilities. Model 9021/9022 pressure scanners provide
accuracies better than ±0.10% FS. Accuracy is maintained for six (6) months after
calibration.

Low thermal errors —each internal transducer and each external 904x transducer
contains an individual temperature sensor and thermal calibration data for internal
use by software correction algorithms. Thermal errors are reduced as low as
±0.001%FS/ºC over the calibrated temperature span.

Re-zero upon demand (Models 9016) — an integrated calibration valve allows for
automatic re-zero adjustment calibration of dry gas transducers to null offset drift
errors.

Ease of transducer replacement — factory calibrated transducer assemblies may
be stocked and rapidly replaced in the field. Storage of thermal coefficients
within the transducer allows for ‘plug and play’ transducer replacement.

Ease of calibration — each 9016 module contains a pneumatic calibration
manifold and software commands to automatically perform re-zero, span, and
multi-point adjustment calibrations. New offset and gain coefficients that result
from the most recent calibration may be stored in non-volatile transducer memory.

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Measurement flexibility — each 9021/9022 module is capable of measuring
general purpose voltage signals on any channel not populated with a 9400-type
transducer. Full-scale ranges of ±50, ±100, ±250 and ±4500 mV are supported
through programmable gain amplifier circuitry.

Ease of use — modules have simple command sets and provide engineering units
output. They may interface directly to a desktop or laptop computer or they may
be interconnected into a large network controlled by many types of host
computers.

Connectivity — use of industry-standard communications network protocols to
control and read data from NetScanner™ System modules allows distribution to
the point of measurement and ensures compatibility with third party hardware and
software.

1.3

Options

1.3.1

Pressure Ranges

Model 9016 contains sixteen (16) DH200 transducers. These transducers are available with full
scale pressure ranges from 10" H 2O (inches of water column) to 750 psid (2.5 kPa to 5200 kPa).
Transducers with different pressure ranges may be combined in a single module.
Models 9021 and 9022 can attach up to twelve (12) Series 9400 or third party external all-media
transducers. The 9400 gauge-type transducers are available with full-scale pressure ranges from
5 psi to 10,000 psi (35 kPa to 69000 kPa). The 9401 absolute-type transducers are available
with full-scale pressure ranges from 15 psia to 10,000 psia (105 kPa to 69000 kPa). The 9402
wet-wet differential type transducers are available with full scale ranges from 5 psi to 250 psi (35
kPa to 1725 kPa). Transducers with different pressure ranges may be attached to a single
module.
Please consult the Sales Department at Pressure Systems for availability of other pressure ranges
(1-800-678-SCAN (7226)).

1.3.2

Manifolds and Pressure Connections

Model 9016 sixteen-channel Intelligent Pressure Scanners are available with a true differential or
common reference pneumatic manifold, and have a standard purge and leak check manifold.
They are available with standard 1/8" or optional 1/16" and 1/4" compression fittings. All
fittings

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

utilize an SAE 5/16 - 24 O-ring boss which supports a variety of other adapter compression
fittings. They are also available with a quick disconnect plate which contains 0.063" bulge
tubulation. The common differential version is available with all choices of fittings. The true
differential version is available with 0.063" bulged tubulation fittings only.
Models 9021 and 9022 12-channel Intelligent Pressure Scanners have no internal manifold or
pressure transducers. Instead, they have up to twelve (12) externally connected type 9400, 9401,
or 9402 all-media pressure transducers. 9400, 9401, and 9402 transducers may be purchased with
a variety of standard pressure fittings. Any necessary valves and manifolds must be customersupplied if automatic calibration with the appropriate medium is desired at the module
installation site. Both the 9021 and 9022 scanners are designed to operate with either PSI or
third-party transducers.
Consult the Sales Department at Pressure Systems at 1-800-678-SCAN (7226) for availability of
other input fittings.

1.3.3 Communication Interfaces
All standard NetScanner™ System Intelligent Pressure Scanners provide temperature
compensated and linearized pressure data in engineering units via digital methods. They have a
10Base-T Ethernet host communications interface using industry standard TCP/IP or UDP/IP
protocol. This interface provides high data transfer rates and system connectivity.

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Chapter 2
Installation and Set Up
2.1

Unpacking and Inspection

The NetScanner™ System product family has many components which may be purchased either as
an entire system, or as individual pieces of equipment. Before assembling the system, use the
shipping bill as a reference to ensure that all parts have arrived. Pressure Systems takes no
responsibility for equipment that is damaged during shipment. If containers are broken, ripped, or
damaged, contact the transportation carrier. If the equipment itself appears to be damaged, contact
the Repair Department at Pressure Systems.
Each NetScanner™ System Intelligent Pressure Scanner shipment will contain the following
minimum components:
!
!
!

2.2

Model 9016 or 9021/9022 Intelligent Pressure Scanner module
Start-up software diskette(s) or CD-ROM
NetScanner™ System User’s Manual for Intelligent Pressure Scanners (Models
9016/9021/9022) (Hard copy and/or CD-ROM)

Safety Considerations

Always wear safety glasses when operating this equipment or when working with pressurized lines.
Always ensure that high pressure lines are properly secured and that all pneumatic lines are rated for
the proper pressure and temperature environments.
All system power should be OFF during installation (or removal) of any components in a
NetScanner™ System module. Failure to turn power OFF prior to installation may cause permanent
damage to the module. Use caution and check line voltages before applying power to the module.

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2.3

Preparation for Use

2.3.1

Environment

All standard Intelligent Pressure Scanners are factory calibrated to be accurate over a specified
temperature range, but may be operated or stored over a wider temperature range (see NetScanner™
System Data Sheet, published separately). Operating or storing an instrument outside its specified
range(s) will result in a loss of measurement accuracy and may cause permanent damage to the
instrument electronics.
WARNING: Exceeding the specified storage or operating
temperatures may result in permanent damage to the
NetScanner™ System electronics.

2.3.2 Power
Models 9016, 9021, and 9022 Intelligent Pressure Scanners need only a single unregulated power
supply.
Models 9016 and 9021/9022 have a single round, ruggedized connector through which all power and
input/output signals pass as shown in Figure 2.1.
Improper connection of power to the Intelligent Pressure
Scanner can result in permanent damage to module electronics.
WARNING:

Figure 2.1
9016, 9021, 9022 Power Pin Assignments
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2.3.3 Mounting and Module Dimensions
Detailed mechanical drawings for each module are included in Appendix D.

2.3.4

Network Communications Hookup

Every NetScanner™ System Intelligent Pressure Scanner contains a Host Port, allowing it to be
interconnected in a network with other modules and a host computer. Models 9016, 9021, and 9022
have an Ethernet Host Port using TCP/IP and UDP/IP transmission protocols.
2.3.4.1

Ethernet Host Port Hookup

The Ethernet Host ports of every model 9016, 9021, and 9022 Intelligent Pressure Scanner module,
and its host computer, may be interconnected in a “star” network via a standard 10-Base-T
interconnection hub or switch. These standard devices will have their own power requirements.
Such a hub treats the host computer connection and all NetScanner™ System module connections
alike. Ethernet communications pin assignments for the 9016, 9021, and 9022 electrical connector
are shown in Figure 2.2. See Figure 2.3 for typical network topology.

Figure 2.2
Ethernet Host Port Connector Pins

The host and each module must have a unique Ethernet Hardware Address (a.k.a. MAC Address)
and a unique IP Address. The Ethernet Hardware address is generally fixed (at manufacturing time
of the Ethernet microprocessor board inside the module). The Ethernet Hardware address is shown
on each module’s label. The Ethernet Intelligent Pressure Scanners are capable of supporting various
methods for IP address assignment, using either the factory default (static IP addressing) or user2-3

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

configured Static IP addressing or Dynamic IP address assignment. Dynamic IP address assignment
is through the use of RARP or BOOTP protocols. Unless your application requires the use of
Dynamic IP address assignments, it is strongly suggested that the module be left configured for the
Static IP address protocol. This default method is typically the simplest method for using the
Intelligent Pressure Scanner.
In the Static IP addressing mode, the module will use a factory default IP address on power-up. This
default address is set to 200.20x.yyy.zzz where x is derived from the module type (0 for 9016 and
1 for 9021/9022) and yyy.zzz is derived from the module serial number. A similar method is used
to calculate each module’s Ethernet hardware address shown on the module tag. Note that each of
these fields (separated by a period, ‘.’) is a decimal representation of a byte value. This means that
each field may have a maximum value of 255. For 9016 modules with serial less than 255, this
default IP address will be 200.200.0.zzz where zzz is the serial number (i.e., 9016 serial number 212
is IP 200.200.200.212) . For 9016 modules with serial numbers greater than 255, the default IP of
200.200.y.zzz is calculated as follows:
y is the integer result of dividing the module serial number by 256.
zzz is the remainder of dividing the serial number by 256 (serial number modulus 256).
These calculations may be verified by checking that y * 256 + zzz equals the original module serial
number. Once a module has powered-up and has assigned itself a default IP address it is capable of
communications.
An alternate method for assigning an IP address to an Ethernet module is referred to as a Dynamic
IP assignment. This method allows a module to have its IP address dynamically assigned at powerup by an application running on a node of the TCP/IP or UDP/IP network. When configured for
Dynamic IP address assignment protocols, the reset module will broadcast its Ethernet hardware
(MAC) address on the network in a Dynamic IP request packet. This broadcast packet identifies the
module by its hardware address and requests that a dynamic IP server application return to it an IP
address for use. Once this broadcast message is received, the dynamic server application will then
return an IP address to the module in a dynamic IP reply packet. Most dynamic IP server
applications determine this IP address from a user maintained file that lists Ethernet hardware
addresses with their desired IP address. If modules are added to the network or module IP addresses
are to be changed, the user can simply edit this configuration file. This capability is common on
most UNIX based machines and is also available (although less common) in some TCP/IP packages
available for PC platforms.
Support of the Dynamic IP server protocol is not currently included in the Windows® 95/98 or
Windows® NT operating systems. In order to allow users of PC platforms to make use of the
Dynamic IP capabilities of the 9016, 9021, and 9022, a simple Windows® 95/98/NT application was
developed by Pressure Systems which is capable of acting as a Dynamic IP server. This application
is referred to as BOOTP Lite since it actually makes use of the BOOTP protocol that closely
resembles the Dynamic IP request. Like traditional dynamic IP servers, this application allows the
user to configure a file that contains Ethernet hardware addresses and the corresponding IP address
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to assign to those devices. This application is free of charge and capable of running as a background
program on Windows® 95/98/2000 and NT machines. It may be downloaded from the PSI internet
home page, www.PressureSystems.com.
NOTE: After closing the TCP/IP connection to the module, the host must wait 10
seconds before re-connecting.

Use of Static or Dynamic IP settings may be selected through the Set Operating Options ('w')
command. If you are unsure how your module is configured, check the Tx LED during module
power-up. If it begins to blink periodically after the module power-up, your instrument is configured
for the Dynamic IP assignment protocol. (Tx LED remains OFF in static IP configuration.) If
configured for Dynamic IP assignment, a dynamic server must be configured on the network to
return an IP address to the module. Without an IP address, the host will be unable to open a TCP/IP
or UDP/IP connection to the module.

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Figure 2.3
Ethernet Network Topology

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2.3.5

NetScanner™ System (9016, 9021, & 9022) User’s Manual

Diagnostic Port Hookup

Each NetScanner™ System module contains a Diagnostic Port that supports diagnostic and
operational functions. The Diagnostic Port has only a simple RS-232 asynchronous serial interface.
The connections are made via certain pins of its common circular connector. Cable connection
should be made according to Table 2.1.
Table 2.1
Diagnostic Port Wiring
NetScanner™
System
Diagnostic Port
Connector
GND
Tx
Rx

The RS-232 interface is capable of supporting simple asynchronous communications with fixed
parameters of 9600 baud, no parity, 8 data bits, and 1 stop bit. Only communication cable lengths
less than 30 feet (10 m) are recommended.
The 9016, 9021 and 9022 use the diagnostic interface for optional configuration and diagnostic
purposes only. The diagnostic port functions on the 9016, 9021, and 9022 are generally not required
by the end user. Standard cables for these modules do not include diagnostic port connections.

2.3.6

Pressure Connections

All pneumatic connections to Model 9016 are found on the instrument top panel. The function of
each input port is clearly engraved or printed next to each input. Connections are through bulge
tubing, compression fittings or special user-supplied fittings on the tubing plate. All pneumatic
inputs to these modules should contain dry, non-corrosive gas only. For Model 9021/9022, all
pneumatic or hydraulic connections are to the individual 9400, 9401, or 9402 (or third party) allmedia transducers mounted externally from the module itself.
All 9016 standard Intelligent Pressure Scanners are supplied with the purge/leak check calibration
manifold. Through software commands, this valve may be placed in one of four positions; RUN,
CAL, PURGE, or LEAK-CHARGE. Pneumatic input requirements for these four operating
positions are described in the following sections.

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The following guidelines should be used when installing pressure connections to all NetScanner™
System Intelligent Pressure Scanner modules.
!

Always wear safety glasses when working with pressurized lines.

Ensure that user input pressure will not exceed the proof pressure ratings of the
corresponding instrument transducer. Applying excessive pressure to measurement
inputs can permanently damage the pressure transducers.

Ensure that all tubing material is rated for the expected pressure and environmental
conditions. Failure to use the proper tubing material may result in ruptured lines and
possible personal injury.

Ensure all high pressure lines are properly secured.

Place retaining springs over all bulge tube fittings to ensure pneumatic lines remain
attached and leak free. Springs should be pushed down on connections so that half
of the spring length extends past the tube bulge.

Warning: Introduction of contaminants or corrosive materials to the module
pneumatic inputs may damage module transducers, manifolds, and O-ring seals.

Users of the 9021 and 9022 may proceed to Section 2.3.7 since these modules do not require
any pneumatic connections to the module itself.
2.3.6.1

RUN Mode Inputs

The standard pneumatic tubing plates (for the 9016) contain sixteen numbered pneumatic input
channels. These numbered inputs are attached to corresponding pressure transducers inside the
instrument and should be pneumatically attached to the pressure measurement points under test.
The standard tubing plate also contains an input labeled RUN REF. The RUN REF input is
pneumatically connected to the reference side of all internal DH200 pressure transducers. The RUN
REF connection is used for situations where all channels have one reference pressure. The reference
pressure may be as high as 250 PSI (1720 kPa). This input may also be left unattached to provide
atmospheric reference pressure.
When using instruments with the reference per channel option (true differential), two pneumatic
inputs will be provided for every numbered channel. These inputs are labeled ‘P’ and ‘R’. The ‘P’
connection is the test pressure input. The ‘R’ connection is the transducer reference input pressure.
Since each channel has its own reference pressure input, the RUN REF input is not provided on the
true differential tubing plate.
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2.3.6.2

NetScanner™ System (9016, 9021, & 9022) User’s Manual

CAL Mode Inputs

The 9016 model tubing plates contain inputs labeled CAL and CAL REF. When the module’s
internal calibration valve is placed in the CAL/RE-ZERO position, all DH200 transducer pressure
inputs are pneumatically connected to the CAL input port. All DH200 reference inputs are
pneumatically connected to the CAL REF input port. The CAL input may be used to perform
on-line zero adjustment of the transducers. The CAL input may also be used for DH200 span
adjustment calibrations and accuracy tests if appropriate pressure calibrators (such as the 903x series)
are available. Span calibration of multi-range scanners may also utilize the CAL port if the highest
applied pressure does not exceed the proof pressure rating of any other installed transducer,
otherwise the individual transducers must be calibrated with the valve in the RUN position.
When the internal calibration valve is in the CAL/RE-ZERO position, the RUN inputs (RUN REF
and numbered input ports) are pneumatically dead-ended to prevent migration of contaminants into
the instrument.
2.3.6.3

PURGE Mode Inputs

All standard 9016 models contain a purge/leak check option. The purge option allows users to apply
positive pressure to the PURGE input which will then be vented out of the user input ports, forcing
contaminants (such as moisture) out of the pneumatic input lines. Note that on common reference
9016 scanners, only the numbered input ports will be purged (RUN REF is not purged). True
differential 9016 scanners will purge both the run and reference input ports for all channels. The
purge supply provided to the 9016 must always be a higher pressure than the highest pressure
present on the input ports of the module. The purge supply must also be capable of
maintaining proper purge pressure at the high flow rates encountered while the module is in
the purge mode.
Warning:
Failure to provide proper purge supply pressure
will result in migration of moisture and contaminants into the
9016 module which can result in permanent damage to module
components.

When commanded into the PURGE position, the purge input pressure will be connected to the
numbered measurement input ports allowing for a flow of air away from the instrument. The purge
cycle should be terminated by commanding the 9016 into a non-purge mode such as CAL. Purge
cycles should never be terminated by turning off the purge supply air while in the purge
position.

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2.3.6.4

NetScanner™ System (9016, 9021, & 9022) User’s Manual

LEAK Mode Inputs

The purge/leak charge valve design includes a leak check feature capable of testing the integrity of
user pneumatic connections as well as those within the 9016 module. For the leak mode to be used,
all RUN mode pressure inputs must be dead ended (closed) by the user. When the 9016 is
commanded into the LEAK-CHARGE position, the CAL input port will be pneumatically
connected to module run side inputs. Common reference modules will connect only the numbered
run side inputs to CAL (RUN REF is not charged). True differential (reference per port) modules
will connect both the measurement input and reference port to CAL. While in the LEAKCHARGE position, a test pressure may be applied through the CAL port which will charge the dead
ended run side tubulation.
Test pressures applied to the CAL port during the leak check
operation must not exceed the full scale pressure of any internal
transducers.

Once the lines are charged, the 9016 may be commanded back to the RUN position. This will
reattach the charged run side lines to their corresponding internal transducer. Consecutive pressure
readings from the 9016 will now allow user calculation of the line leak rates. Once returned to the
RUN position, lack of a pressure indicates a gross leak. A slowly declining pressure indicates a
slight leak. A leak is more difficult to detect as tubing volume increases. In the case of true
differential units where both sides of the sensor are pressurized with the leak test pressure, an initial
differential pressure of 0.0 psi should be measured when the unit is placed in the RUN position. If
the measurement or RUN side of the channel leaks at a rate greater than the reference side, a
resulting negative differential pressure will be measured. Likewise, if the reference port tubing leaks
at a rate greater than the measurement side, a resulting positive differential pressure will be
measured.
2.3.6.5

Supply Air

The 9016 models require a 80 psig minimum dry air (or inert gas) supply which is used to shift the
internal calibration valve between its different positions. Each module contains a fitting marked
“SUPPLY” for this input. Internal solenoid valves direct this supply pressure to the proper control
port on the calibration valve as required by instrument commands. The absence of sufficient supply
air to the module will prevent the calibration valve from shifting into requested positions (i.e., RUN,
CAL, PURGE, LEAK-CHARGE).

WARNING! Supply air should not exceed 125 psi (875 kPa).
Excessive pressure may damage the internal solenoids.

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2.3.7

NetScanner™ System (9016, 9021, & 9022) User’s Manual

9021 and 9022 Transducer Installation

Models 9021 and 9022 interface to twelve external transducers or signal sources. Although this
module is intended primarily for use with the Pressure Systems Model 9400, 9401, and 9402 AllMedia Transducers, it may also be used with many third party transducers with suitable analog
outputs. When using the 9022 with third party pressure sensors that lack a temperature output
signal, you must short the temperature signal input (pin D of the circular connector) to its
reference line (pin C of the circular connector). This may be done directly on the connector.
Transducers should be installed to the 9021/9022 as described on the following pages.
Warning: Always ensure that the Model 9021/9022 power is OFF before
connecting or disconnecting external transducers.

The 12 volt transducer supply line is fuse-protected. The 9021 modules have a green LED at the
bottom center of the case, indicating the presence of 12 volt power to the external transducers.
The indicator LED is not present on the 9022.
2.3.7.1

Installation of 9400, 9401 and 9402 Transducers

Warning: Improper electrical connections between the Model 9021/9022 and
external transducers can result in permanent damage to the scanner and the
external transducer.

9400, 9401, and 9402 transducer cables are typically ordered from Pressure Systems pre-wired
for use with the 9021/9022. If it is necessary to fabricate interface cables to interface the Series
9400 transducer to the 9021, the diagram in Figure 2.4 should be used. The 9021 makes use of
9-pin D-shell mating connectors. The 9022 uses circular (military) style connectors. See Figure
2.4a. Additional wiring diagrams can be found in Appendix C.

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Figure 2.4
9021 Transducer Wiring
2.3.7.2

NetScanner™ System (9016, 9021, & 9022) User’s Manual

Figure 2.4a
9022 Transducer Wiring

Installation of All Other Transducers

If other analog output transducers are used with the 9021 they must provide an analog output less
than the 9021 maximum input range of ±5 VDC. These transducers can be interfaced to the 9021
as shown in Figure 2.4. When using external transducers, both the 9021 and 9022 modules
provide a +12VDC unregulated supply voltage to power the transducer.
The 9022 has a jumper (JB1) on the PC-317 board for selecting the precision 5 or 10 VDC
excitation source. See Figure 2.5. JB1 is a three-pin jumper. When the two pins closest to the
edge of the board are connected (pins 2 and 3), the configuration is set for 10 VDC excitation.
When the center and the innermost pins are connected (pins 1 and 2), the configuration is set for 5
VDC excitation.

Please refer to Section 5.12 for module disassembly instructions if changes to the
excitation voltage are needed.

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Figure 2.5
9022 Jumper (JB1) Set For 10 VDC Excitation
NOTE:

2.3.8

The factory default setting for jumper JB1 is 10 VDC

Case Grounding

The 9016 and 9021/9022 modules contain a case bypass capacitor which allows the module case
to be mounted on hardware with a small common mode line voltage (less than 20 Volts).

2.3.9

Trigger Input Signal

Models 9016, 9021, and 9022 each support the use of a data acquisition synchronization signal,
sometimes called “Hardware Trigger.” When configured through the Define/Control Host
Stream (‘c’) command, the trigger signal can be used to initiate and synchronize data acquisition
and stream outputs to the host.
The trigger signal is intended to be a 2-wire differential signal brought in through the 9016, 9021,
or 9022 main electrical connector. The signal may be driven by a standard TTL compatible
device. The switching threshold for this signal is set at 2.5 VDC.

2.3.10

Power Up Checks and Self-Diagnostics

Upon power-up of the module, the internal firmware will perform a number of self-diagnostic
checks. The results of these tests are reflected by the ‘OK’ LED on the top panel. The 9016 ,
9021, and 9022 modules complete the power up and self diagnostics in approximately 30 seconds.
See Chapter 6, Troubleshooting Guide for additional information and potential problem areas
during the power-up sequence.
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Chapter 3
Programming and Operation
3.1

Commands & Responses

3.1.1

Introduction

This chapter describes all commands a host computer program may send to a NetScanner™ System
Intelligent Pressure Scanner module, as well as the data or status responses returned by the module.
Most applications require a working knowledge of only a small number of these commands. Most
commands apply to all pressure scanner models. However, some apply only to specific models as
will be noted in the command description (e.g., Model 9016 or Model 9022).
Models 9016, 9021, and 9022 (stand alone scanner modules), have an Ethernet interface, and use
layered TCP/IP or UDP/IP transmission protocols to communicate with a host computer. All
commands/responses to/from NetScanner™ System modules are embedded in the data fields of
either a TCP or UDP packet header. In turn, these packets are themselves embedded in the data field
of an IP packet header, which is embedded in the data field of an Ethernet packet header. Thus, the
term layered protocols.
3.1.1.1 TCP/UDP/IP Protocols
Both TCP/IP and UDP/IP protocols are a well-established set of rules for communicating over a
network (LAN, intranet, or internet), and are independent of the network’s physical medium. All
the modules use the TCP/IP protocols for most commands and responses since the TCP layer
provides a robust error detection and correction mechanism. TCP/IP requires a formal connection
be established between host and module. The simpler UDP layer, requiring no formal connection,
is utilized for a subset of commands and query responses.
Using the underlying basic IP protocol, the host computer and interconnected modules are all “peers”
that can communicate equally. Each “peer” must have its own unique “logical” IP Address (as well
as its own unique “physical” Ethernet Address) to be directly addressed. Any “peer” may initiate
transmissions without permission from the receiver. In the NetScanner™ System implementation,
the host computer is normally a client and generally initiates most transmissions by sending
commands to the modules, which are normally servers. However, a module can initiate its own
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transmissions in some operating modes (e.g., the hardware-triggered or free-run autonomous host
streams generated by the Configure/Control Autonomous Host Streams (‘c’) command).
A “peer” may be directly addressed by its IP address (in xxx.xxx.xxx.xxx format), or by use of a
predefined logical name that allows its IP Address to be looked-up in the sender’s database or in a
central network server’s database. The Windows® 95/98/2000/NT operating systems provide a
simple text file database called “Hosts.” Review the file “Hosts.sam” in the “C:\windows” directory.
Modify and rename it “Hosts.” (no file extension) to activate it.

Before the host computer and any module can communicate with the higher level TCP/IP protocols,
the host (client) must request a connection be established with the module (server). Each module
expects all such requests for connection to be requested by its IP Address, and directed to “wellknown” port 9000 (default). After the connection is made, a socket is established as a logical handle
to this connection. The host and module may then communicate, via this socket, until it is closed
or is lost at either module or host end, due to power failure or reboot). The host and module may also
communicate in a limited fashion without a connection, using the middle-level UDP/IP protocols.
In that case, the host simply broadcasts commands via port 7000, and each module (that chooses to
respond) returns the response on port 7001. Only a few commands use UDP/IP in NetScanner™
System modules.

3.1.2

Commands

The commands (and responses) used by Models 9016, 9021, and 9022 modules consist of short
strings of ASCII characters. The TCP/IP and UDP/IP protocols allow for the transfer of either
printable ASCII characters or binary data. When using certain formats, internal binary data values
are often converted to ASCII-hex digit strings externally. Such values may include the ASCII
number characters ‘0’ through ‘9,’ the uppercase ASCII characters ‘A’ through ‘F,’ and the
lowercase letters ‘a’ through ‘f’.’ These hex values may represent bit maps of individual options, or
actual integer or floating point (IEEE) binary data values. In other cases (see optional format 7
below) binary data may be transmitted directly as 4-byte (32-bit) binary values without any
formatting change. Such binary transmissions use big-endian (default) byte ordering but may be
commanded to use little-endian for some data.
3.1.2.1 General Command Format
A typical TCP/IP command (contained in the data field following a TCP packet header) is a variablelength character string with the following general fields:
!
a 1-character command letter (c).
!
an optional position field (pppp), a variable length string of hexadecimal digits.
!
a variable number of optional datum fields ( dddd): each a variable length string, normally
formatted as a decimal number (with a leading space character, and with or without sign
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and/or decimal point, as needed).
Using brackets ( [ ] ) to show optional elements, and ellipsis ( ...) to show indefinite repetition, a
typical TCP/IP command may be viewed schematically as follows:
“c[[[[p]p]p]p][ dddd][ dddd]...]”
From this schematic, it should be clear that the command letter (c) is required, the position field
(pppp) immediately follows it, and may have 0, 1, 2, 3, or 4 characters, and there may be zero or
more datum fields ( dddd), as required. For simplicity, the variable length nature of each “ dddd”
string is not shown [with brackets] above, but the required leading space character is shown. The
position field is similarly simplified (as “pppp”) below.
A typical UDP/IP command (contained in the data field following a UDP packet header) is also a
variable length character string, but has a simpler format. Generally, it has a variable length
command string (cccccc), followed by one optional datum ( dddd) field (preceded by one space
character):
“cccccc[ dddd]”
Since there are only a few simple UDP/IP commands, all references to commands below should
assume TCP/IP commands, unless otherwise indicated.
3.1.2.2 Command Field
All NetScanner™ System modules recognize a set of predefined commands. Most are TCP/IP
commands, having only a single alphabetic letter for a command field. These are recognized only
when a formal socket connection is established with the host computer. A few are UDP/IP
commands with a longer command field. These are recognized any time the module has power
applied. All commands are functionally summarized in the following sections and detailed in
reference Section 3.2.
3.1.2.3 Position Field
The Model 9016 Intelligent Pressure Scanner may contain up to sixteen (16) separate input/output
channels, whereas the Models 9021 and 9022 have only twelve (12) channels. When commands
affect certain channels scanned by the module, the position field is used to identify those channels
as bits in a bit map. If a channel’s corresponding bit in the position field is set to a one (1), then that

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channel is affected by the command. The least-significant (rightmost) bit 0 corresponds to Channel
1, and the most-significant (leftmost) bit 15 corresponds to Channel 16. Since neither model has
more than sixteen (16) channels, the position field will usually be 16-bits, represented by four (4)
ASCII-hex characters in the command. For example, only Channels 16 and 1 are selected below in
this 16-bit (4-character) position field:

Bit#

Chan#

Binary

Hex

The above position field, with all applicable bits set (i.e., FFFF for 16-channel module), specifies
all channels. However, a module-independent variation allows a missing position field to designate
all channels — but only when there are no other parameters following the position field in the
command. For such commands, the hex position field may be reduced to 3, 2, or 1 characters when
no channel bits need be set (1) in the discarded high-order characters (nibbles).
The channel data requested will always be returned in order of
highest requested channel to lowest requested channel.

3.1.2.4 Datum Fields
Any datum fields in a command generally contain data to be sent to the module, usually specified
by a position field bit map. In some commands (when data are received from a module instead) no
datum fields are required in the command itself but the position field bit map is still used to specify
the order that data are returned in the command’s response. In either case, the order bits are set (to
1) in the position field bit map (highest channel # to lowest channel#, left to right) is the order these
datum fields are received or sent.
Each datum field may be variable in length, whether part of the command itself or the command’s
response. In its most common format, a datum begins with a space character (‘ ’), and is followed
by an optional sign, decimal digits, and a decimal point, as needed (e.g., ‘ -vv.vvvvvv’). For other
formats it may be a hex digit string or pure binary number.

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3.1.2.5 Format Field
Some commands, that either send data to a module (as command parameters), or cause the host to
receive data (via command’s response), have an extra format parameter (f digit) appended to (or
specified in) the position field. This parameter, when specified (or implied by default), governs how
internal data are converted to/from external (user-visible) form.
!

The most common format (f=0) causes each datum (in command or response) to be
represented as printable ASCII numbers externally (with optional sign and decimal point as
needed). Internally, the module sets/obtains each converted datum to/from a single precision
binary (32-bit) IEEE float.

Some formats (f=1, 2, 5) encode/decode the internal binary format to/from ASCII
hexadecimal external form. Some of these “hex dump” formats provide an external hex bit
map of the internal binary value (float or integer as appropriate). Format 5 may
encode/decode the internal float value to/from an intermediate scaled binary integer (e.g.,
float value * 1000 into integer, then to/from a hex bit map).

Two special “binary dump” formats (f=7 and f=8) may be used by some commands to
accept/return binary data directly from/to the user’s command/response. Such values are not
user-readable in their external form, but are directly machine readable and provide highly
compact storage without any accuracy loss due to formatting. Use of these formats allows
both the module and host program to operate in their most efficient, low overhead mode.
Format 7 returns the most significant byte first (i.e., big endian). Format 8 returns the least
significant byte first (i.e., little endian).

See the individual command descriptions for the formats a particular command recognizes.

3.1.3

Responses

Four (4) types of responses can be returned from a NetScanner™ System Intelligent Pressure
Scanner module:
!
an Error response,
!
an Acknowledge response,
!
an Acknowledge with Data response, or
!
a Network Query response.
The first three may be returned by TCP/IP commands, the latter from a UDP/IP command.

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The error response consists of the letter ‘N’ (for NAK, or negative acknowledge), followed by a 2digit hexadecimal error code. The following table lists the error codes that can be returned from a
NetScanner™ System module:
Table 3.1
Error Codes
CODE

MEANING

(Unused)

Undefined Command Received

Unused by T CP/IP

Input Buffer Overrun

Invalid ASCII Character Received

Data Field Error

Unused by T CP/IP

Specified Limits Invalid

NetScanner error: invalid parameter

Insufficient source air to shift calibration valve

Calibration valve not in requested position

The Acknowledge response is returned from a module when a command is received that requires no
data to be returned, and no error is detected. It indicates successful parsing and execution of the last
received command. It consists of the letter ‘A’ (for ACK, or acknowledge).
The Acknowledge with Data response is returned when a module receives a command requesting
data. NetScanner™ System modules will typically return only the requested data values, each
preceded by a space character (except for format 7). No ‘A’ acknowledge letter begins this data
response. Data are returned for the highest requested channel number first.
3.1.3.1 Interpreting Offset Values (Re-zero Calibration Adjustment)
When a module is instructed to execute the command Calculate and Set Offsets (‘h’), a datum
corresponding to the calculated offset correction term (or coefficient) is returned for each affected
channel. Each such coefficient value is stored internally, and will be subtracted in all subsequently
calculated data conversions, to correct for zero drift effects. The command only returns them in the
response (in current engineering units (EU) of pressure) to allow the user to make reasonableness
checks on them. The Read Internal Coefficients (‘u’) command will return them on demand.
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3.1.3.2 Interpreting Gain Values (Span Calibration Adjustment)
When a module is instructed to execute the command Calculate and Set Gains (‘Z’), a datum
corresponding to the calculated gain correction term (or coefficient) is returned for each affected
channel. Like the offset coefficient, each gain coefficient is stored internally, and will be used in
all subsequently calculated data conversions, to correct for gain change effects. The command
returns them in the response (as a unitless scale factor near 1.0) to allow the user to make
reasonableness checks on them. The Read Internal Coefficients (‘u’) command will return them on
demand.
3.1.3.3

Interpreting Engineering Units Output

All modules perform all internal pressure calculations in engineering units of pounds per square inch
(psi). By default, all pressure data in responses and command parameters will also be in psi. A
different engineering unit (e.g., kPa) may be obtained by changing an internal EU Pressure
Conversion Scaler (normally 1.0). See the “Read/Download Internal Coefficients” (‘u’/‘v’)
commands (array 11, coefficient 01). Change this default multiplier value (1.0) to obtain units other
than psi.

3.1.4 Functional Command Overview
The various commands for 9016, 9021, and 9022 modules are best introduced by classifying them
into functional groups and then describing how each function is carried out in a typical system. The
following functions are defined for this purpose:
!
Start-up Initialization
!
Scan List Definition for Acquisition
!
Calibration Adjustment of Engineering Unit Correction Coefficients
!
Acquisition/Delivery of Data to Host
!
Network Query and Control
Please look ahead to Table 3.1, labeled NetScanner™ Commands, in Section 3.2, for a quick-look
summary of all commands available to the Models 9016, 9021, and 9022 modules. Each command
may be referenced by both its functional title and by its command id in the functional discussion subsections below.
The Detailed Command Description Reference immediately follows the table in Section 3.2, with
each command description occupying a page (or more if necessary). Command descriptions in this
section (as in the table) are ordered first by type (TCP/IP then UDP/IP), then by “command id” in
ASCII order (UPPERCASE letters (A .. Z) first, then lowercase letters (a .. z)) .

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3.1.4.1 Startup Initialization
Since power supplies may be distributed widely across a network of modules and host computer(s),
it is not uncommon for modules (singly or together) and the host to lose power independently.
Thus, their power may be restored at different times. Startup initialization, for every module, must
normally be performed when its power is restored, as each module enters default states after powerup, which may not be the state the host computer had previously been operating in. Any previous
TCP/IP socket connection is also lost after power failure and must be re-established between host
and module before any TCP/IP commands can be recognized by the module. These commands are
generally used to detect that startup initialization has occurred (or to force reset at other times), after
which other commands may be used to restore the original operating condition.
With NetScanner ™ System modules, the Power-Up Clear (‘A’) command is used as a simple
command to elicit a known response from a module. Although this causes no internal function
within the module, it will result in an acknowledgment being returned to the host computer to verify
proper communications. The best way to detect that a power reset has occurred in a module is to
notice that the TCP/IP socket connection is no longer valid. At any point during module operation,
the Reset (‘B’) command may be used to return any module to its default “reset” state. If the
module is then required to enter any other states (that were previously programmed for it by the
host), the host must then restore these states accordingly using the appropriate commands. This
reset command simply returns internal software parameters to a default state (as after power up or
reboot). It will not close the existing TCP/IP socket (as will power up or reboot).
The Set/Do Operating Options/Functions (‘w’) command has many purposes, but may first be
utilized during the module initialization stage. It may also be executed at any time during data
acquisition. However, some non-factory-default options of ‘w’ may become the new reset default,
if a particular function is used to establish them in non-volatile memory.
If any form of the Configure/Control Autonomous Host Streams (‘c’) command or the
Configure/Control Multi-Point Calibration (‘C’) command was in use before reset, it must be
executed again after the reset to restore it. Any other command, that establishes the module in a
non-default reset state, must be re-executed after a reset, if processing is to continue in that state.
The Network Query (“psi9000”) UDP/IP command may be used (at any time) to make each
module on the network identify itself to the host(s). A parameter, returned in each module’s
response, indicates whether or not a module still has a valid connection. This is a useful way to
detect if an overt reset occurs in a module. The module may be configured to emit this response
automatically after any reset (power on or reboot).

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3.1.4.2 Module Data Acquisition
After power-up, all modules will begin to scan all attached transducer channels in channel number
order. Scanning will occur at the module’s maximum internal rate (using the previously stored
number of data averages per channel). The data are stored in an internal buffer, available for
retrieval by the host computer. Engineering units conversion of the scanned channels is
accomplished using thermal correction data extracted from each transducer at power-up. While
scanning, the module will automatically monitor the attached transducer’s temperature, correcting
engineering unit output for any temperature effects.
All modules effectively defer the host computer’s decision of “which channels of data do I want”
until that time when the host chooses to send read commands to actually retrieve the desired data
from the latest “buffered copy” of the continuously scanned, averaged, and engineering-unitconverted data.
See Section 3.1.4.4 (Delivery of Acquired Data to Host) for more information.
While scanning, all modules take multiple samples and average each channel. The number of
samples per scanned channel defaults to 8, but may be set to one (to disable averaging) or to any
power of 2 (1, 2, 4, 8, 16, 32) to change the degree of averaging (and its effect on maximum scan
rate). The Set Operating Options (‘w’) command may change this variable at any time.
3.1.4.3 Calibration Adjustment of Offset/Gain Correction Coefficients
All NetScanner™ System Intelligent Pressure Scanners have built in software commands (and
pneumatic hardware) to perform a periodic zero and span calibration adjustment of attached
pressure transducers. Use of these periodic adjustments result in the highest possible data accuracy.
The result of these calibrations are a new set of internal offset and gain coefficients. These
correction coefficients are over and above those factory-determined and unchanging thermal
correction coefficients stored in each transducer's non-volatile memory. The factory coefficients
provide the basic engineering unit conversion capability, while also correcting for various nonlinear effects, including temperature effect compensation. The offset and gain correction
coefficients provide for fine linear fit adjustment of the factory calibration of each transducer. If
used properly, the periodic zero and span calibration adjustment should be the only
calibration required to maintain specified performance through the life of the Intelligent
Pressure Scanner.
It is generally necessary for the transducer to have real zero and span pressure (specified as 2 or
more values) applied when calibration adjustment is required. These pressure values may be
generated by secondary pressure standards, such as the model 903x calibrator module or by other
external means provided by the customer (such as a dead weight calibrator). For the more common
zero-only calibration adjustment, zero differential pressures can typically be provided without the
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need for external pressure generators. All 9016 models have built-in pneumatic inputs (CAL side
inputs) and calibration manifolds required for directing the generated pressures to the various
channels of the module(s) being calibrated. Models 9021 and 9022 require such pneumatic/
hydraulic plumbing be provided by the customer (if deemed necessary). Refer to Chapter 4 of this
manual for detailed background and procedures for periodic calibration of the Intelligent
Pressure Scanners. A summary of the commands used for calibration purposes is included below.
The Calculate and Set Offsets (‘h’) command is executed only when a suitable “minimum” (e.g.,
zero) pressure has been applied to all channels of the module. The new offset coefficients that
result from execution of this command are stored in the module’s volatile (or temporary)
engineering-unit conversion database. They are also returned to the host in the command’s
response.
The Calculate and Set Gains (‘Z’) command should be executed only when “full-scale” (or other
suitable specified up-scale) pressure has been applied to the appropriate channels of a module. The
new gain coefficients that result from this command are stored in the module’s volatile (or
temporary) engineering-unit conversion database. They are also returned to the host in the
command’s response.
In modules using firmware version 2.24 or later, a Configure/Control Multi-Point Calibration
(‘C’) command is provided. This command (actually 4 sub-commands) is an improvement over
the single calibration commands (‘h’ and ‘Z’) described above. Though ‘C’ provides for the
adjustment of the same offset and gain correction coefficients already described above, it does so
with two or more applied pressure calibration points. The final linear fit (i.e., new offset and gain
correction coefficients) is a “least squares” correction fit between all the calibration points specified.
This ‘C’ command is particularly useful in calibrating differential transducers over their entire
negative-to-positive range.
Although the calculated offset and gain correction coefficients are kept in volatile memory
following execution of the calibration commands, they may be stored in non-volatile transducer
memory following the execution of the calibration commands (for use by all subsequent EU
conversions).
This is accomplished with the Set/Do Operating Options (‘w’) command (Index 08 and 09).
The above correction coefficients are maintained internally in IEEE floating-point format. The Read
Internal Coefficients (‘u’) command and the Download Internal Coefficients (‘v’) command can
return (or manually set) calibration coefficients to the host in decimal or hex dump formats in their
responses.

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3.1.4.4 Delivery of Acquired Data To Host
Several commands apply to host delivery of acquired data, either on demand or autonomously. The
Read High Precision Data (‘r’) command may be used to obtain high precision data (selected
channels in various formats). The modules also provide several high speed, high resolution output
commands. The Read High-Speed Data (‘b’) command is used to read “pure binary” engineering
unit pressure (all channels in the lowest overhead format). Use the ‘r’ and ‘b’ commands to get
acquired data on demand.
The module can also deliver EU pressure data in streams, which consist of TCP/IP or UDP/IP data
packets that arrive autonomously in the host (with data from selected channels being delivered in
various formats at various rates). Up to three independent streams may be configured, started,
stopped, and cleared with the Define/Control Autonomous Host Streams (‘c’) command. In
conjunction with hardware triggering, this autonomous delivery method can also make the module
acquire (as well as deliver) data in its most efficient and time-synchronized manner. This also frees
the host to receive, process, or record these data in its most efficient manner, since it need not waste
time continually requesting new data with commands.
The modules also have special purpose on demand data acquisition commands, including: Read
Transducer Voltages (‘V’) and Read Transducer Raw A/D Counts (‘a’), which provide two views
of raw pressure data. It has similar commands providing EU temperature (°C) and other raw views
of each channel’s special temperature signal, including Read Transducer Temperatures (‘t’), Read
Temperature A/D Counts (‘m’), and Read Temperature Voltages (‘n’). This command group is
generally used for diagnostic purposes. All of these special purpose data (plus other module status
information) may also be periodically delivered to the host automatically in any of the three flexible
autonomous streams configured by the ‘c’ command.
3.1.4.5 Network Query and Control Functions
A special subset of three (3) UDP/IP commands may be sent to a module at any time power is
applied to it (i.e., neither a host socket connection nor a unique IP Address assignment is required).
Each such command is broadcast to all modules (i.e., sent to IP Address 255.255.255.255) via Port
7000, and any module wishing to respond will return a UDP/IP broadcast response via Port 7001.
Only one of these commands returns a response. This is the Network Query (“psi9000”)
command. The others cause the module to be re-booted, therefore no response is possible. One
command changes the way the module gets its IP address assignment (i.e., dynamically from a
server or statically from factory-set internal data).

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3.1.4.6 Other Functions
Some commands may be used at any time to obtain information about the internal setup and status
of a module. The Read Module Status (‘q’) command is an example. Also, the Set/Do Operating
Options (‘w’) command, though generally used after power-up reset, may also be used at other
times to change system operation. The actual feedback position status of internal valves, and several
temperature status conditions may be configured to be periodically delivered to the host
automatically in any of the three autonomous streams configured by the ‘c’ command.

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3.2 Detailed Command Description Reference
All commands applicable to the various models of the NetScanner™ System Intelligent Pressure
Scanner modules are described on the following pages. They are summarized in the following
table. For convenience, this table is also repeated in Appendix B.
Table 3.2
Intelligent Pressure Scanner Commands

Type

Command id

TCP/IP

Power-Up Clear

Reset

Configure/Control Multi-Point Calibration (4
sub-commands)

Read Transducer Voltages

Calculate and Set Gains (Span Cal)

Read Transducer Raw A/D Counts

Acquire High Speed Data

Define/Control Autonomous Host Streams (6
sub-commands)

Calculate and Set Offsets (Re-zero Cal)

Read Temperature A/D Counts

Read Temperature Voltage

Read Module Status

Read High Precision Data

Read Transducer Temperature

Read Internal Coefficients

Download Internal Coefficients

Set/Do Operating Options/Functions

UDP/IP
Broadcast

psi9000
psireboot
psirarp

Command Function

Query Network
Reboot Specified Module
Change Specified Module’s IP Address
Resolution Method (then Reboot)

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POWER UP CLEAR (Command ‘A’)
Purpose:

Command

This command has no internal module affect. It is used as a simple method to verify
proper communications to the NetScanner™ System module.
“A”
‘A’ is the command letter.

Response

“A”
‘A’ is the acknowledge letter.

Description:

This command is generally used as a simple ‘NOP’ mechanism to verify proper
communications with a module.

Example:
!

Send TCP/IP command to a module (via its open socket) to acknowledge module
power on:
“A”
Read following response:
“A”

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RESET (Command ‘B’)
Purpose:

Command

Instructs the module to reset internal operating parameters, and to set all internal
control variables to their default “reset” state (see description below). The current
TCP/IP socket connection will remain open. Execution after a power off/on cycle
is optional (unnecessary).
“B”
‘B’ is the command letter.

Response

“A”
‘A’ is the acknowledge letter.

Description: The module returns to the following “reset” states if this command is executed:
!
Re-zero correction (offset) terms are set to the last values stored in
transducer memory.
!
Span correction (gain) terms are set to the last values stored in
transducer memory.
!
Calibration Valve is set to the RUN Position (9016 only).
!
Number of Samples for Data Averaging is set to last value stored in
non-volatile memory (factory default = 8).
!
Any autonomous host data delivery streams defined by ‘c’ subcommands are reset (undefined).
!
The Multi-Point Calibration function defined by ‘C’ sub-commands
is reset (undefined) if in progress.
Example:
!

Send TCP/IP command to a module (via open socket) to reset defaults:
“B”
Read following response:
“A”

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CONFIGURE/CONTROL MULTI-POINT CALIBRATION (Command ‘C’)
Purpose:

This command is actually four (4) sub-commands. The first configures and starts
a Multi-Point Calibration adjustment function for selected channels in the module.
Another is repeated multiple times to collect data for each defined calibration point.
Another ends the calibration function normally by calculating new offset and gain
adjustment coefficients from the collected data. It then returns the module to its
normal state, but with improved accuracy. A final sub-command is used only if it
becomes necessary to abort the calibration function while in progress. The general
form of all sub-commands is described in the table below. Subsequent pages
separately describe each individual sub-command and give examples of each.
This ‘C’ command (with sub-commands) is available only in
modules that have upgraded to firmware Version 2.24 or later.

Command

“C ii[ dddd]... ”
‘C’ is the command letter.
‘ ii’ is a required sub-command index preceded by a space character.
‘ dddd’ are zero or more optional datum (or parameter) fields, each preceded
by a space character. These vary with the sub-command used.

Response

Depends upon the particular sub-command (ii) used.

Description: The four ‘C’ sub-commands configure and control operation of a Multi-Point
Calibration function that is similar to the simpler re-zero and span calibration
adjustment functions (see separate ‘h’ and ‘Z’ commands). However, ‘C’ adjusts
both the offset and gain correction coefficients of each affected transducer at the
same time, using two or more calibration points. Thus, instead of simply
calculating a new linear (i.e., straight line) adjustment function that passes through
the supplied zero and span calibration points, it calculates a best-fit straight line,
using the least squares method, that comes “as close as possible” to all the
supplied calibration points. This correction method provides the very best
adjustment throughout the entire range (negative to positive) of a differential
transducer.
NOTE: Avoid confusing this Calibrate command ‘C’ (upper case C) with the
Configure/Control Autonomous Host Streams command ‘c’ (lower case c).
Like “c,”
but unlike most other module commands, all sub-commands of this command require a
space between the command id (‘C’) and the first parameter (ii).
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Command ‘C’— Sub-command Index 00: Configure & Start Multi-Point Calibration
This sub-command has four (4) additional required parameters used to configure and start the
Multi-Point Calibration function.
Command

“C 00 pppp npts ord avg”
‘C’ is the command letter.
‘ 00’ is the sub-command index (ii) for Configure & Start.
‘ pppp’ is a 1-4 hex digit position field (channel selection bit map), that
selects any of the 1-16 (9016) or 1-12 (9021/9022) internal channels to be
affected by the multi-point calibration.
‘ npts’ is the number of unique calibration points (between 1 and 19) to be
supplied during the calibration function.
‘ ord’ is the order of the adjustment fit, which currently must be 1 for a 1st
order linear fit of the calibration data (i.e., a straight line).
‘ avg’ is the number of A/D data samples collected and averaged for each
calibration point supplied (must be a power of 2 in the set 2, 4, 8, 16, or 32)
NOTE: all parameters are separated by a space.

Response

“A”
‘A’ is the acknowledge letter and is returned if all parameters are supplied
with reasonable values. Else, an error (‘N’) response is returned.

Description: Configures and starts the Multi-Point Calibration function. It specifies the
particular channels (pppp) whose offset and span adjustment coefficients will be
replaced when the function is completed. All specified channels must have the
same full-scale pressure range. Modules with more than one range of internal
transducers installed must have channels from each range calibrated separately.
This sub-command immediately alters the module’s normal data acquisition,
processes A/D samples for average count (default = 8, or as per the ‘w10dd’
command), and uses the sub-command’s avg parameter sample count instead. A
larger count (e.g., 32) is encouraged for calibration purposes. The original sample
count will not be restored until the calibration function ends or is aborted (per other
sub-commands described on the following pages).

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The npts parameter fixes how many calibration points must be supplied when the
Multi-Point Calibration function’s data collection phase starts later with multiple
invocations of another sub-command (described below). Currently, only a linear (1st
order) (‘ ord=1’) fit of the calibration points is available.
Example:
!

Configure and start the Multi-Point Calibration function so that it affects only the
first four (4) channels of the module. Three (3) pressure calibration points will by
supplied when we continue this function later (see example for ‘01’ sub-command
below). A linear (1st order) fit will be used to obtain a new set of offset and gain
correction coefficients for these four (4) channels. The maximum average sample
count (32) is used to collect each calibration data point, so as to minimize any noise
in the data samples. The module’s data acquisition process is altered immediately
to collect the increased number of averages.
“C 00 F 3 1 32”
Read response:
“A”

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Command ‘C’— Sub-command Index 01: Collect Data for a Calibration Point
This sub-command has two (2) additional required parameters.
Command

“C 01 pnt pppp.pppp”
‘C’ is the command letter.
‘ 01’ is the sub-command index (ii) for Collect Data
‘ pnt’ identifies a particular calibration point that will be supplied. It
must be between 1 and npts, where npts was a parameter of the previously
executed Configure & Start (‘00’) sub-command.
‘ pppp.pppp’ is the pressure value (in current EU) that is actually applied
currently to the module’s transducers by a precision calibrator.
NOTE: all parameters are separated by a space.

Response

“pppp.pppp [pppp.pppp]...”
The actual measured pressure values (in current EU) from each affected
channel of the module (highest numbered specified channel first, lowest
numbered specified channel last, as per the pppp bit map parameter of the
Configure & Start (‘00’) sub-command. The decimal response datum
format (format 0) is always used.

Description: This sub-command (to be executed two or more times) carries out the data
collection phase of the Multi-Point Calibration function for exactly one (1)
calibration point (i.e., per parameter pnt). Each execution applies a specified
pressure value; then collects, averages, and stores the data for that calibration point.
It must be repeated until all pressure points, as specified by the npts parameter of the
original Configure & Start (‘00’) sub-command, are applied and their data collected.
For each particular point, enter the sub-command after that point’s pressure value
has been properly applied to the module, and that value is stable (unchanging).
Pressure may be applied to either the Cal or Run ports, as necessary. Use a Model
903x Calibrator or some other suitable precision pressure source to generate the
pressure.

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It is not necessary to enter the two or more calibration points in strict numerical
order (i.e., 1, 2, ... npts). Any convenient entry order is allowed, though each
point’s actual pressure value must be correctly stated (with the pppp.pppp
parameter) when executed. Previously entered points may be reentered if it is
necessary to account for hysteresis. However, all the points specified by the npts
parameter of the Configure & Start (‘00’) sub-command must be supplied before the
final Calculate and Apply (‘02’) sub-command can be executed, else an error will
result.
Example:
!

Supply each of the previously-specified three (3) pressure calibration points to the
Multi-Point Calibration function, as was stated in the previous example of the
Configure and Start (‘00’) sub-command. Assume that all the affected four (4)
channels have differential transducers with the same -5 to +5 psi range. Include at
least one pressure point in the negative range of these transducers.
“C 01 1 -2.5”
“C 01 2 0.0”
“C 01 3 5.0”
Read responses (separately after each command executed above):
“-2.4998 -2.4999 -2.5001 -2.500”
“0.0 0.0013 -0.0133 -0.00001”
“5.0091 4.9992 5.0010 4.9998”
Data are returned in reverse channel number order (i.e., 4, 3, 2, 1) in each response.

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Command ‘C’— Sub-command Index 02: Calculate & Apply Correction Coefficients
This sub-command has no additional parameters.
Command

“C 02”
‘C’ is the command letter.
‘ 02’ is the sub-command index (ii) for Calculate & Apply
NOTE: all parameters are separated by a space.

Response

“A”
‘A’ is the acknowledge letter — returned if the required number of
calibration data points had their data successfully collected previously,
and the resulting calculated data is reasonable. Else, an error (‘N’)
response is returned.

Description: This sub-command finishes the Multi-Point Calibration function, previously
started by the Configure & Start (‘00’) sub-command. It calculates new correction
coefficients using the pressure data collected by all required executions of the
Collect Data (‘01’) sub-command.
All the averaged data points collected previously are checked for reasonableness,
and then a new set of zero and gain correction coefficients are calculated by the
least-squares method for each channel (transducer) affected by the calibration.
These are stored in the module’s volatile memory for use by all subsequent EU data
conversion of these channels until the module is reset or powered off. These
coefficients may be stored in the non-volatile memory of the module’s transducers
with the ‘w’ command (see indexes 08 and 09 for that command). The latest
calculated zero and gain coefficients may be inspected with the ‘u’ command at any
time for any channel.
Finally, this sub-command restores the original “A/D samples for averaging” count
used by the module’s data acquisition process to the value that was in use before the
Multi-Point Calibration function was originally started.

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Example:
!

Finish the Multi-Point Calibration function previously started (as indicated by the
previous examples of ‘C’ sub-commands ‘00’ and ‘01’). Calculate new adjustment
coefficients, and save them in the non-volatile memory of the module’s transducers.
These new coefficients will then be used for all subsequently calculated EU data
acquired by the module, until another calibration function is performed in the future.
“C 02”
“w08”
“w09”
Read responses (separately for each command executed above):
“A”
“A”
“A”
If an error (“N”) response is returned on the first command, either the correct
number of calibration points (per ‘00’ sub-command) were not supplied with
reasonable pressure data values (via the multiple ‘01’ sub-commands), or the
collected data yielded new calculated coefficients with unreasonable values. In that
case, the other two commands should not be used.
If execution of the last two ‘w’ commands is skipped above, the new calibration
data obtained will be stored only in volatile storage, and will be available for use
only until the module is RESET or loses power.

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Command ‘C’— Sub-command Index 03: Abort Multi-Point Calibration
This sub-command has no additional parameters.
Command

“C 03”
‘C’ is the command letter.
‘ 03’ is the sub-command index (ii) for Abort.
NOTE: all parameters are separated by a space.

Response

“A”
‘A’ is the acknowledge letter

Description: Aborts the Multi-Point Calibration function, if it is currently in progress. This
sub-command also restores the original “A/D samples for averaging” count to the
module that was in use before the calibration function was started.
It should be noted that executing the Configure & Start (‘00’) sub-command again,
after the calibration function has started collecting data (per Collect Data (‘01’) subcommands), but before the final data are calculated (per Calculate & Apply (‘02’)
sub-command), will have the same affect as this Abort function.
Example:
!

Abort the Multi-Point Calibration function previously started
“C 03”
Read response:
“A”

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READ TRANSDUCER VOLTAGES (Command ‘V’)
Purpose:

Command

Returns for the specified channels, the most recently acquired raw pressure data,
converted to volts directly from the averaged A/D counts. This simple engineeringunit conversion bypasses any usage of the transducer’s factory-calculated
coefficients or the final calibration process’s correction coefficients (offset and
gain). Each datum returned in the response will be in the specified high-precision
data format. This command is intended for advanced users only and is not
required for normal operation.
“Vppppf”
‘V’ is the command letter
‘pppp’ is the position field
‘f’ is the format field

Response

“ dddd.. [dddd]”
‘ dddd’ are the data fields, each with a leading space (except f =7 or 8).

Description: The 4-character hex position field (pppp) specifies a 16-bit binary bit-map, with
each bit (set to 1) specifying a particular channel number (16-1, left-to-right).
The 1-character format field (f) specifies the format of each datum field (‘ dddd’)
that will be returned in the requested response. The first datum returned in the
response will be for the highest channel number requested, and each (non-binary)
datum will be preceded by a space character. Some formats may not be applicable
to the specific type of data being requested. Valid formats are shown in the
following table:
f

converts each internal response datum value from..

max.char.

single binary float

7-10-digit signed decimal “ [-xxx]x.xxxxxx”

single binary float

8-digit hex integer “ xxxxxxxx”

dou ble binary float

16-digit hex integer “ xxxxxxxxxxxxxxxx”

single binary float

long integer (EU*1000) then to 8-digit hex integer

single binary float

single binary float (big endian: m sb first)

single binary float

single binary float (little endian: lsb first)

Example:
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Send TCP/IP command to Model 9016 module (via its connected socket) that
returns ASCII decimal fixed-point voltage data for channels 1, 5, 9, and 13:
“V11110”
Response contains data for channels 13, 9, 5, and 1 (left to right):
“ 4.999999 -4.989500 0.005390 2.500001”
This command example also works for Models 9021 and 9022 if non-existent
channel 13 is not set in the position field bit map ( e.g., “V01110”).

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CALCULATE AND SET GAINS (Command ‘Z’)
Purpose:

Command

Instructs a module to calculate new gain coefficients, with either full-scale pressure
(or a specified pressure) applied to the specified channels. These new coefficients
update part of the module’s internal calibration coefficient database, used to convert
any subsequent raw data (from any of the specified channels) into engineering units
data. The new gain values are also returned in the response. This command is
sometimes called a Span or Span-only calibration.
“Zpppp[ vv.vvvv]”
‘Z’ is the command letter
‘pppp’ is the position field
‘ vv.vvvv’ is an [optional] pressure value, preceded by a space character.

Response

“g.gggg .. g.gggg”
‘g.gggg’ are the actual gain data values returned, each preceded by a space.

Description: The position field may have 0 or 4 characters. If no position field is specified, gain
coefficients for all module input channels will be calculated and returned. If a
position field is specified, gain coefficients for only the channels whose bits are set
(=1) will be calculated and returned. If the optional pressure value (vv.vvvv) is
specified, the position field must be 4 characters, even when all channels are to be
specified. Gain values are returned in the response in order of highest specified
channel to lowest specified channel, with data formatted per an implied decimal
format (f=0).
Normally this command requires that the exact full scale input pressure be applied
to the affected channels. The optional pressure value [ vv.vvvv] allows the user to
specify any suitable upscale pressure in the current engineering units. For best
results, pressures in excess of 90% of full scale should be applied. A leading space
character must precede the pressure value parameter.
The desired calibrating pressure must be applied to all of the specified channels and
allowed to stabilize before this command is executed. Such a pressure is
presumably generated by a separate model 903x calibrator module or suitable usersupplied substitute.

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Notice that unlike the Calculate and Set Offsets (‘h’) command, this command does
not automatically move a 9016 module’s calibration valve to its Cal position. A
command to do this must precede this command. The reader is referred to Chapter
4, Section 4.3 for additional details concerning the performance of a Span
Calibration.
Internal firmware limits calculated gains to values are software limited to values
between 0.0 and 100.0. Any calculated value outside of this range will result in the
gain coefficient being set to 1.00.
NOTE: The calculated gain values from the latest ‘Z’ command will be lost
when the module is powered off. To save these gain terms to each
transducer’s non-volatile memory, refer to the Set Operating Options (‘w’)
command (index 09).

Example:
!

Send TCP/IP command to a module (via its open socket) to calculate and set gain
coefficients for channels 8 through 4. Instruct the module to use 14.8890 psi as the
applied pressure instead of each transducer’s full-scale value:
“Z00F8 14.8890”
Read response, containing the new gain values (also stored in the module’s volatile
main memory):
“1.000212 1.000269 1.000437 1.000145 .999670”
Actual gain values are returned in the above response as decimal ASCII strings, each
preceded by a space character. From left-to-right: they are for channels 8, 7, 6, 5,
and 4.

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READ TRANSDUCER A/D COUNTS (Command ‘a’)
Purpose:

Command

Returns the most recently acquired raw pressure data for the specified channels in
averaged signed A/D counts (in the range -32768 to +32767). This simple data
bypasses any usage of the transducer’s factory-calculated coefficients or the final
calibration process’s adjustment coefficients (offset and gain). Each datum returned
in the response will be in the specified high-precision data format, but representing
A/D counts as a signed integer average. (The formula for converting A/D counts to
volts is: Volts = A/D Counts * 5/32768) This command is intended for advanced
users only and is not required for normal operation.
“appppf”
‘a’ is the command letter
‘pppp’ is the position field
‘f’ is the format field

Response

“ dddd.. dddd”
‘ dddd’ are the data fields, each with leading space (except f = 7 or 8).

Description: The 4-character hex position field (pppp) specifies a 16-bit binary bit-map, with
each bit (set to 1) specifying a particular channel number (16-1, left-to-right). Only
channels 12-1 are allowed for Models 9021 and 9022.
The 1-character format field (f) specifies the format of each data field (dddd) that
will be returned in the requested response. The first datum returned in the response
will be for the highest channel number requested. Each datum will be preceded by
a space character. Some formats may not be applicable to the specific type of data
being requested. Valid formats are shown in the following table:
f

converts each internal response datum value from..

max.char.

single binary float to

7-10-digit signed decimal “ [-xxx]x.xxxxxx”

single binary float to

8-digit hex integer “ xxxxxxxx”

double binary float

single binary float to

long integer (EU*1000) then to 8-digit hex integer

single binary float to

single binary float (big endian: msb first)

single binary float to

single binary float (little endian: lsb first)

16-digit hex integer “ xxxxxxxxxxxxxxxx”

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Example:
!

Send TCP/IP command to 9016 module (via its connected socket) that returns
decimal raw “pressure” A/D counts data for channels 1, 5, 9, and 13:
“a11110”
Response contains data for channels 13, 9, 5, and 1 (left to right):
“ 32767.000000 -32700.000000 10.000000 16385.000000”
Please note that channel 13 is saturated at +full scale and channel 9 is almost
saturated at -full scale. Channel 5 reads near zero and channel 1 is about ½ +fullscale.
This command example also works for Models 9021 and 9022 if the non-existent
channel 13 is not set in the position field bit map.

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READ HIGH-SPEED DATA (Command ‘b’)
Purpose:

Command

Returns the most recent scanned/averaged data from all channels of the module as
fast as possible. Data is returned directly in its internal (IEEE single-precision float)
binary form (as per implied format 7). It is used as a faster alternative to the Read
High-Precision Data (‘r’) command, since ‘b’ does not have to parse the position
or format parameters, nor does it have transform or encode the internal data into any
other format when the response is generated.
“b”
‘b’ is the command letter

Response

“aaaabbbbcccc..rrrr”
each 4-byte datum (e.g, ‘aaaa’) is a non-human readable 32-bit (4-byte) bigendian value (format 7) representing an IEEE single-precision internal float
value.

Description: Returns data for all of the module’s channels, in order highest channel number to
lowest channel number. Thus for a Model 9016, channel #16 will always be the first
4-byte (32-bit binary, big-endian, IEEE floating-point) value (‘aaaa’) sent in the
response. For Models 9021 and 9022, channel #12 will be first. It is followed by
similar values for lower numbered channels.
Unless the EU conversion scalar is altered, the returned data will be in units of psi.
Example:
!

Send command to a module (via its “socket” connection) to return data as fast
possible:
“b”
Data from the most recent scan of all the module’s channels are returned in pure
binary form, 4-bytes per channel (big endian):
aaaabbbbcccc .. rrrr
Note that this response is not shown within quotes “ ” since it is not a valid ASCII
character string.
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DEFINE/CONTROL AUTONOMOUS HOST STREAMS (Command ‘c’)
Purpose:

Defines and controls the autonomous delivery of any of up to three concurrent highspeed autonomous data streams to the host computer. Such data streams may be
delivered “continuously” without bound (i.e., until a command explicitly stops
them), or be delivered in a “limited” amount (until a pre-specified fixed number of
data packets have been sent). Each packet delivered may be synchronized by a usersupplied “hardware trigger” or each packet may be delivered periodically as
synchronized by an internal software clock. These concurrent host streams are an
alternate method of acquiring/delivering data rather than using the Read HighPrecision Data (‘r’) command, the Read High-Speed Data (‘b’) command or the
many other special purpose read commands (‘V,’ ‘a,’ ‘t,’ ‘m,’ and ‘n,’) for reading
alternate data values.
Host data streams, once activated in a module, deliver a sequence of TCP/IP or
UDP/IP data packets autonomously to the host (i.e., without the host sending any
particular command to the module to request each packet).

WARNING: If these data streams are defined to occur at high rates, then each data
packet received by the host must be processed and disposed of in a timely
manner. NetScanner™ System modules are capable of generating autonomous
data faster than some “slow” hosts (or incapable software) can absorb.

Various sub-commands (described on the following pages) are used to identify the
various definition and control options of the following general ‘c’ command.
Command

“c ii[ dddd] ... ”
‘c’ is the command letter
‘ ii’ is a space + a sub-command index (augment code)
‘ dddd’ are one or more optional datum fields, each preceded by a space
character which are parameters that differ per augment code ii.
NOTE: all parameters are separated by a space.

Response
Autonomous
Packet:

Depends upon particular sub-command (‘ ii’) sent. See below.
Depends upon the particular sub-command
(‘ ii’) sent. See below.

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Description: The firmware of any module, once fully initialized, continuously scans and converts
data for all pressure channels at the highest possible speed. The result of such
scanning is a continuously updated EU data buffer, available to three concurrent
host data delivery tasks, or available to other standard data acquisition commands
in the module. Each host delivery task can grab engineering-unit data values from
the EU data buffer and deliver them to the host in its own programmable data
stream (a sequence of TCP/IP or UDP/IP packets that autonomously arrive in the
host, as long as the host has enough TCP/IP buffering space to hold them).
Special augments of this command, called sub-commands (distinguished by the first
parameter ii) can configure each data stream with the particular channels whose data
are delivered, the datum format, the delivery rate, and other characteristics. It can
also start, stop, or undefine a single stream or all defined streams.
The maximum rate of any one stream’s delivery is practically limited to the
maximum possible scan and data conversion rate of all the module’s channels.
Normally, these programmable host streams deliver host data at rates equal to or
slower than this natural cycle. For a typical application, the first stream delivers a
few channels at a high rate as defined by a hardware trigger. The second stream
delivers other channels at a medium rate (some multiple of the trigger), and the third
stream can deliver still other channels at a slow rate (a larger multiple of the trigger).
In another application, the three streams might all be programmed to deliver all the
same channels, but the first stream might deliver pressure data (EU only) at high
speed. The second stream might deliver pressure counts or volts at a slower rate, and
the third stream might deliver temperature in all forms (EU, counts, volts) at a very
slow rate.
NOTE:

NOTE:

When using hardware trigger inputs to synchronize data
stream outputs, the frequency of the trigger source should be
no more than 200Hz even if the requested output is 100Hz or
less.

Avoid confusing this Configure/Control Autonomous Host
Streams command ‘c’ (lower case c) with the Configure/Control
Multi-Point Calibration command ‘C’ (upper case C). Like ‘C’,
but unlike most other module commands, all sub-commands of
this command require a space between the command id (‘c’) and
the first parameter (ii).

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Command ‘c’— Sub-command Index 00: Configure A Host Delivery Stream
This sub-command is used to configure the principal parameters of each of the three possible
concurrent host delivery streams, one at a time. Following this configuration phase, the stream (1,
2, or 3) or all streams may be started and stopped with other sub-commands. The sub-command’s
format is:
Command

“c 00 st [[[[p]p]p]p sync per f num”
‘c’ is the command letter
‘00’ is the sub-command index (ii) for configuration
‘st’ is the stream id digit (1, 2, or 3)
‘[[[[p]p]p]p’ is a 1-4 hex digit position field (channel selection bit
map) capable of selecting 1-16 internal channels
‘sync’ is sync type character (0= hardware trigger or 1= clock)
‘per’ is the period (if sync=0: # of trigger periods or if sync=1: delay
timer period in msec).
‘f’ is the format of each acquired datum in stream
‘num’ is the number of packets delivered in the stream
(0=unlimited/continuous).
NOTE: all parameters are separated by a space character.

Response
Autonomous
Packet

“A”
‘A’ is the acknowledge letter
none generated

Description: Configures a particular stream (‘st’) to deliver data packets autonomously to the
host, with each packet containing selected acquired data for the channels specified.
The channels are specified by a standard 16-bit position field bit map (encoded as
a 1-4 hex digit position field ([[[[p]p]p]p). A separate sub-command (ii=05) may be
used to select which acquired data are included in each stream. By default, only
pressure (EU) data are selected (if ii=05 sub-command is never executed for the
stream).
The individual data packets of the stream may be synchronized with either an
external user-supplied hardware trigger or a periodic clock interrupt generated inside
each module. This choice is made with the sync type ‘sync’ parameter (a single
digit) where: 0 = synchronize with hardware trigger; 1= synchronize with periodic
software clock.

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When the hardware trigger is used to synchronize data output ( sync = 0), it is
assumed that the user would prefer to also synchronize internal data acquisition
cycle. For this reason, when a stream utilizing hardware trigger is started, the
module firmware switches out of the free-running continuous data acquisition mode
described earlier. Instead, the module waits in an idle mode until a hardware trigger
is received to initiate a host stream output. Only on the receipt of that hardware
trigger will the module scan and EU convert all attached channels. Following
completion of the acquisition and EU conversion cycle, the module will also deliver
the requested data channels to the host. In this manner, users are provided with
highly synchronized data acquisition and delivery from one or more modules. If a
module waits in the idle mode for an extended period of time without receiving a
data request, it will periodically initiate its own internal data acquisition cycles so
as to update internal thermal coefficients.
When all hardware triggered streams are complete or aborted, an individual module
will return to the default mode of continuous scanning and EU conversion.
When the internal software timer is used to control host stream output rates
(sync=1), note that internal clock frequency variances will result in slightly different
timing between modules. Although these differences in timing are slight, they may
result in noticeable differences in output timing between modules over a long period
of time. If highly synchronized data output is required from multiple modules, the
hardware trigger mode should be used.
The period ‘per’ parameter is a positive decimal integer count (from 0 to
2147483647, specified with 1 to 10 numeric digits as needed), and its meaning
depends on the sync type ‘sync’ parameter described above.
‘sync’

meaning of ‘per’

number of hardware trigger periods to wait before sending each packet

delay period (in milliseconds) to wait before sending each packet NOTE:
minimum is 10 milliseconds

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The ‘f’ parameter identifies the format of each selected acquired datum in each
stream packet, and is a single numeric digit. Valid format codes are listed in the
following table:
f

converts each internal selected acquired datum value from..

max. char.

single binary float

7-10-digit signed decimal “ [-xxx]x.xxxxxx”

single binary float

8-digit hex integer “ xxxxxxxx”

dou ble binary float

16-digit hex integer “ xxxxxxxxxxxxxxxx”

single binary float

long integer (EU*1000) then to 8-digit hex integer

single binary float

single binary float (big endian: m sb first)

single binary float

single binary float (little endian: lsb first)

Unless the EU conversion scalar is altered, the returned pressure data will be in units
of psi. (See command ‘v’, array 11, coefficient 01 for other units.

NOTE:

With the exception of binary formats 7 and 8, all other
formats include a leading space in each datum delivered
in each stream packet.

The number of stream packets (‘num’) parameter is a positive integer count (from
0 to 2147483647, specified with 1 to 10 numeric digits as needed). It sets a finite
limit on the number of packets delivered in the host data stream. The value 0 for
this parameter requests “continuous” output packets for the defined host stream
(unbounded).

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Example:
!

Configure three (3) separate autonomous host delivery streams, and divide the
module’s channels between them. Channels (1-4) must be delivered to host as fast
as possible, channels 5-8 may be delivered at half that rate, while the remaining
channels 9-16 are delivered at half the previous rate. All streams are generated
continuously and synchronized with the internal clock at 100 msec., 200 msec., and
400 msec. periods, respectively. Data are requested in single precision binary IEEE
float format f=7).
“c 00 1 000F 1 100 7 0”
“c 00 2 00F0 1 200 7 0"
“c 00 3 FF00 1 400 7 0"
Read response:
“A”
“A”
“A”
To similarly acquire data at “relative” rates (1, 2, and 4) using a periodic hardware
trigger (assumed to also cycle at 10 Hz rate), enter the commands:
“c 00 1 000F 0 1 7 0”
“c 00 2 00F0 0 2 7 0”
“c 00 3 FF00 0 4 7 0”
Read responses:
“A”
“A”
“A”
The above example is for a Model 9016 module. It would also be suitable for a
Models 9021 and 9022 if no channels above 12 are scanned as in stream 3 above.

NOTE:

The type of data delivered for each specified channel (when the streams
are started) is EU pressure unless sub-command “05” is also executed to
select other types of data in each stream.

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Command ‘c’— Sub-command Index 01: Start Stream(s)
This sub-command is used to start the delivery of any previously configured host stream in a
module. If the stream started is of “continuous” duration, then it will be necessary to use the Stop
Stream sub-command later. Otherwise, the stream will end automatically if a finite number of
packets has been specified for it. This sub-command may also be used to resume a previously
stopped host stream that has not transmitted all requested data packets. The sub-command’s format
is:
Command

“c 01 st”
‘c’ is the command letter
‘01’ is the sub-command index (‘ii’) for Start Stream(s)
‘st’ is the stream id digit (1, 2, or 3, or 0=all streams)
NOTE: all parameters are separated by a space character.

Response
Autonomous
Packet

“A”
‘A’ is the acknowledge letter
“tssss[dddd] .. [dddd]”
‘t’ is a 1-byte binary (8-bit) value identifying the stream number (1-3).
‘ssss’ is a 4-byte binary integer (32-bit, big-endian) packet sequence.
number. Optional binary status may follow the sequence number. (See
“05” sub-command.)
‘dddd’ are the acquired datum values in the selected format plus a leading
space (except f=7 or 8).

Description: This sub-command starts a particular specified host stream (st=1-3), or starts all
configured host streams with a single command (st=0). Each autonomous host
stream packet begins with a 5-byte fixed-format (binary) data header (tssss). The
first byte (t) identifies the host stream, while a 32-bit unsigned binary sequence
number (ssss) completes the header. This sequence number will start at one (1) for
the first packet returned by a stream and increment for each other returned packet
of that stream. In the case of a “continuous” data stream, the sequence number may
overflow the maximum permissible 32-bit integer value. If this occurs, the sequence
number value will wrap around to zero (0) following the largest 32-bit value
(4294967295) and then continue to increment by one for each returned packet. The
sequence number field is intended to provide a mechanism for host software to
ensure that host data stream packets are processed or stored in the order in which
they were obtained by the module. Each of the three possible host streams will
report their own unique sequence number. Note that if a previously stopped data
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stream is restarted, the returned sequence numbers will resume with the next number
at the point of the stream’s termination. The sequence numbers will not restart at
one (1) if a scan list is temporarily stopped and then restarted without reconfiguring
the stream. A “limited” stream will terminate once this sequence number equals the
requested number of packets for the stream. If a “limited” stream is restarted after
expiring, it will restart at sequence number 1.
For periodic hardware-triggered streams, that are never suspended and resumed after
being initially enabled, the sequence number may also serve as a “relative” time
stamp if the period (in milliseconds) of the hardware trigger is known.
If a special sub-command (ii=05) is used to select the content of a stream, other
binary status data may immediately follow the binary stream header and precede the
default Pressure EU Data (if selected). Other special acquired data groups (per
selected channel) may follow or replace the Pressure EU Data. Each datum group
in each packet will be ordered from highest channel number requested to lowest
channel number requested. Each datum (dddd) will be output per the format code
specified when the stream was configured (by sub-command “00” or combination
of “00” and “05”).
Example:
!

Start all the streams configured in the previous example:
“c 01 0”
Read response:
“A”
Soon after the response is received, the requested data stream packets will begin
arriving in the host at a quantity, content, and rate determined by each stream’s own
particular current configuration (per both the “00” and “05” sub-commands).

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Command ‘c’— Sub-command Index 02: Stop Stream(s)
This sub-command is used to stop (or temporarily suspend) the delivery of any previously started
host stream in a module, one at a time or all together, whether the stream was “continuous” or
“limited.” The sub-command’s format is:
Command

“c 02 st”
‘c’ is the command letter
‘02’ is the sub-command index (‘ii’) for Stop Stream
‘st’ is the stream id digit (single stream 1, 2, or 3, or 0=all streams)
NOTE: all parameters are separated by a space.

Response

“A”
‘A’ is the acknowledge letter

Autonomous
Packet

command stops generation of autonomous packets from the requested
stream(s).

Description: This sub-command stops the current “run” of a particular specified host stream
(st=1-3), or stops the current “run” of “all configured” host streams with a single
command (st=0).
Any stopped stream may be resumed (i.e., restarted) with the Start Stream subcommand as long as that stream remains defined in the module and any limited
sequence count has not yet expired. The Clear Stream sub-command may be used
to undefine a stream. Any continuous stream or unexpired limited stream that is
restarted continues generating new sequence numbers (i.e., at the count where it left
off when stopped). However, the stream must be reconfigured with the Configure
a Host Delivery Stream sub-command (00) before it restarts with sequence count
=1. Any expired limited stream must be reconfigured to restart at all.
Example:
!

Stop all the streams configured in the previous example:
“c 02 0”
Read response:
“A”
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Command ‘c’— Sub-command Index 03: Clear Stream(s)
This sub-command is used to “undefine” any previously configured host stream in a module, one
at a time, or all together. The sub-command’s format is:
Command

“c 03 st”
‘c’ is the command letter
‘03’ is the sub-command index (‘ii’) for configuration
‘st’ is the stream identifier character (1, 2, or 3 or 0=all streams)
NOTE: all parameters are separated by a space character.

Response

“A”
‘A’ is the acknowledge letter

Autonomous
Packet

none generated

Description: This sub-command clears (un-defines) the particular specified host stream (st=1-3),
or un-defines “all configured” host streams with a single command (st=0). Once
cleared, a stream must be reconfigured before it can be started.

Example:
!

Stop all the streams configured previously. Then clear (un-define) only stream 3.
Finally, resume the remaining defined streams 1 and 2:
“c 02 0”
“c 03 3”
“c 01 0”
Read response:
“A”
“A”
“A”

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Command ‘c’ — Sub-command Index 04: Return Stream Information
This sub-command returns current stream configuration information in its response. Its format is:
Command

“c 04 st”
‘c’ is the command letter
‘04’ is the sub-command index (‘ii’) for configuration
‘st’ is the stream identifier character (1, 2, or 3 only)
NOTE: all parameters are separated by a space character.

Response

“st [[[[p]p]p]p sync per f num pro remport ipaddr bbbb ”
‘st’ is the stream identifier digit (1,2, or 3)
‘ pppp’ is a hex position field (channel selection bit map)
‘sync’ is sync type character (0 or 1)
‘per’ is the period (# trigger periods or delay timer period)
‘f’ is the format of the data delivered in stream
‘num’ is the number of packets delivered in the stream
‘pro’ identifies the protocol used for stream delivery (1=UDP/IP,
0=TCP/IP.
This protocol identifier pertains to stream delivery only.
‘remport’ identifies the remote port number to which each stream delivery
is directed in the host. A value of -1 indicates that stream delivery is
directed to the same port number the host is using to send commands to the
module.
‘ipaddr’ identifies the IP address of the host to which the stream delivery is
directed.
‘bbbb’ another position field (data options bit map) as specified by the
“05” sub-command.
NOTE: All datum fields separated by a space character.

Autonomous
Packet

none generated

Description: This sub-command returns current configuration information for a particular stream.
Returned values are defined the same as the sub-command parameters of separate
commands Configure a Host Delivery Stream (“00,” Select Protocol, “06,” and
Select Data in a Stream, “05.”). Note that the ‘num’ field represents the number of
packets returned so far (= last sequence number returned, or =0 if stream not yet
started.

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Example:
!

Return configuration information for stream l
“c 04 1”
Read response:
“1 FFFF 0 20 7 32000 1 7002 200.200.200.1”
The above example shows all 16 (sixteen) channels (Model 9016). The value FFFF
would be 0FFF for all channels of Models 9021 and 9022. Data is acquired using
hardware trigger with one (1) data packet acquired for every trigger events. Data is
returned in format 7. (In the above example, 32000 packets have been returned so
far.) Data is sent using UDP protocol to port 7002 at IP address 200.200.200.1.
Pressure EU data only is returned for the requested channels.

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Command ‘c’ — Sub-command Index 05: Select Data in a Stream
This sub-command sets options that cause a specified stream to deliver specific kinds of
information to host. By default, only Pressure EU data are delivered for the channels already
specified by the “00” command.
Command

“c 05 st bbbb”
‘c’ is the command letter
‘05’ is the sub-command index (‘ii’) for Select Data.
‘st’ is the stream id digit (1, 2, or 3, (0 not allowed)
‘ bbbb’ is the hex option field (bit map) to select which options will be
returned in the data stream (see table)
NOTE: all parameters are separated by a space character.

Response

“A”
‘A’is the acknowledge letter.

Description:

If this sub-command is never executed for a particular stream, then
Pressure EU Data are delivered (by default) in that stream
following the fixed format binary header ( tssss as described by the
“01” sub-command). However, this sub-command may also delete
these default pressure readings from a stream (by not specifying
them) as well as add other selected acquired data to a stream (by
specifying them).
The bit map values (shown in the following table) may be added
together to specify all the actual data groups that will be delivered
in each packet of the specified stream. The first two table entries, if
their “bits” are specified, will cause two-byte binary (16-bit, big
endian) status values to be delivered in the stream packet
(immediately following the binary stream header). The third table
entry, if specified, will cause the Pressure EU Data to be delivered
(next), per the specified format (f), and for just the channels
specified in the configured stream. The remaining table entries will
cause other special data groups (i.e., raw pressures and EU
temperature values, also in A/D counts or voltage forms) to also be
delivered in each stream packet. Each of these special data groups
is also output, if its “bit” is specified, in the order of its table entry
(within the packet). Each group will also have a datum per the
specified channels, and be in the specified format (per f).
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NOTE: Selecting too many other data groups will compromise module
performance.

bbbb (hex)

data selected for inclusion in each stream packet

0001 **

Enable Valve Position Status (reserved for future use)

0002

Enable DH Temperature Status (see bit map below)

0010

Enable Pressure EU Data (default if “05” never executed
after “00”)

0020

Enable Pressure A/D Counts

0040

Enable Pressure Voltages

0080

Enable DH Temperature EU Data (degrees C)

0100

Enable DH Temperature A/D Counts

0200

Enable DH Temperature Voltages

Any DH Temperature Status datum is delivered as a two-byte binary bit map (16bit, big endian) with each bit representing the status of DH #16 through DH #1
respectively. A bit value of 0 (zero) indicates the DH is operating within its
specified limits. A value of 1 (one) indicates the DH is outside its specified limits.
Bit #

Chan #

Binary

Hex

The above example indicates that Channels 1 and 16 are operating outside the
specified temperature limits.
** NOTE: This status field (0001) cannot be specified for Models 9016, 9021, or
9022. However it is shown should the capability be added to future firmware
versions. Currently, only Models 9816 and 903x can return Valve Position status in
their streams.

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Example:
!

Configure stream l to return temperature status field, and all Pressure EU data
“c 05 1 0012”
Read response:
“A”
If or when stream 1 is subsequently enabled, data groups in that stream with the
lowest-bit-numbers (table positions) selected are delivered first. In this example
(bbbb = 0012), the DH Temperature Status datum would be first, and then all the
specified Pressure EU data would follow (highest specified channel to lowest
specified channel). The standard 5-byte binary prefix (tssss) that begins all stream
packets would precede this status and data group.(See the Autonomous Packet box
in Start Stream sub-command (index 01.)

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Command ‘c’ — Sub-command Index 06: Select Protocol For Stream Delivery
Command

“c 06 st pro [remport [ipaddr]]”
‘c’ is the command letter.
‘ 06’ is the sub-command index (ii) for Select Protocol.
‘ st’ is the stream id digit (0=the ONLY acceptable entry).
‘ pro’ is the protocol id digit (1=UDP/IP, 0=TCP/IP)
‘ remport’ is an optional remote port number to which each UDP
stream is directed in the host (port 9000 is the default if
unspecified). It is ignored if pro=0.
‘ ipaddr’ is an optional host IP address to which each UDP stream
is directed (default is the host IP address per current TCP
connection that sent this command). It is ignored if pro=0.
NOTE: all parameters separated by a space.

Response

“A”
‘A’ is the acknowledge letter.

Description:

This command sets the protocol by which every configured autonomous stream is
delivered to the host. It must be executed after streams are configured, but
before they are enabled. This command is only available to modules with
firmware revision 2.28 or higher.
By default, streams are delivered via the same TCP/IP protocol used to receive
commands from host (i.e., via the existing TCP/IP connection used to send this
command). However, for special circumstances, all autonomous streams may be
delivered to the host via the UDP/IP protocol instead. This command is required
only when UDP/IP is to be used. It also can restore the default protocol (to TCP/IP)
once it has been changed. The TCP/IP version of the command ignores the optional
(pro and ipaddr) parameters, which have meaning only to the UDP/IP protocol.
Though the command has a stream parameter, it is currently limited to changing the
protocol of all defined streams at the same time (i.e., parameter st must be = 0,
meaning all configured streams).
The optional remport parameter may be any value in the range 1024 to 65535.
However, remport = 7001 should be avoided, since NetScanner modules emit UDP
Query responses to that port, and most host programs should have a UDP socket
already bound to that port for receiving these special responses. The choice of
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remport parameter will affect the way host software must handle multiple modules
sending streams. If every module uses the same port, then a single host socket can
be bound to that port to receive all responses from all modules. The remote IP
address, given to that socket, at time of receipt of the stream’s datagram, will
identify the particular module who sent the datagram. Alternately, every module
may be given a unique remport number, requiring that a host program bind a unique
UDP socket to each of these unique remport numbers. Then, when a particular
socket receives a UDP datagram to its unique port, the module sending it is
automatically identified.
The optional ipaddr parameter is normally unspecified, causing it to default to use
the IP address of the current TCP/IP connection. That way the host need not have
to be aware of its own IP address. This parameter is provided in case a special host
has multiple network interfaces and wants to use more than one. When used, ipaddr
requires four dotted numeric fields (d.d.d.d). Each d is a 1-3 digit decimal number
in the range 0-255. The ipaddr = 255.255.255.255 is best avoided, unless the UDP
datagrams of streams are to be broadcast to all network nodes.

Examples:
!

Configure all streams to be delivered via UDP/IP protocol. Host expects the UDP
datagrams to arrive via port 7500. The IP Address of the current TCP/IP connection
is also used to send each UDP datagram.
“c 06 0 1 7500”
Read response:
“A”

Configure all streams to be delivered via the default TCP/IP protocol.
“c 06 0 0”
Read response:
“A”

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CALCULATE AND SET OFFSETS (Command ‘h’)
Purpose:

Command

Instructs a module to calculate new offset coefficients with zero differential pressure
(or a specified “generated” pressure) applied to the specified channels. These new
coefficients update part of the module’s internal calibration coefficient database,
used to convert any subsequent raw data into engineering units data. The new
offset values are also returned in the response. This command is sometimes called
a Re-zero or zero-only calibration.
“hpppp [vv.vvvv]”
‘h’ is the command letter
‘pppp’ is the position field
‘vv.vvvv’ is an [optional] applied pressure value preceded by a space
character

Response

“g.gggg .. [g.gggg]...”
‘g.gggg’ are the actual offset data values returned, each preceded by a space.

Description: The position field may have 0 or 4 characters. If no position field is specified,
offset coefficients for all of a module’s input channels will be calculated and
returned. If a position field is specified, offset coefficients for only the channels
whose bits are set (=1) will be calculated and returned. If the optional pressure value
[ vv.vvvv] is specified, the position field must be 4 characters, even when all
channels are to be specified. If the optional pressure value [‘vv.vvv’] is not
provided, an applied pressure of 0.0 psi(a) will be assumed when calculating
coefficients. When using the 9021/9022 module with 9401 absolute pressure
transducers, it will usually be required to use the applied pressure field [‘vv.vvv’] as
it may not be possible to apply 0.0 psia to the 9401 transducers. Offset values are
returned in the response in order of highest specified channel to lowest specified
channel, with data formatted per an implied decimal format (f=0).
Before acquiring data with this command, any addressed Model 9016 module will
normally attempt to place the calibration valve in the CAL position, so that a zero
differential pressure can be applied to all channels via the module’s CAL and CAL
Ref input port. Simply leaving these ports unattached will allow the transducers to
read the appropriate zero differential pressure if ambient air pressure is stable. After
data are acquired, the calibration valve will be placed in the RUN position. To
disable the automatic shifting of the calibration valve, refer to the Set Operating
Options (‘w’) command (index 0B). The reader is also referred to Section 4.2 of
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Chapter 4 for additional details concerning the performance of a Re-zero
Calibration.
Models 9021 and 9022, having no valves, will skip the CAL valve change.

NOTE: The calculated offset values from the latest ‘h’ command will be
lost when the module is powered off. To save these offset terms to each
transducer’s non-volatile memory refer to the Set Operating Options
(‘w’) command (index 08).

Example:
!

Send TCP/IP command to a Model 9016 module (via its open socket) to calculate
and set new offset coefficients for channels 16 through 13.
“hF000”
Read response, containing all new offset values (also stored in the module’s volatile
main memory):
“0.0010 0.0020 0.0015 0.0025”
Actual offset values are returned in the above response as decimal fixed-point ASCII
strings, each preceded by a space character. From left-to-right: they are for channels
16, 15, 14, and 13.
This command example also works for Models 9021 and 9022 if the bits in the
position field bit map are restricted to channels 12-1 (e.g., h0FFF).

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READ TEMPERATURE COUNTS (Command ‘m’)
Purpose:

Command

Returns the most recently acquired raw temperature data for the specified channels
in averaged A/D counts (in the range -32768 to +32767). This command is similar
to command ‘a,’ except that the raw data reflects a channel’s temperature signal
instead of its pressure signal. Each datum returned in the response will be in the
specified high-precision data format, but representing A/D counts as a signed integer
average. This command is intended for advanced users only and is not required
for normal operation.
“mppppf”
‘m’ is the command letter
‘pppp’ is the position field
‘f’ is the format field

Response

“ dddd.. dddd”
‘ dddd’ are the datum fields, each with a leading space (except f= 7 or 8).

Description: The 4-character hex position field (pppp) specifies a 16-bit binary bit-map, with
each bit (set to 1) specifying a particular channel number (16-1, left-to-right).
Models 9021 and 9022 use only channels 12-1.
The 1-character format field (f) specifies the format of each data field (dddd) that
will be returned in the requested response. The first datum returned in the response
will be for the highest channel number supplied, and each (non-binary) datum will
be preceded by a space character. Some formats may not be applicable to the
specific type of data being requested. Valid formats are shown in the following
table:
f

converts each internal response datum value from..

max. char.

single binary float

7-10-digit signed decimal “ [-xxx]x.xxxxxx”

single binary float

8-digit hex integer “ xxxxxxxx”

dou ble binary float

16-digit hex integer “ xxxxxxxxxxxxxxxx”

single binary float

long integer (EU*1000) then to 8-digit hex integer

single binary float

single binary float (big endian: m sb first)

single binary float

single binary float (little endian: lsb first)

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Example:
!

Send TCP/IP command to 9016 module (via its connected socket) that returns
decimal raw “temperature” A/D counts data for channels 1, 5, 9, and 13:
“ m11110”
Response contains data for channels 13, 9, 5, and 1 (left to right):
“ 20692.000000 19783.000000 19204.000000 20432.000000”
A Model 9021 or 9022 example would be similar, but without specifying nonexistent channel 13. (“m01110”)

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READ TEMPERATURE VOLTAGES (Command ‘n’)
Purpose:

Command

Returns the most recently acquired raw temperature data for the specified channels
converted to engineering-unit Volts directly from the averaged A/D counts. It is
similar to command ‘V,’ except that the raw data reflects a channel’s temperature
signal instead of its pressure signals. Each datum returned in the response will be
in the specified high-precision data format. This command is intended for
advanced users only and is not required for normal operation.
“nppppf”
‘n’ is the command letter
‘pppp’ is the position field
‘f’ is the format field

Response

“ dddd.. dddd”
‘ dddd’ are the datum fields, each with a leading space (except f= 7 or 8).

Description: The 4-character hex position field (pppp) specifies a 16-bit binary bit-map, with
each bit (set to 1) specifying a particular channel number (16-1, left-to-right).
The 1-character format field (f) specifies the format of each datum field (dddd) that
will be returned in the requested response. The first datum returned in the response
will be for the highest channel number supplied, and each (non-binary) datum will
be preceded by a space character. Some formats may not be applicable to the
specific type of data being requested. Valid formats are shown in the following
table:
f

converts each internal response datum value from..

max. char.

single binary float

7-10-digit signed decimal “ [-xxx]x.xxxxxx”

single binary float

8-digit hex integer “ xxxxxxxx”

dou ble binary float

16-digit hex integer “ xxxxxxxxxxxxxxxx”

single binary float

long integer (EU*1000) then to 8-digit hex integer

single binary float

single binary float (big endian: m sb first)

single binary float

single binary float (little endian: lsb first)

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Example:
!

Send TCP/IP command to 9016 module (via its connected socket) that returns
decimal voltage data (of the raw temperature signal) for channels 1, 5, 9, and 13:
“n11110”
Response contains data for channels 13, 9, 5, and 1 (left to right):
“ 0.53013 0.541698 0.503633 0.000000”
In this example channels 13, 9, and 5 return normal temperature voltage signals in
the range of 0.5 to 0.6 volts. Note that channel 1 returns a value of 0.0 volts,
indicating a possible error in its temperature signal.
A Model 9021/9022 example would be similar, but without specifying the nonexistent channel 13. (“n01110”)

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READ MODULE STATUS (Command ‘q’)
Purpose:

Returns requested module status information.
Command

“qii”
‘q’ is the command letter
‘ii’ is the status index field

Response

“hhhh”
‘hhhh’ is a 4-digit hex datum (or other
(**) decimal datum

Description: The 2-digit hex index field (ii) chooses a particular status field to be returned.
Returned value is described in the following table for each index (a third column
shows any ‘w’ command index for setting same option.
ii

returned value
4-digit hex or other decimal (**)

‘w’
set
index

Module’s Model Number, as decimal (**) integer value (e.g, 9016).

Firmware Version, as hex value
(expressed internally as integer version * 100).
(e.g. hex ‘0100’ = 256 decimal, means Version 2.56)

Power-up Status, as 16-bit hex bit map, bits having the following meaning:
Bit 0 (LSB): A/D Failure Error.
Bit 1: Transducer Re-zero Adjustment (offset) Term Range Error (out-ofrange values set to 0.0 internally).
Bit 2: Transducer Span Adjustment (gain) Term Range Error (out-of-range
values set to 1.0 internally).
Bit 3: Temperature Correction Coefficients Not Present or Out-of-Range (if
transducer has one or more bad coefficients, all set to 0.0).
Bit 4: reserved (for transducer checksum)
Bit 5: FLASH Initialized Data Section Checksum Error (if error, all data
variables set to factory defaults and stored in FLASH).
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Bit 6: SRAM Error.
03

reserved

Number of A/D Samples To Average, as hex value (e.g., 000A=10 decimal).

IP Address Resolution Method, as hex state: (default = 0000)
0000 = Use Static IP Address stored in module’s non-volatile memory
0001 = Get Dynamic IP Address from external RARP/BOOTP server

Host Response/Stream Back-Off Delay, as hex value (or FFFF). FFFF
means use low-order byte of module’s Ethernet Address as value instead. In
either case, back-off delay in microseconds is calculated from decimal
equivalent of hex value:
delay = decvalue * 20

Host Response/Stream Total Size Prefix (with 2-byte big-endian binary
value), added to all command responses and streams to indicate their true
length in bytes:
0000 = None (default)
0001 = Yes

TCP Connect Port, as hex value (e.g. 2328 = 9000 decimal, default).

Auto UDP Broadcast@Reset, as hex state:
0000 = No (default)
0001 = Yes

Temperature Status of Each Scanner Transducer (9016 only), as 16-bit hex
bit map, each bit representing the current status of a transducer/channel (16-1)).
Bit values are:
0= transducer operating within the specified operational limits.
1= transducer operating outside the specified limits.
(see end-of-table NOTE +)

Minimum Temperature Alarm Set Point (9016 only)(in degrees C), as
decimal (**) format 0 representation of internal IEEE float, with leading
space).

Maximum Temperature Alarm Set Point (9016 only)(in degrees C), as
decimal (**) format 0 representation of internal IEEE float, with leading
space).

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Thermal Update Scan Interval (in seconds) as decimal (**) integer value.

9022 Front-end Calibration Interval

(9016 only) Temperature Ranges, as a hex value
0000 = range 0 to 60ºC
0006 = range -30 to 60ºC
0007 = range -20 to 70ºC

(+) NOTE:

This 4-byte hex status fields may also be returned in autonomous data streams, but
as pure binary extensions of each stream’s packet binary header (see ‘c’ command,
ii=05, bbbb=0002).

Examples:
!

Request model number from any NetScanner™ System (9016) module:
“q00”
Read response indicating it is a model 9016:
“9016”

Request TCP back-off delay for any NetScanner™ System module:
“Q07"
Read hex (16-bit binary) response:
“001F” (31 decimal, or 31 x 20=620 µsec.)

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READ HIGH-PRECISION DATA (Command ‘r’)
Purpose:

Command

Returns the most recently acquired engineering-unit pressure data for the specified
channels. Each datum returned in the response will be in the specified highprecision data format.
“rppppf”
‘r’ is the command letter
‘pppp’ is the position field
‘f’ is the format field

Response

“ dddd.. dddd”
‘ dddd’ are datum fields, each with leading space (except f= 7 or 8).

Description: The 4-character hex position field (pppp) specifies a 16-bit binary bit-map, with
each bit (set to 1) specifying a particular channel number (16-1, left-to-right).
Models 9021 and 9022 use only channels 12-1.
The 1-character format field (f) specifies the format of each data field (dddd) that
will be returned in the requested response. The first datum returned in the
response will be for the highest channel number specified. Each (non-binary)
datum will be preceded by a space character (except in the case of f= 7). Some
formats may not be applicable to the specific type of data being requested. Valid
formats are shown in the following table:
f

converts each internal response datum value from

max. char.

single binary float

7-10-digit signed decimal “ [-xxx]x.xxxxxx”

single binary float

8-digit hex integer “ xxxxxxxx”

dou ble binary float

16-digit hex integer “ xxxxxxxxxxxxxxxx”

single binary float

long integer (EU*1000) then to 8-digit hex integer

single binary float

single binary float (big endian: m sb first)

single binary float

single binary float (little endian: lsb first)

Unless the EU conversion scalar is altered, the returned data will be in units of psi.

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Example:
!

Send TCP/IP command to Model 9016 module (via its connected socket), that
returns decimal pressure data for channels 1, 5, 9, and 13 in ASCII fixed point
format:
“r11110”
Response contains data for channels 13, 9, 5, and 1 (left to right):
“ 1.234000 0.989500 1.005390 0.899602”
This command example also works for Models 9021 and 9022 if the bits in the
position field are restricted to channels 9, 5, and 1. (“r01110”)

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READ TRANSDUCER TEMPERATURE (Command ‘t’)

Purpose:

Returns the most recently acquired engineering-unit temperature data (in °C) for
the specified channels. Each datum returned in the response will be in the specified
high-precision data format.
Command

“tppppf”
‘t’ is the command letter
‘pppp’ is the position field
‘f’ is the format field

Response

“ dddd.. dddd”
‘ dddd’ are the datum fields, each with leading
space (except f =7 or 8).

Description: The 4-character hex position field (pppp) specifies a 16-bit binary bit-map, with
each set bit (1) specifying a particular channel number (16-1, left-to-right). Models
9021 and 9022 use only channels 12-1.
The 1-character format field (f) specifies the format of each data field (dddd) that
will be returned in the requested response. The first datum returned in the
response will be for the highest channel number specified. Each (non-binary)
datum will be preceded by a space character. Some formats may not be applicable
to the specific type of data being requested. Valid formats are shown in the
following table:
f

converts each internal response datum value from

max. char.

single binary float

7-10-digit signed decimal “ [-xxx]x.xxxxxx”

single binary float

8-digit hex integer “ xxxxxxxx”

dou ble binary float

16-digit hex integer “ xxxxxxxxxxxxxxxx”

single binary float

long integer (EU*1000) then to 8-digit hex integer

single binary float

single binary float (big endian: m sb first)

single binary float

single binary float (little endian: lsb first)

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Example:
!

Send TCP/IP command to 9016 module (via its connected socket) that returns
decimal temperature data for channels 1, 5, 9, and 13:
“t11110”
Response contains data (in °C) for channels 13, 9, 5, and 1 (left to right):
“ 21.234000 20.989500 21.005390 20.899602”
This command example also works for Models 9021 and 9022 if the bits in the
position field bit map are restricted to channels 9, 5, and 1. (“t01110”)

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READ INTERNAL COEFFICIENTS (Command ‘u’)
Purpose:

Command

Returns one (or more contiguous) requested internal coefficient(s) in a specified
internal coefficient array, and in the specified response data format.
“ufaacc[-cc]”
‘u’ is the command letter.
‘f’ is the format field.
‘aa’ is the array index field.
‘cc[-cc]’ is coefficient index [or contiguous range].

Response

“ dddd.. dddd”
‘dddd’ are the datum fields, each with leading space character.

Description: The 1-character format field (f) is a single decimal digit that defines the format of
each returned datum in the response. All datum ( dddd) fields returned will be
preceded by a space character. Most coefficients have a floating point datum type
(f=0-1), while others have an integer datum type (f=5). Requesting an improper
format will result in an “N08" error response. Valid format types for coefficients
are shown in the following table:
f

converts each internal value from..

max. char.

single binary float

7-10 digit signed decimal “ [-xxx]x.xxxxxx”

single binary float

8-digit hex “ xxxxxxxx”

long binary integer

8-digit hex “ xxxxxxxx”

The 2-character array index field (aa) is a hexadecimal value selecting a particular
internal coefficient array. The first array index (aa=01) refers to channel one’s
transducer, the 16th (aa=10) refers to channel sixteen’s transducer. Finally, the last
array (aa=11) refers to a special global array. Models 9021 and 9022 would have no
data for aa=OD-10 since they only have 12 channels.
A single 2- character coefficient index field ( cc) is a hexadecimal value that selects
a particular coefficient within the specified array. Multiple contiguous coefficients
of the same type may be specified by using a coefficient index“range” specified by
adding a hyphen (negative sign) between two such indexes (cc-cc).

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The coefficients of internal DH200 transducers used in the Model 9016 are selected
with array indexes aa=01 through 10 (hex). Coefficients of external 9400
transducers used by Models 9021 and 9022 (digitally compensated) are selected
with array indexes aa=01 through 0C (hex). All valid coefficient indexes (for each
of these arrays) are listed in the following table:
NOTE:

Coefficients used for typical applications are shown in BOLD type.
All other coefficients are typically not used outside of advanced
diagnostic functions.

Transducer Coefficient Description

Datum
Type

Re-zero Cal Adjustment (offset) term

FLOAT

Span Cal Adjustment (gain) term

FLOAT

Dynamic EU Conversion coefficient c0

FLOAT

Dynamic EU Conversion coefficient c1

FLOAT

Dynamic EU Conversion coefficient c2

FLOAT

Dynamic EU Conversion coefficient c3

FLOAT

Reserved for Factory Use

User Defined Date field (see end-of-table note)

INTEGER

Date of Factory Calibration (see end-of-table note)

INTEGER

Transducer Manufacturing Reference number

INTEGER

Transducer Full-Scale Range code (see Appendix F) INTEGER

----

0B-0F

Temperature 1, Pressures 1-5 voltages

FLOAT

10-14

Temperature 2, Pressures 1-5 voltages

FLOAT

15-19

Temperature 3, Pressures 1-5 voltages

FLOAT

1A-1E

Temperature 4, Pressures 1-5 voltages

FLOAT

1F-23

Temperature 5, Pressures 1-5 voltages

FLOAT

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Transducer Coefficient Description

Datum
Type

24-28

Temperature 6, Pressures 1-5 voltages

FLOAT

29-2D

reserved for future use (temperature 7)

FLOAT

Tempe rature 1 Tempe rature O utput vo ltage at 0 psi

FLOAT

Tem perature 2 Tem perature O utput voltage at 0 p si

FLOAT

Tem perature 3 Tem perature O utput voltage at 0 p si

FLOAT

Tem perature 4 Tem perature O utput voltage at 0 p si

FLOAT

Tem perature 5 Tem perature O utput voltage at 0 p si

FLOAT

Tem perature 6 Tem perature O utput voltage at 0 p si

FLOAT

(reserved) T empe rature 7 T empe rature Output voltage at 0 psi

FLOAT

Temp Vs Pressure Correction coefficient (t0)

FLOAT

Temp Vs Pressure Correction coefficient (t1)

FLOAT

Temp Vs Pressure Correction coefficient (t2)

FLOAT

Temp Vs Pressure Correction coefficient (t3)

FLOAT

Pressure Voltage Gain Index

Integer

Temperature Voltage Gain Index

Integer

Current Calculated Pressure (PSI)

FLOAT

The User Defined Date field (cc=07) is also a 32-bit integer which may be encoded
in a similar manner. Possible uses are to indicate the date of last user zero and/or
span calibration or possibly the date of next required calibration. If this optional
field is used, the user is responsible for correctly encoding the date into the
appropriate 32-bit integer value. Any modifications of this field (using the
Download Internal Coefficients (‘v’) command) will result in the new value
automatically being entered to transducer non-volatile memory.
The Date of Factory Calibration field (cc=08) identifies the date of factory
calibration for the DH200 transducer (9016) or 9400 transducer (9021/9022. It is
stored internally as a 32-bit integer whose value (viewed as a decimal number) is in
the format of yymmdd (year, month, day).

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A special single Other Coefficients array is selected with array index aa=11 (hex).
All the valid coefficient indexes (for this array only) are listed in the following table:
cc

Other Coefficients Description

Datum
Type

reserved - EU conversion offset term

FLOAT

EU Pressure Conversion scaler (default=1.0)

FLOAT

Reserved - EU conversion Non-Linearity term

FLOAT

Reserved-Reference Voltage value

FLOAT

Gain=1 Reference Coefficient (9021/9022 only)

FLOAT

Gain=20 Reference Coefficient (9021/9022 only)

FLOAT

Gain=45 Reference Coefficient (9021/9022 only)

FLOAT

Gain=90 Reference Coefficient (9021/9022 only)

FLOAT

18 Temperature Gain Reference Coefficient (9022
only)

FLOAT

Example:
!

Send TCP/IP command to module (via its connected socket) requesting the most
recent calibration adjustment’s offset and gain terms (cc=00-01), and the adjacent
factory-determined transducer coefficients C0 through C4 (cc=02-06) for transducer
1: Data requested in ASCII-hex format representing the internal binary floating point
format.
“u10100-06”
Response returned is:
“ 3B200A6E . . 00000000”
NOTE:

The maximum response size is 300 characters. If the requested
range of coefficients requested exceeds this, the module will
return an “N07" error response.

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DOWNLOAD INTERNAL COEFFICIENTS (Command ‘v’)
Purpose:

Downloads one or more internal coefficients to the module.
Command

“vfaacc[-cc]dddd..dddd”
‘v’ is the command letter.
‘f’ is the format field.
‘aa’ is the array index field.
‘cc[-cc]’ is coefficient index [or contiguous range].
‘dddd’ are the datum field(s) each with a leading
space.

Response

“A”
‘A’ is the acknowledge letter.

Description: The 1-character format field (f) is a single decimal digit that defines the format of
each coefficient to be downloaded in the command’s datum ( dddd) fields, with each
datum preceded by a space character. Most coefficients have a floating point datum
type (f=0-1), while others have an integer datum type (f=5). Sending a datum in the
improper format will result in an “N08" error response. Valid format types are
shown in the following table:
f

converts each datum parameter value (‘ dddd’) from..

max. char.

1-10 digit signed decimal “ [-xxx]x.[xxxxxx]”

single binary float

8-digit hex “ xxxxxxxx”

single binary float

8-digit hex “ xxxxxxxx”

long binary integer

The 2-character array index field (aa) is a hexadecimal value selecting a particular
internal coefficient array to receive the downloaded data. The first array index
(aa=01) refers to channel 1's transducer, the 16th (aa=10) refers to channel 16's
transducer. Finally, the last array (aa=11) refers to a special global array.
A single 1- or 2- character coefficient index field (c or cc) is a hexadecimal value
that selects a particular coefficient within the specified array. Multiple contiguous
coefficients may be specified by using a coefficient index “range” specified by
adding a hyphen (negative sign) between two such indexes.

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Transducer Coefficient Description

Datum Type

Re-zero Cal Adjustment (offset) term

(Note 1)

FLOAT

Span Cal Adjustment (gain) term

(Note 2)

FLOAT

Dynamic EU Conversion coefficient c0

(Note 3)

FLOAT

Dynamic EU Conversion coefficient c1

(Note 3)

FLOAT

Dynamic EU Conversion coefficient c2

(Note 3)

FLOAT

Dynamic EU Conversion coefficient c3

(Note 3)

FLOAT

User Defined Field

(Note 4)

INTEGER

Transducer Manufacturing Reference Number (Note 5)

INTEGER

Transducer Full-Scale Range Code (See Appendix F) (Note
5)

INTEGER

Pressure Voltage Gain Index

INTEGER

Temperature Voltage Gain Index

(Note 5)

INTEGER

(Note 1)

Related command ‘w08’ can be used to download the offset term to the sensor’s
non-volatile memory (digitally or non-digitally compensated sensor).

(Note 2)

Related command ‘w09’ can be used to download the gain term to the sensor’s nonvolatile memory (digitally or non-digitally compensated sensor).

(Note 3)

Related command ‘w27’ can be used to download coefficients to the 9400 sensor’s
non-volatile memory (9021/9022 non-digitally compensated ONLY).

(Note 4)

Data is immediately stored to the sensor’s non-volatile memory.

(Note 5)

Data is immediately stored to the sensor’s non-volatile memory (9021/9022 nondigitally compensated ONLY).

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

The User Defined Date field (cc=07) is a 32-bit integer. Possible uses are to
indicate the date of last user zero and/or span calibration or possibly the date of next
required calibration. If this optional field is used, the user is responsible for
correctly encoding the date into the appropriate 32-bit integer value e.g., a decimally
encoded ‘yymmdd’ date. Any modifications of this field (using the Download
Internal Coefficients (‘v’) command) will result in the new value automatically
being entered to transducer non-volatile memory.
A special single Other Coefficients array is selected with array index aa=11 (hex).
All the valid coefficient indexes (for this array only) are listed in the following table:

Other Coefficients Description

Datum
Type

EU Pressure Conversion scaler (default=1.0)

FLOAT

Gain=1 Reference Coefficient (9021 /902 2 only)

FLOAT

Gain=20 Reference Coefficient (902 1/90 22 o nly)

FLOAT

Gain=45 Reference Coefficient (902 1/90 22 o nly)

FLOAT

Gain=90 Reference Coefficient (902 1/90 22 o nly)

FLOAT

Tempe rature G ain Re ference Co efficient (9022 only)

FLOAT

Examples:
!

Send TCP/IP command to module (i.e., via its connected socket): with replacement
values for the channel’s offset and gain correction terms loaded into the module’s
volatile memory (cc=00-01). Load these into channel # 8's Transducer Coefficient
array (aa=08).
“v00800-01 0.000 1.000”
Response returned is:
“A”

Send command to module (via its connected socket) to change its default EU output
from psi to kPa. This will be done by changing the EU Pressure Conversion
Scaler to 6.894757.
“v01101 6.894757”
Response returned is
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“A”
SET/DO OPERATING OPTIONS/FUNCTIONS (Command ‘w’)
Purpose:

Change a module’s default operating option settings, or invoke special internal
operations or functions.
Command

“wii[dd[ eeee]]”
‘w’ is the command letter.
‘ii’ is the option index field.
‘dd’ is an [optional] hex datum field.
‘eeee’ is an [optional] extra datum with a leading space
character.

Response

“A”
‘A’ is the acknowledge letter.

Description: The index field (ii) contains two hex digits that identify the specific option to be set
or function to be performed. The datum field (dd), when present, contains 2 hex
digits. A few indexes also require an extra datum field (eeee). Valid
options/functions are listed in the table below (-- marks a missing datum field in its
column, and fourth column shows any ‘q’ command index that reads same option):
ii

Execute Internal Self Test.

Update Internal Thermal Coefficients.

02-06

Reserved for factory use

Store Operating Options in non-volatile flash memory.

Store Current Offset Terms in transducers’ non-volatile
memories.

Store Current Gain Terms in transducers’ non-volatile
memories.

01-10

Set Number of Channels in Module (default =16 for
9016, 12 for 9021 and 9022).

Description

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‘q’ read
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Description

Enable Automatic Shifting of Calibration Valve during
Calculate and Set Offsets (‘h’) command (default). (9016
only)
Disable Automatic Shifting of Calibration Valve in ‘h’.
User will manually control calibration value. (9016 only)

0B
01
0C

NetScanner™ System (9016, 9021, & 9022) User’s Manual

00
01

‘q’ read
index

Set Cal Valves to RUN or LEAK Position (default)
— choice made by ii=12. (9016 only)
Set Cal Valves to CAL/RE-ZERO or PURGE Position
— choice made by ii=12. (9016 only)

0B
see
chart
below

0D-0E

Reserved for factory use

00
01

Disable periodic Thermal Coefficient Update task.
Enable periodic Thermal Coefficient Update task
(default).

01-20

Reserved for factory use

Set Cal Valves to RUN or CAL/RE-ZERO Position
(default) — choice made by ii=0C. (9016 only)
Set Cal Valves to PURGE or LEAK Position — choice
made by ii=0C. (9016 only)

0B
see
chart
below

Set Number of A/D Samples to Average. (default = 8).
Valid values are 1, 2, 4, 8,10, 20 hex: (1, 2, 4, 8,16, 32
decimal)

00
01

Use Static IP Address Resolution (default)
Use Dynamic IP Address Resolution (RARP/BOOTP)
(Results in immediately becoming the module’s new
power-on default)

00
01

Disable Host Response/Stream Back-Off Delay (default).
Enable Host Response/Stream Back-Off Delay as loworder byte of Ethernet Address(converted to decimal value
* 20 µsec.).
Enable Host Response/Stream Back-Off Delay specified
per eeee as decimal value (* 20 µsec.)

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Description

00
01
02
03

(for Models 9021 and 9022 only; reserved for 9016)
Set Amplifier Gain to 5000 mV FS Range (G=1) (default)
Set Amplifier Gain to 250 mV FS Range (G=20)
Set Amplifier Gain to 100 mV Range (G=45)
Set Amplifier Gain to 50 mV FS Range (G=90)

NetScanner™ System (9016, 9021, & 9022) User’s Manual

00
01

‘q’ read
index

Disable Host Response/Stream Total Size Prefix
(default).
Enable Host Response/Stream Total Size Prefix (2-byte
big-endian binary value with total size of response or
stream data in bytes that follows it).

Set TCP Connect Port per eeee as decimal value
(default=9000).

00
01

Disable Auto UDP Broadcast at Reset (default).
Enable Auto UDP Broadcast at Reset.

Set Minimum Temperature Alarm Set Point (in NC)
per eeee as decimal value (default = 0 NC).
Set Maximum Temperature Alarm Set Point ( in NC)
per eeee as decimal value (default = 60 NC).

Set Thermal Update Scan Interval per eeee as decimal
value (seconds), 1 <= eeee <= 3600 seconds (default = 15).

(9022 ONLY) Set Front-end Automatic Calibration
Interval. 5 <=eeee <=3600 seconds (default=60); 0=turn
off calibration.

(9022 ONLY) Calculate Front-end Calibration
Coefficients Immediately.

(for Models 9021 and 9022 ONLY) Set Generic Sensor
Parameters to Default. (Offset term=0.0; Gain term=1.0;
c0=0.0; c1=1.0; c2=0.0; c3=0.0; user-defined date=0;
manufacturing reference number=0; full-scale range
code=0; front end gain=0 (unity))

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Description

(for Models 9021 and 9022 ONLY) Initialize Generic
Sensor Parameters with Factory Default Parameters on
Power-up.
Retrieve user-provided parameters out of non-volatile
memory

‘q’ read
index

Store current coefficient terms into transducer’s nonvolatile memory. (For use only with non-digitally
compensated 9400 sensors with EEPROM.) (‘w27’ selects
all channels) (‘w2700 eeee’ selects individual channels via
the position field)

(9016 only) Set Temperature Range = 0 to 60ºC default

Set Temperature Range = -30 to 60ºC

Set Temperature Range = -20 to 70C

Modification of option 13 hex results in the new option selection becoming the module’s new
power-on default. All other options must be stored in non-volatile flash memory using ‘w07’
command in order to be retained after the module power cycles.

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

The Valve Position indexes (ii=12 and ii=0C) (for Model 9016 only) each have two states (00/01)
that when combined provide four (4) possible states of the C1/C2/C3/C4 internal valves. This
“Logical Rotary Switch” with four (4) positions is summarized in the following chart:
C1 Energized
C2 Not
(0C=01)

C2 Energized
C1 Not
(0C=00)

PURGE
position

LEAK/CHECK
position

CAL/RE-ZERO
position

RUN
position

C3 Energized
C4 Not
(12=01)
C4 Energized
C3 Not
(12=00)

Example:
!

Send TCP/IP commands to 9016 module (via its connected socket) setting the
calibration valve to the CAL (or Re-Zero) position:
“w1200"

(Set RUN/CAL valve position)

“w0C01”

(Set CAL position)

Responses (both commands):
“A”
“A”
NOTE:

If the programmer “knows” that the module is already in the RUN/CAL
valve mode, the first command above is optional. For more information, see
Figures 4.1 through 4.4 in Chapter 4.

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

NETWORK QUERY (UDP/IP Command ‘psi9000’)
Purpose:

To determine how many (and which) modules are powered-up and operational on
the network.
Command

“psi9000"

Response

“ipadr, ethadr, sernum, mtype,
sfwver, connst, ipadrst, lisport,
subnet, iparpst, udpast, pwrst,”

Description: When a module receives this broadcast command (by continuously monitoring port
7000) it responds with a broadcast (on port 7001) with an ASCII response
containing comma-separated parameters. These are listed in the following table:
Parameter

Meaning

ipadr

IP address

ethadr

Ethernet address

sernum

Serial number

mtype

Module type (e.g., 9016)

sfwver

Software version (e.g., x.xx decimal format)

connst

Connection status (1=connected, 0=available)

ipadrst

IP address status (1=has one, 0=waiting for server)

lisport

IP listening port for connections (default=9000)

subnet

Subnet mask

iparpst

IP address resolution status (1=uses RARP/BOOTP
server, 0=uses static IP address stored internally)

udpast

UDP auto status (1=broadcasts this response
automatically after connection possible, 0=only sends
response for “psi9000" UDP/IP command.

pwrst

Power-up status (same as a ‘q02' command response)

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

Some special rack-mounted module types (e.g., 9816) also add rack, cluster, and slot
parameters to the response above. These additional parameters are added following the
‘pwrst’ parameter.
This uniform network query response allows a client host program to identify, configure,
and use any suitable group of modules (for the task at hand) by simply opening a TCP/IP connection
between itself and each available module needed.
Example:
!

Query all module(s) on the network.
“psi9000”
Response(s):
200.201.7.207, 0-e0-8d-1-7-cf, 1999, 9022, 2.32, 0, 1, 9000, 192.0.0.0, 0,
1, 0x0

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

RE-BOOT MODULE (UDP/IP Command ‘psireboot’)
Purpose:

To unconditionally “reboot” a specified module.
Command

“psireboot ethadr”
where ethadr is the Ethernet address
of the specified module in the
following special hex-digit format
‘xx-xx-xx-xx-xx-xx’

Response

none (module reboots)

Description: When a module receives this broadcast command, (by continuously monitoring port
7000) it responds by immediately restarting its firmware. The result is essentially the
same as a power-up restart, in that any TCP/IP connection is lost, and the module
returns to its normal startup state. The host must wait long enough for the re-boot
process to be completed before it can again request a connection to the module.
Example:
!

Re-boot a specified module on the network.
“psireboot 00-E0-8D-00-00-01”
Response:
(None)

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

CHANGE MODULE’S IP ADDRESS RESOLUTION METHOD & RE-BOOT
(UDP/IP Command ‘psirarp’)
Purpose:

To change (toggle) the current IP address resolution state (ipaarpst) of a specified
module, and then unconditionally “re-boot” it.
Command

“psirarp ethadr”
where ethadr is the Ethernet
address of the specified module
in the following special hex-digit
format
‘xx-xx-xx-xx-xx-xx’

Response

none (module re-boots)

Description: When a module receives this broadcast command, (by continuously monitoring port
7000) it responds by toggling its current ARP method to one of two states: dynamic
resolution or static resolution. Then it restarts its firmware. The result is essentially
the same as a power-up restart, in that any TCP/IP connection is lost, and the
module returns to its normal startup state. However, if it used the static resolution
method before it received this command, after the re-boot, it will not have a valid
IP address until an external network server (RARP or BOOTP) provides it with one.
However, executing the command a second time will restore it to using its original
statically-assigned IP address (after another re-boot finishes).
Just as for the “psireboot” command, the host must wait long enough for the re-boot
process to be completed before it can again request a connection to the module.
Example:
!

Reconfigure a specified module on the network so that it uses its “other” IP address
resolution method, and also re-boot it. Presumably, the host knew the module’s
current state (iparpst) as a result of a recent Network Query response from the
module.
“psirarp 00-E0-8D-00-00-01”
Response:
(None)

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3.3

NetScanner™ System (9016, 9021, & 9022) User’s Manual

Obsolete Commands

Users of older model 9010, 9015, and 9020 modules will notice that several previously documented
commands are missing. Most of these missing commands were “standard” Optomux commands
that were never of functional value for NetScanner™ System modules. This is mainly because of
basic design philosophy differences between PSI and vendors of other less capable Optomux
modules. These commands were included in the original NetScanner™ System/9000 System
documentation and module firmware for compatibility with third party software packages. Such
commands have now been removed from the NetScanner™ System documentation in the interest
of easier learning and product simplicity. They may still continue to exist in newer firmware
versions of several older models. However, they are not available in the 9016, 9021, and 9022
models, and will eventually be removed from all NetScanner™ System firmware.
Obsolete commands fall into three classes:
! dummy commands (that executed but essentially did nothing),
! duplicate commands (with capabilities less than (or the same as) other “alternative” commands),
and
! piecemeal commands (that executed only parts of other “complete” commands).
Obsolete dummy commands include:
‘C’
Set Turn-Around Delay,
‘G’
Configure Positions,
‘H’
Configure as Inputs;
and users should remove any usage of these from host programs if use of newer NetScanner™
System modules is contemplated.
Obsolete duplicate commands include:
‘j’
Read Module Configuration, and
‘M’ Read and Average Analog Inputs;
which should be replaced by commands Read Module Status (‘q’) and Read Scaled Analog Inputs
(‘L’) or Read High Precision Data (‘r’).
Obsolete piecemeal commands include:
‘T’
‘I’
‘U’
‘g’
‘W’
‘X’
‘Y’

Start Input Averaging,
Read Average Completion Bits,
Read Input Averaged Data,
Calculate Offsets,
Set Offsets,
Calculate Gains,
Set Gains;
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which should be replaced as follows. The sequence ‘T’, ‘I’, and ‘U’ were piecemeal parts of the
(now obsolete) command ‘M,’ which was itself replaced by Read Scaled Analog Inputs (‘L’).
Also, there is the higher-resolution alternative Read High-Precision Data (‘r’) command. The
piecemeal pair of calibration commands ‘g’ and ‘W’ have always had a complete alternative, the
Calculate and Set Offsets (‘h’) command. Likewise, the other pair of calibration commands ‘X’
and ‘Y’ have always had a complete alternative, the Calculate and Set Gains (‘Z’) command.

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

Chapter 4
Calibration
4.1

Introduction

Each internal DH200 transducer in a NetScanner™ System Intelligent Pressure Scanner (Model
9016) contains non-volatile read/write memory capable of storing the transducer's full thermal and
pressure calibration data. For Models 9021 and 9022, most Series 9400 transducers (that have
“digital compensation” specified for them) also have thermal sensors and on-board non-volatile
memory. However, 9400 and 9401 transducers with ranges greater than 750 psi, all 9402 transducers,
and other analog only transducers do not contain storage or thermal sensors. These units are
generally measured as scaled voltages only. The internal firmware of each module reads all of the
calibration data in any available memory from each transducer upon power up and then dynamically
calculates other conversion coefficients that convert transducer output into pressure at the current
measured temperature. The firmware uses these coefficients for all subsequent engineering-unit data
conversions performed. If no memory is found, that channel reads voltage (NOT EU pressure). In
this case, any command responses or streams that normally return pressure values return voltage
values instead.
All NetScanner™ System Intelligent Pressure Scanner modules use a third-order polynomial to
convert transducer output voltage to pressure. All calculations are carried out internally using high
precision math. The following formula is used for all pressure output calculations.
PT(V)

[C0(T) + C1(T)*V + C2(T)*V2 + C3(T)*V3] * C SPAN - CRZ

where:
PT
=
V
=
C0(T) .. C3(T) =
CRZ
CSPAN

=
=

Calculated applied pressure
Transducer output voltage
Conversion coefficients generated from calibration data at
temperature T.
Re-zero adjustment’s “offset”correction coefficient
Span adjustment’s “gain” correction coefficient

Since the polynomial’s coefficients are a function of the current temperature, they are dynamically
re-calculated by the module firmware (with other equations) to compensate for each transducer’s
measured temperature change.
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NetScanner™ System (9016, 9021, & 9022) User’s Manual

Each model 9016 Intelligent Pressure Scanner contains an integral purge/leak check calibration
manifold. (Models 9021 and 9022 have no valves.) Through software commands to each 9016, this
valve may be placed in one of four positions: RUN, CAL, PURGE, or LEAK-CHARGE. (See the
Set/Do Operating Options/Functions (‘w’) command (ii=0C & 12) in Chapter 3, and in particular
the Valve Position Chart at the end of command’s description.) When each module’s internal
calibration valve is placed in the CAL/RE-ZERO position (through software commands), all
DH200 transducer pressure inputs are pneumatically connected to the CAL input ports. All DH200
reference inputs are pneumatically connected to the CAL REF input port. The CAL input may be
used to perform on-line zero adjustment of the 9016’s transducers. This capability virtually
eliminates sensor zero drift error and ensures the highest possible data accuracy. The CAL input
may also be used for DH200 span adjustment calibrations. Span calibration of multi-range scanners
may also utilize the CAL input ports if the highest applied pressure does not exceed the proof
pressure rating of any installed transducer. Zero and span adjustment functions may also be
performed on Models 9021 and 9022 channels, but any valving must be supplied externally.
For reference when operating the 9016 calibration manifold, Figures 4.1 through 4.4 show
simplified pneumatic diagrams of the calibration manifold in its various positions.

NOTE:

Periodic zero and span calibration should be the only calibration required
to maintain specified performance throughout the life of the scanner.

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

Figures 4.1 - 4.4
Pneumatic Diagrams of the Calibration Manifold

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4.2

NetScanner™ System (9016, 9021, & 9022) User’s Manual

Re-zero Calibration

The NetScanner™ System Intelligent Pressure Scanners including Models 9016, 9021, and 9022
are capable of independently performing a transducer calibration adjustment function, referred to
as Re-zero adjustment (or simply Re-zero Cal). The Re-zero calibration will result in a recalculated
“offset” coefficient for each channel being calibrated, which automatically compensates for any
transducer offset drift errors. Since the factory-set coefficients in each transducer (that characterize
both pressure and temperature) are extremely stable over time, these simple offset corrections
compensate for the majority of transducer errors over time. For this reason, a Re-zero may be the
only calibration adjustment required by many applications. For those applications requiring more
accuracy, an optional single-point Span-only calibration adjustment will be described in Section
4.3. An improved multi-point calibration adjustment, integrating both the Re-zero and Span
calibration process will be described in Section 4.4.
For Model 9016, with integral DH200 pneumatic transducers, internal manifolds and valves allow
a Re-zero calibration to be accomplished easily and automatically. For Models 9021 and 9022,
which have external 9400, 9401 or 9402 (or third-party) all-media transducers, the user must supply
any necessary valves and controls to accomplish the application of a “minimum” pneumatic or
hydraulic pressure to these transducers before executing the re-zero adjustment.
When instructed to execute a Calculate and Set Offsets (‘h’) command, the NetScanner™ System
module will automatically perform the Re-zero adjustment calibration, and then update the offset
coefficients in its volatile memory. It will subsequently use the newly calculated terms for all future
engineering-unit calculations until power is lost to the module.
NOTE: When using the Calculate and Set Offsets command (‘h’), only local terms in
the module’s volatile main memory (RAM) are updated. Under normal operation, it is
not recommended to store these new coefficients in transducer non-volatile memory.
Instead, the re-zero should be performed at regular intervals. Refer to Section 4.6 if it
is desired to also store these new re-zero terms in transducer nonvolatile memory.

4.2.1. Re-zero Calibration Valve Control
When instructed to execute a Re-zero (Calculate and Set Offsets (‘h’)) command, Model 9016
modules will normally shift the internal calibration valve into the CAL position and use the
pressures present at the CAL and CAL REF inputs for the “minimum” (e.g., zero) calibration
pressure. After the Re-zero adjustment is complete, the Model 9016 calibration valve will be placed
in the RUN position. Models 9021 and 9022 assume a “minimum” calibration is already applied
to the transducers. This automatic shift of the calibration valve can be disabled through use of the
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Set Operating Options (‘w’) (option index=0B hex) command. This allows independent control
of the calibration valve by the user using other options (see option indexes = 0C and 12 hex) of the
same command.

4.2.2 Re-zero Calibration Summary
Following is a simple, step-by-step procedure for executing a Re-zero calibration of a 9016 or
9021/9022 Intelligent Pressure Scanner. For Models 9021 and 9022, skip the steps that manipulate
valves as denoted by a double asterisk (**). Optional commands are shown within brackets [ ].
Description

9016
Command

Disable automatic valve shifting after module power up. Ensure
valves in RUN/CAL mode (default)

9021/9022
Command

[w0B01]
[w1200]

… normal data acquisition
Apply 0.0 psi differential to the module CAL and CAL REF
inputs.
Place the module calibration manifolds into the CAL position [if w0C01
w0B01 command executed in Step 1]

Delay for settling of pneumatic inputs
Verify that measured data reads near expected zero value

[rFFFF0]

[r0FFF0]

Instruct module to calculate new offset coefficients for all 16
channels of Model 9016 (all 12 for Models 9021and 9022)

hFFFF

h0FFF

Place calibration manifold back into the RUN position [if
w0B01 command executed in Step 1]

[w0C00]

Store new offset coefficients to transducer nonvolatile memory

**
[w08]

… continue normal data acquisition

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4.3

NetScanner™ System (9016, 9021, & 9022) User’s Manual

Span Calibration

For improved accuracy, the NetScanner™ System Intelligent Pressure Scanners are capable of
independently performing a transducer calibration function, referred to as Span adjustment (or
simply Span Cal). Actually, there is a provision to supply any suitable “upscale” pressure (e.g.,
actual transducer full-scale) during such a calibration adjustment. The Span adjustment calibration
will result in a recalculated “gain” coefficient for each channel being calibrated, to compensate for
any transducer or module gain errors. For best results, a Re-zero calibration should be performed
before performing a span calibration. Also, note that a new and improved Multi-Point Calibration
function exists (for modules with firmware version 2.24 of higher). This function integrates the
separate calibration functions (for Re-zero and Span adjustment described in Section 4.2 and this
section) into a single function that adjusts both “offset” and “gain” coefficients at the same time,
using two or more calibration points. Details of using this improved calibration function are
described in Section 4.4.
For Model 9016, with integral DH200 transducers, internal manifolds and valves allow a Span
adjustment pneumatic calibration to be accomplished easily and automatically. For Models 9021
and 9022, which have external 9400, 9401 or 9402 (or third-party) all-media transducers, the user
must supply any necessary valves and controls to accomplish the application of an upscale
pneumatic or hydraulic pressure to these transducers before executing the span adjustment.
It is recommended that a Span adjustment be performed whenever new transducers are installed in
the instrument. In such cases, the new gain coefficients that result should always be stored back
into the transducer’s non-volatile memory. In other cases, the user’s application may not require
periodic span adjustment since the other factory-determined pressure/temperature coefficients
(stored permanently inside each transducer) are extremely stable. Only an occasional Re-zero
adjustment may be all that is necessary.
When instructed to execute a Calculate and Set Gains (‘Z’) command, the module will perform
the Span adjustment calibration, and then update the gain coefficients in its memory. It will
subsequently use the newly calculated gain terms for subsequent engineering-unit calculations until
power is lost to the module.
NOTE: When using the Calculate and Set Gain (‘Z’) command, only the local variables in
the module’s volatile main memory (RAM) are changed. Refer to Section 4.6 if it is
desired to also store these new gain coefficients in transducer nonvolatile memory.

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

4.3.1. Span Calibration Valve Control
Before executing a Span adjustment (Calculate and Set Gains (‘Z’) command), the Model 9016
modules should have their calibration manifold valve placed in the proper position. For single
pressure range units the CAL position should be used since the span calibration pressure can be
applied between the CAL and CAL REF ports. Since the module will not attempt to shift this
valve automatically, as it does for Re-zero adjustment, it should manually be placed in the desired
position with the Set Operating Options (‘w’) command (option indexes = 0C and 12).
When span calibrating Model 9016 modules with multiple ranges installed, the CAL port may be
used to apply pressure to all transducers only if the specified proof pressure is not exceeded on
any channel. Refer to Calculate and Set Gains (‘Z’) command to specify the channels to be
affected by the command in a multi-range unit. If the application of a specific span pressure
exceeds the proof pressure rating of any other transducer contained within the same scanner, the
calibration pressures must be applied to the RUN side pneumatic input ports. Since the calibration
command (‘Z’) has a channel selection bit map parameter allowing it to calibrate only the desired
pressure channels, the RUN port is a viable option for supplying the calibration pressures. This also
applies to Models 9021 and 9022, which assumes an upscale pressure is already applied to its
transducer being adjusted.

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

4.3.2. Span Calibration Summary
Following is a simple, step-by-step procedure for executing a “full scale” span calibration of a 9016,
9021, or 9022 Intelligent Pressure Scanner. For Models 9021 and 9022, skip the steps that
manipulate valves, as denoted with a double asterisk (**). It is assumed that all channels in the unit
are of the same full scale pressure range. Optional commands are shown within brackets [ ].
Description

9016 Command

Ensure that valves are in RUN/CAL mode (default).

9021/9022
Command

[w1200]

… normal data acquisition
Perform Re-zero calibration

See Section 4.2.2

Place the module calibration manifolds into the CAL
position if this is the desired pressure application input.
The RUN position may be a better choice for modules
with transducers having different ranges.

[w0C01] for CAL
**
[w0C00] for RUN

Apply exact full scale pressure to appropriate module
CAL and CAL REF inputs [or optionally to RUN
inputs].
Delay for settling of pneumatic inputs
Verify that measured data reads near expected full scale

[rFFFF0]

[r0FFF0]

Instruct module to calculate new gain coefficients for all
16 channels

ZFFFF

Z0FFF

Place calibration manifold back into the RUN position

w0C00

Store new gain coefficients to transducer non-volatile
memory

**
w09

… continue normal data acquisition

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

Following is a simple, step-by-step procedure for executing a specified-value span calibration of
a 9016, 9021, or 9022 Intelligent Pressure Scanner. For Models 9021/9022, skip the steps that
manipulate valves as denoted by the double asterisk (**). For the purposes of this example, it will
be assumed that an upscale pressure of 14.9800 psi is available from a dead weight tester for the
calibration of 15 psi internal transducers. All sixteen channels are 15 psi full scale.
Description
Ensure that valves are in RUN/CAL mode
(default)

9016 Command

9021/9022 Command

[w1200]

… normal data acquisition
Perform Re-zero calibration first
Place the module calibration manifolds into
the CAL position if this is the desired
pressure application input. The RUN position
may be a better choice for modules with
transducers having different ranges.

See Section 4.2.2
[w0C01] for
CAL
**
[w0C00] for
RUN

With a deadweight tester, apply 14.9800psi
to the appropriate module CAL and CAL
REF inputs [or optionally to RUN inputs]
Delay for settling of pneumatic inputs
Verify measured data reads near expected full
scale

[rFFFF0]

[r0FFF0]

Instruct module to calculate new gain
coefficients for all 16 channels

ZFFFF 14.98

Z0FFF 14.98

Place calibration manifold back into the RUN
position

w0C00

Store new gain coefficients to transducer nonvolatile memory

**
w09

… continue normal data acquisition

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

4.4 Integrated Multi-Point Calibration Adjustment
NetScanner™ System Intelligent Pressure Scanners may have their accuracy enhanced by regular
application of one or both of the individual Re-zero and Span calibration adjustment functions
already described in Sections 4.2 and 4.3. For users who have installed scanner firmware version
2.24 or later, an integrated and more comprehensive Multi-Point Calibration function may be
used instead to adjust the same offset and gain coefficients for a module’s channels. This function
also provides for supplying additional calibration points, which is particularly useful when it is
desired to fit the adjustment data to the entire negative and positive range of the module. This
integrated calibration adjustment function is fully described in this section. It is implemented by
four (4) sub-commands of the ‘C’ command. Since this function combines the functions of the Rezero and Span calibration adjustments (using the ‘h’ and ‘Z’ commands) it is recommended that
you read the information of Section 4.2 and 4.3 before attempting to perform this multi-point
calibration.
It is recommended that a Multi-Point Calibration adjustment be performed whenever new
transducers are installed in your module. In such cases, the new zero and gain coefficients that
result should always be restored into the transducer’s non-volatile memory afterwards. In some
cases, the user’s application may not require such a comprehensive adjustment as the other factorydetermined pressure/temperature coefficients (stored permanently inside each transducer) are
extremely stable. Only an occasional Re-zero adjustment may be all that is necessary.
When instructed to execute a particular sequence of sub-commands of the Configure Multi-Point
Calibration (‘C’) command, the module will perform the various stages of the Multi-Point
Calibration adjustment calibration function, and then update both the offset and gain coefficients
in the module’s volatile (e.g., RAM) memory. The module will use this newly calculated data term
for all subsequent engineering-unit calculations.
NOTE: When using the Configure/Control Multi-Point Calibration (‘C’) command,
only the local variables in the module’s volatile main memory (RAM) are changed.
Refer to Section 4.6 if it is desired to also store these new offset and gain coefficients
in transducer non-volatile memory.

4.4.1. Multi-Point Calibration Valve Control
Before executing a Multi-Point Calibration adjustment (using various forms of the
Configure/Control Multi-Point Calibration (‘C’) command), Model 9016 modules should have
their calibration valve placed in the proper position. For modules with only one common pressure
range for its transducers, the CAL position should be used since the span calibration pressure can
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NetScanner™ System (9016, 9021, & 9022) User’s Manual

be applied between the CAL and CAL REF ports (see Section 4.3.1 for more information on these
ports). Since the module will not attempt to shift this valve automatically, as it does for Re-zero
adjustment, it should be placed in the desired position manually with the Set Operating Options
(‘w’) command (option indexes = 0C and 12). This is illustrated in the example of the next section.
When multi-point calibrating Model 9016 modules with multiple ranges installed, the CAL port
may be used to apply pressure to all transducers only if the specified proof pressure is not
exceeded on any channel. If the application of a specific span pressure exceeds the proof pressure
rating of any other transducer contained within the same scanner, the calibration pressures must be
applied to the RUN side pneumatic input ports. Since the calibration command (‘C’) has a channel
selection bit map parameter allowing it to calibrate only the desired pressure channels, the RUN
port is a viable option for supplying the calibration pressures.

4.4.2 Multi-Point Calibration Summary
Following is a simple step-by-step procedure for executing a “multi-point” calibration of a 9016,
9021, or 9022 Intelligent Pressure Scanner. For Models 9021 and 9022, skip the steps that
manipulate valves as denoted by the double asterisk (**). It is assumed that all channels in the unit
have the same full-scale pressure range. Optional commands are shown within brackets [ ]. Should
it become necessary to abandon this calibration procedure once it is started, you may execute the
Abort sub-command [‘C 03'] of ‘C’ at any time after the first ‘C’ sub-command.
Description

9016
Command

Ensure that valves in RUN/CAL mode (default).

[w1200]

9021/9022
Command
**

… normal data acquisition assumed to be running
Place the module calibration manifolds into the CAL
position if this is the desired pressure application input.

[w0C01]
for CAL
**

The RUN position may be a better choice for modules
with transducers having different ranges.

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[w0C00]
for RUN

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Ready the module for multi-point calibration by
executing the Configure & Start (‘00’) sub-command of
‘C’. This establishes all the channels to be affected, and
determines the total number of calibration points that
will be supplied (3 in this example) in later steps. It also
starts module averaging for calibration (64 samples in
this example). The linear fit (1) is required.

C 00 FFFF 3 1 64 (9016)
or
C 00 0FFF 3 1 64 (9021/9022)

Apply 1st calibration pressure to the module’s CAL or
RUN inputs. The zero (0.0) point is assumed in this case.
After applying zero pressure verify that this pressure is
measured correctly by the module.

[rFFFF0]

When the data are stable, enter the Collect Data (‘01’)
sub-command of ‘C’ specifying this first calibration
point (1) with zero pressure (0.0).

[r0FFF0]
C 01 1 0.0

Apply 2nd calibration pressure to the module’s CAL or
RUN inputs. A full-scale (+5 psi) point is assumed in
this case.
Verify that pressure reads correctly.

[rFFFF0]

When the data are stable, enter another Collect Data
(‘01’) sub-command of ‘C’ specifying this second
calibration point (2) with 5.0 psi pressure.

[r0FFF0]
C 01 2 5.0

Apply 3rd calibration pressure to the module’s CAL or
RUN inputs. A mid-scale negative (-2.5 psi) point is
assumed in this case. A vacuum pump is normally
required to achieve such a pressure with 903x calibrators.
Verify that measured pressure reads correctly.
When the data are stable, enter last Collect Data (‘01’)
sub-command of ‘C’ for this point (3) with a negative
(-2.5 psi) pressure.
Now that data have been collected for every point
originally specified, calculate and apply the new
coefficient data with a Calculate and Apply (‘02’) subcommand of ‘C’. This also restores the module to using
its original averaging parameters that existed before the
first ‘C’ command.
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[rFFFF0]

[r0FFF0]
C 01 3 -2.5

C 02

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Place calibration manifold back into the RUN position, if
the CAL position was used.
Store new offset and gain coefficients into transducer
non-volatile memory.

[w0C00]

**
w08
w09

… continue normal data acquisition.

4.5 9021/9022 Analog Calibration
Both the standard 9021 and the 9022 modules are used to make absolute analog measurements from
either the PSI 9400 transducers or third party analog output transducers. In order to maintain the
highest level of analog accuracy, the 9021/9022 is designed to allow its firmware to perform
automatic software calibration of the analog interface circuitry. This automatic, firmware controlled
calibration function minimizes analog offset and gain errors for each of the twelve 9021/9022 input
channels. This auto-calibration function reduces analog measurement errors resulting from long
term or thermally induced component drift. Unless disabled through software commands to the
9021/9022, this software calibration function will be constantly performed by the 9021/9022
firmware, therefore maintaining consistent measurement accuracy within the 9021/9022. In
order to perform this software calibration function, the 9021/9022 contains one internal voltage
reference network. This internal calibration standard is designed to provide excellent long term and
thermal stability. This use of a common reference network reduces user or factory calibration of
the 9021/9022 to a simple calibration of this one internal reference network. The following
procedures describe the methods for verifying analog measurement accuracy and for calibrating this
internal reference in order to maintain optimum accuracy through the 9021/9022.
NOTE:

When using the 9021/9022 with digitally compensated PSI Model 9400
transducers, the span calibration functions (for the 9400 transducers) can
serve as a method to correct both 9400 and internal 9021/9022
measurement accuracies. Periodic use of this span calibration function
can eliminate the need for the described voltage reference calibration
when using the 9021/9022 with digitally compensated Model 9400
transducers.

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4.5.1 Setup
The calibration and verification function will require the application of precise voltage sources to
the pressure voltage input pins of the 9021 and 9022 transducer interface connectors. Application
of this voltage may be made through any one of the twelve 9021 and 9022 interface connectors
although more complete verifications of performance will require applying these voltages to all
twelve input connectors. Figure 4.5 shows proper voltage input connections. (For optional
calibration of the temperature voltage input (9022 only), connect the (+) output of the precision
voltage source to pin D instead of pin B.)

Figure 4.5
9021 and 9022 Voltage Input Connections

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

4.5.2 Calibration Procedure
The calibration procedures may be summarized as follows:
1. Set all 9021/9022 channels for the desired gain (1, 20, 45, or 90).
(9022 temperature voltage input gain is fixed at gain = 1)
2. Apply a known upscale or full scale voltage to the 9021/9022.
3. Measure the applied voltage through the 9021/9022.
4. Calculate the 9021/9022 measurement error as a ratio of applied voltage.
5. Adjust the current reference network coefficient by the observed measurement error ratio.
6. Store the new coefficients to non-volatile 9021/9022 memory.

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The above process is repeated for each of the four (4) 9021/9022 gain settings (or selected gain
settings as needed for your application).
Calculation of the new reference coefficient is performed as follows:
CoefOld = current reference coefficient value
CoefNew = new/corrected coefficient value
Vapplied = actual applied test voltage
V9021 = reported voltage measured by the 9021/9022
CoefNew = CoefOld * [1 + (Vapplied - V9021) ÷ Vapplied]
Example:
CoefOld:

9021/9022 Gain=1 current reference coefficient is 0.9800

Vapplied:

4.004 VDC is applied to 9021/9022 channel 1 from a precision voltage
source

V9021:

9021/9022 reports 3.965 V measured at channel 1

CoefNew = 0.9800 * [1 + 4.004 - 3.965) ÷ 4.004]
CoefNew = 0.98955

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

A detailed step-by-step procedure follows that includes the specific 9021/9022 commands to be sent
to the module under test.
DESCRIPTION

9021/9022 COMMAND

Set AD averaging to 32 to minimize reading jitter

w1020

Turn off front-end calibration function (9022 ONLY)

w2200 00

Set all channels to gain of 1 (or 20, 45, 90)1

w1500
(or w150 1, w 150 2, or w1503 for gain of 20,45, or 90)

Read current G=1 reference coefficient from
9021/9022 in ASCII floating point format2

u01104
(u01 18 fo r 9022 tempe rature reference co efficient)

Apply 4.5 00 V DC to 90 21/9 022 chann el 1

Read mea sured voltage from channel 1 in ASCII
floating point (data format 0)

r00010
(t00010 for temperature voltage)

Calculate difference between actual applied voltage
and 9021 /9022 reported vo ltage

Download new reference coefficient for G=1 in ASCII
floating point format 3

v0110 4 x.xxxx (x.xxxx is new coefficient)
(v01118 x.xxxx for 9022 temperature reference
coefficient)

Store coefficient to 9021/902 2 FLAS H mem ory

w07

Reboot module to force new coefficients to take effect
1

The gain control commands for the 9021/9022 are summarized in the following table:
Gain

9021/9022
Command

w1500

w1501

w1502

w1503

Commands to read the respective gain coefficient commands are summarized in the following
table.

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The example command structure will return the requested coefficient in ASCII floating point
format.
Reference
Coefficient

9021/9022
Command

for gain = 1

u01104

for gain = 20

u01105

for gain = 45

u01106

for gain = 90

u01107

for temperature

u01118

Commands to write the respective gain coefficient commands are summarized in the following
table. The example command structure will provide the new coefficient, shown as x.xxxx in ASCII
floating point format.
Reference
Coefficient

9021/9022
Command

for gain = 1

v0110 4 x.xxxx

for gain = 20

v0110 5 x.xxxx

for gain = 45

v0110 6 x.xxxx

for gain = 90

v0110 7 x.xxxx

for temperature

V01 18 x.xxxx

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4.6

NetScanner™ System (9016, 9021, & 9022) User’s Manual

Coefficient Storage

The various calibration functions described in Sections 4.2 through 4.4 update the active offset and
gain coefficients, respectively, in the module’s volatile main memory (RAM) only. These newer
calibration coefficients will be lost when instrument power is turned off. The Set/Do Operating
Options (‘w’) command may be used to also store these coefficients back in each transducer’s
nonvolatile memory. This command’s option index = 08 will store new offset coefficients, while
its option index = 09 will store new gain coefficients.
A user may read (and should verify) any new offset and/or gain coefficients after performing each
calibration adjustment command (i.e., by saving coefficient data returned in a command ‘h’ or ‘Z’
response), or the Read Internal Coefficients (‘u’) command may be used to read them any time
after calibration adjustment commands have been performed (see coefficient indexes cc=00 and 01
for arrays aa=01 through 10). These “adjusted” coefficients may be verified, and then saved by
storing them in each transducer’s non-volatile memory with the ‘w’ command described above.
Alternately, they may be verified and stored on the host computer’s secondary storage, and later
restored (if necessary) with the Download Internal Coefficients (‘v’) command (same
array/coefficient indexes as ‘u’).

4.7 Non-volatile Parameter Storage for “non-Digitally
Compensated” Pressure Sensors (9021/9022 ONLY)
4.7.1
This section describes the capability to download and store parameters to NetScanner System
9021 and 9022 modules for use in calibrating and/or identifying sensors that do not conform to the
serial data storage and retrieval format of digitally compensated PSI 9400 sensors. When using
other than digitally compensated 9400 sensors, two alternative methods are available to allow for
non-volatile storage of key parameters for sensors attached to a 9021 or 9022. The first method
applies when using a non-digitally compensated 9400 sensor without non-volatile memory or when
using a third party sensor. This method provides the capability to calibrate sensor measurements
on the NetScanner™ System module even though the sensor itself does not have the ability to store
parameter data.
Commands that “download” parameters write the value into volatile memory in the module. This
volatile copy of the parameter is not actually copied into non-volatile memory until the ‘w07’
command is issued. This provides the capability to test new parameters before committing them
to non-volatile memory. It is important to note that the ‘w07’ command stores the entire block of
non-volatile parameters for the module. The second method applies when using a non-digitally
compensated 9400 sensor that has non-volatile memory.
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As part of module initialization, all channels are automatically checked for attached PSI 9400
sensors. If a digitally compensated 9400 sensor is attached, its parameters are uploaded to the
module and used for calibrating the sensor. If a non-digitally compensated 9400 sensor is attached
but is equipped with non-volatile memory (EEPROM) and responds properly to the 9021/9022
module query, it’s parameters are uploaded and used for calibrating the sensor. If a 9400 sensor is
not detected, the module will look to see if the module has been configured to utilize the userprovided parameters out of scanner non-volatile memory. If configured to do so, the module will
use the parameters stored for the channel in scanner non-volatile memory. Otherwise factory
default parameters will be used, resulting in the 9021/9022 modules returning EU (engineering
units) in terms of measured volts.
The following procedures describe methods for storing various parameters into both volatile and
non-volatile memories of 9021/9022 Intelligent Pressure Scanners.

4.7.2

Download calibration parameters into volatile memory
4.7.2.1

For Non-digitally Compensated 9400 Sensors Without Non-volatile
Memory or Non-9400 Sensors
Sensor offset and gain terms are downloaded into volatile memory using
the ‘v’ command with coefficient index numbers 00 and 01 respectively for
the selected channel. c0 through c3 coefficients are downloaded into
volatile memory using the ‘v’ command with coefficient index numbers 02
through 05 respectively.
Front-end gain select is downloaded into volatile memory using the ‘v’
command with coefficient index (cc) 4D. (See NetScanner System
(9016, 9021, & 9022) User’s Manual, Chapter 3, Download Internal
Coefficients (Command ‘v’)). Data for this index selects the front-end gain
for the module as follows: 0=unity, 1=20, 2=45, 3=90. Example: ‘v0014d
2’ sets front-end gain for the first transducer to 45. This parameter can be
retrieved from the module using the ‘u’ command with coefficient index 4D.

4.7.2.2 For Non-digitally Compensated 9400 Sensors With Non-volatile Memory
For non-digitally compensated 9400 sensors with non-volatile memory, the
same commands as for non-9400 “generic” (third party sensors) apply.

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4.7.3

NetScanner™ System (9016, 9021, & 9022) User’s Manual

Download other parameters into volatile memory
4.7.3.1 For Non-digitally Compensated 9400 Sensors Without Non-volatile Memory
or Non-9400 Sensors
A user-defined date can be downloaded into volatile memory using the ‘v’
command with coefficient index 07. A manufacturing reference or serial
number can be downloaded into volatile memory using the ‘v’ command
with coefficient index 09 (format=5). A transducer full-scale range code can
be downloaded into volatile memory using the ‘v’ command with coefficient
index 0A. User-defined range codes can be assigned to values 128 and up
(format=5). (See User’s Manual, Appendix E for standard Range Codes.)
4.7.3.2 For Non-digitally Compensated 9400 Sensors With Non-volatile Memory
For non-digitally compensated 9400 sensors with non-volatile memory, the
same commands apply as for non-9400 “generic” (third party) sensors. The
difference is that for non-digitally compensated 9400 sensors, upon
command, parameters are immediately stored into the sensor’s non-volatile
memory.

4.7.4

Set parameters to factory defaults
4.7.4.1 For Non-digitally Compensated 9400 Sensors Without Non-volatile Memory
or Non-9400 Sensors
All of the above parameters can be set to factory defaults using the ‘w’
command with index 25. For each third-party type sensor attached, this
command sets the volatile copy of each parameter back to the factory default
value as follows:
Offset term = 0.0
Gain term = 1.0
c0 = 0.0
c1 = 1.0
c2 = 0.0
c3 = 0.0
user-defined date = 0
manufacturing reference number = 0
full-scale range code = 0
front end gain = 0 (unity).

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Note: It is important to remember that this command, like the download
commands, only affects the volatile copy of parameter data. This volatile
copy of parameter data is not actually copied into non-volatile memory until
the ‘w07’ command is issued.
4.7.4.2 For Non-digitally Compensated 9400 Sensors With Non-volatile Memory
For a non-digitally compensated 9400 sensor with non-volatile memory, the
‘w25’ command applies the same as for non-9400 sensors as far as the
volatile copy of parameter data is concerned. To write parameters into nonvolatile memory, the ‘w08,’ ‘w09,’ and ‘w27’ commands must be used as
described in Section 4.7.6 “Store Parameters Into Non-volatile Memory.”
4.7.5

Configure reset initialization
4.7.5.1 For Non-digitally Compensated 9400 Sensors Without Non-volatile Memory
or Non-9400 Sensors
The module can be configured to retrieve the user-provided parameters out
of non-volatile memory during reset initialization by using the ‘w’ command
with index number 26 and dd=01. If the ‘w26’ command is issued with
dd=00, the factory default parameters will be used, and any user
parameters previously stored in non-volatile memory will be ignored. It is
important to remember that this command only modifies the volatile copy
of this configuration parameter. The configuration parameter is not actually
copied into non-volatile memory until the ‘w07’ command is issued. For
example, to configure the module to retrieve user parameters from nonvolatile memory for third-party sensors during reset initialization, issue
command ‘w2601’ followed by ‘w07.’ (See User’s Manual, Chapter 3,
Set/Do Operating Options (Command ‘w’)). The factory default for this
configuration parameter is for the module to use the user-provided
parameters out of non-volatile memory during reset initialization. The user
parameters are set to the factory default values at time of module
manufacture.

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4.7.5.2 For Non-digitally Compensated 9400 Sensors With Non-volatile Memory
Non-digitally compensated 9400 sensors with non-volatile memory are not
affected by the ‘w26’ command. The module will always use sensor
EEPROM data, if available.
4.7.6

Store parameters into non-volatile memory
4.7.6.1 For Non-digitally Compensated 9400 Sensors Without Non-volatile Memory
or Non-9400 Sensors
All of the above commands download data into volatile memory. If the
module is reset, the effects of the commands will be lost unless the ‘w07’
command is issued prior to module reset. The ‘w07’ command is used to
copy all of the parameters from volatile to non-volatile memory.
4.7.6.2 For Non-digitally Compensated 9400 Sensors With Non-volatile Memory
Non-digitally compensated 9400 sensors with non-volatile memory are not
affected by the ‘w07’ command. Sensor offset and gain terms are
downloaded into sensor non-volatile memory using ‘w08’ and ‘w09’
commands, respectively. Coefficients c0 through c3 are downloaded into
sensor non-volatile memory using the ‘w27’ command. The ‘w27’
command can use an optional position field to make the action channelspecific. For example, ‘w2700 0801’ will perform the download for
channels 12 and 1.
User-defined data, manufacturing reference number, full-scale range code,
and front-end gain are downloaded immediately into sensor non-volatile
memory as a result of the ‘v’ command (together with the associated index
number for each parameter).

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

4.8 Line Pressure Precautions
When operating 9016 pressure scanners at elevated line or reference pressures, care must be taken
when any command is issued that may result in shifting of the calibration valve. The user must
ensure that any valve shifts will not result in the internal DH200 transducers being exposed to
pressure transients that may exceed the proof pressure rating of the transducer. This is especially
important when operating at elevated reference pressures as a shift to the CAL position may result
in a rapid pressure change if the CAL/CAL REF pressure varies greatly from the measurement
reference pressure.

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

Chapter 5
Service
5.1 Maintenance
This section provides a detailed step-by-step guide for performing repair and maintenance of typical
NetScanner™ System Intelligent Pressure Scanners. The method for upgrading module firmware
is also presented in Section 5.2.
Figure 5.1 is an exploded view of the Model 9016 and 9022. Please refer to these drawings for an
understanding of the construction of Intelligent Pressure Scanners models. Figures 5.1a, 5.1b, and
5.1c depict the 9016, 9021 and 9022 top plates.

Figure 5.1
Exploded View of 9016 and 9022

5-1

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NOTE:

NetScanner™ System (9016, 9021, & 9022) User’s Manual

It must be emphasized that printed circuit boards in 9016, 9021, and
9022 modules are field replaceable, but are NOT field repairable.

Figure 5.1a
9016 Top Plate

Figure 5.1b
9021 Top Plate
(prior to S/N 999)

5-2

Figure 5.1c
9022 Top Plate
(S/N 1000+)

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

Table 5.1 provides a convenient cross reference summary of the components found in each
Intelligent Pressure Scanner. This may be used as a guide to identify the appropriate component
replacement sections in this chapter.
Table 5.1
Component Cross Reference
Component

Section

9016

9021

9022

PC -280 Microp rocessor P CB Assem bly

5.1.3 .3

PC -206 Amplifier/M UX PC B A ssemb ly

5.1.3 .1

PC -242 Amplifier/M UX PC B A ssemb ly

5.1.3 .2

Interna l Pneumatic Calib ration M anifold

5.1.6

Internal Solenoid Valves

5.1.5

Internal DH-200 Transducer

5.1.4

PC-315 Connector Interface PCB

5.1.3 .4

PC-316 or PC 33 9 Signal Conditioning
PCB

5.1.3 .4

PC-317 MUX PCB

5.1.3 .4

5.1.1 Common Maintenance
The NetScanner™ System Intelligent Pressure Scanners are designed for rugged use. No special
preventive maintenance is required, although periodic maintenance may be required to replace worn
or damaged components. Upgrades or modifications of module hardware or firmware may also be
periodically required. For users who wish to do their own maintenance and repairs, maintenance kits
and replacement parts for each model may be purchased from the factory.

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When performing any type of maintenance of NetScanner™ System components, the
following guidelines and precautions should always be followed:
!

Verify that the work area and technicians are properly grounded to prevent damage to
electronic components due to electrostatic discharge.

Ensure that all electrical and pneumatic connections have been removed from the
module.

Ensure that the work area is free of dust and other possible contaminants that may
affect the high tolerance machined parts (and pneumatic seals, if model has an integral
manifold).

Care must be taken to prevent contaminants from reaching O-ring surfaces. If O-ring
surfaces require cleaning, use a lint-free applicator with acetone to remove dirt and
lightly lubricate the O-ring surface with Krytox® provided in the maintenance kit.

Never use sharp objects to cut tubing from the bulged tubes. The tiny scratches left on
the tubes could cause leaks.

In the process of performing general maintenance on a module and in printed-circuit board
replacement, the following tools may be required:
!
!
!
!
!
!
!

NOTE: PSI offers an optional
3/32" and 5/64" Allen-head screwdrivers,
maintenance kit (PSI P/N
a 3/16" hex wrench,
S901-0200000000) with the
a needle nose tweezers,
lubricants included.
a Phillips-head screwdriver,
a small adjustable wrench,
a tube of Krytox® lubricant (PSI P/N 42-06-KRYX),
a spray bottle of silicone liquid lubricant (PSI P/N 41-06-Silicone).

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

5.1.2 Module Disassembly
The following procedure should be used to disassemble any model prior to any maintenance:
(1) Place the scanner with its external connectors facing up. With one hand holding the module
housing, remove all screws securing the top plate to the module housing. These are located around
the outer edge of the top panel of the module housing. For 9021 scanners these will be six (6) 4-40
Allen-head screws which require a 3/32" Allen driver (for 9022 scanners, there are twelve (12)
Phillips-head screws). The 9016 uses twelve (12) Phillips head screws around the top plate outside
perimeter.
(2) When all screws have been removed, gently lift the top panel and attached electronics up and
out of the housing. All components of the pressure scanner are attached to the top plate and will lift
out of the module housing when the top plate is removed. See Figure 5.2 and 5.2a. Carefully
remove the Viton gasket with the module top plate. In some cases, it may be easier to hold the top
plate and turn the module over, lifting the housing off the top panel.

Figure 5.2a
9022 Scanner Out of Housing

Figure 5.2
9016 Scanner Out of Housing

5.1.3

Electronic Circuit Board Replacement

Different models of the NetScanner™ System Intelligent Pressure Scanner use different
combinations of the six (6) basic circuit boards described below. To the right of each section title
are the modules that contain the particular circuit board assembly. Also refer to the cross reference
in Table 5.1 for a summary of applicable components in each Intelligent Pressure Scanner.

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

5.1.3.1 PC-206 Amplifier/Multiplexer Board (9016)
The following procedures should be used for replacement of the PC-206 Amplifier/Multiplexer
Board. Use the tools and follow the general precautions described in Section 5.1.1.
(1)

Disassemble the module as described in Section 5.1.2. Carefully remove the wiring harness
from connector P1 of the PC-206 board. Note the orientation of the PC-206 relative to the
rest of the module to ensure the new PC-206 is installed in the same position.

(2)

Remove the two (2) Phillips-head screws securing the PC-206 board to the DH200
transducers. Carefully disconnect the PC-206 board from the DH200s by slowly working
the board off; starting at one end and moving down the length of the board. It is important
that the gold pins are not bent when removing the board.

(3)

Replace the old PC-206 board with a new one by placing it loosely on top of the DH200s.
Ensure the board end containing connector P1 is oriented the same as the board just removed.
Inspect and make sure that all the gold pins fit easily into the female end of the connector on
the DH200 transducers. Press the board down evenly until all pins are firmly seated.

(4)

Install the two (2) Phillips-head screws to secure the PC-206 to the DH200s. Be careful not
to over-tighten. Install the wiring harness to connector P1 of the PC-206, ensuring proper
pin 1 location. (Pin 1 of the ribbon cable has a red stripe while pin one of P1 will
contain a square solder pad on the PC-206.)

(5)

Carefully align the gasket on the top plate, ensuring it is free of contaminants. Re-install the
module electronics into the extrusion case. Ensure that the alignment posts in the module's
bottom panel align with the PC-203 or PC-280 electronics support brackets when placing the
top panel and electronics back into the housing.

(6)

Replace the screws that secure the top panel to the scanner housing and tighten. Do not overtighten; 7-9 inch-pounds torque should be sufficient.

(7)

Test your scanner to ensure proper operation.

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5.1.3.2 PC-242 Amplifier/Multiplexer Board (9021 ONLY)
The following procedures should be used for replacement of the PC-242 Amplifier/Multiplexer
Board. The PC-242 is attached directly to the top plate of the 9021. Use the tools and follow the
general warnings already described at the start of Section 5.1.
(1)

Disassemble the module as described in Section 5.1.2. Carefully remove the wiring harness
from connector P1 of the PC-242 board.

(2)

Remove the screws fastening the PC-242 board to the top panel and remove the board
assembly. For the 9021 (with D-shell top plate connectors), this will consist of two (2)
standoff screws attached to each top plate D-shell connector (for a total of 24 hex standoffs).

(3)

Install the new PC-242 board by aligning the twelve interface connectors on the board with
the cutouts on the top panel.

(4)

Reinstall the hardware that secures the PC-242 to the top panel. Install the wiring harness
to connector P1 of the PC-242, ensuring proper pin 1 location. (Pin 1 of the ribbon cable
has a red stripe while pin one of P1 will contain a square solder pad on the PC-206.)

(5)

Install the module electronics into the housing. Ensure that the alignment posts in the
module's bottom panel align with the PC-203 or PC-280 electronics support brackets when
placing the top panel and electronics back in the housing.

(6)

Replace the six (6) Allen-head screws that secure the top panel to the scanner housing and
tighten. Do not over-tighten; 7-9 inch-pounds should be sufficient.

(7)

Test your scanner to ensure proper operation.

5.1.3.3 PC-280 Ethernet Microprocessor/A-D Board (9016, 9021, 9022)
The following procedures should be used for replacement of the PC-280 Ethernet
Microprocessor/A-D Board. Use the tools and follow the general warnings already described in
Section 5.1.1.
(1)

Disassemble the module as described in Section 5.1.2.

(2)

Carefully remove any attached wiring harnesses from connectors P1, P3, and P6 of the
PC-280 board. In the 9016, this will require cutting one nylon tie-wrap attached to the
center mounting bracket.

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(3)

NetScanner™ System (9016, 9021, & 9022) User’s Manual

Remove the three (3) 2-56 Phillips head screws securing the PC-280 mounting brackets
to the top plate. These screws will be in line with the PC-280 LEDs that protrude through
the top plate. Carefully lift the board out of the top panel. See Figure 5.3.

Figure 5.3
PC-280 Board
(4)

Using the Phillips-head screwdriver, remove the three (3) PC-280 mounting brackets
from the old circuit board and reinstall them on the new circuit board. Ensure that the
mounting brackets are installed so that the clearance areas machined into the
mounting brackets are towards the PCB assembly. This will prevent electrical shorts
between the mounting bracket and electrical traces on the PCB.

(5)

Place the new PC-280 board so that its connectors and LEDS protrude through the top
panel. Loosely install the three (3) 2-56 screws to secure the PC-280 mounting brackets
to the top panel. (To ease reassembly, they will be tightened after installing the
electronics back into the module case.)

(6)

Reinstall any previously installed wiring harnesses on connectors P1, P3, and P6 of the
PC-280 board. Ensure proper pin 1 orientation when installing these connectors.
(Pin 1 of the ribbon cable has a red stripe while pin one of P1 will contain a square
solder pad on the PC-206.)

(7)

Install the module electronics into the housing, ensuring that the alignment posts in the
module's bottom panel align with the holes in the PC-280 mounting brackets. Ensure that
there are no conductors from the P1 harness pinched between the top plate and the
housing. Ensure that the top plate gasket is properly installed. Install the screws that
secure the top panel to the housing. Tighten the three (3) screws attached to the PC-280
mounting brackets.

(8)

Test your scanner to ensure proper operation.
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5.1.3.4 PC-315 Connector Interface Board, PC-316 or PC 339 Signal Conditioning PCB,
and PC-317 Multiplexer PCB (9022)
The following procedures should be used for replacement of the PC-315, PC-316, or PC-317
PC-316 Board
boards. Use the tools and follow the general warnings already described in
Section 5.1.1.

Figure 5.3a
9022 PCBs Outside the Housing

Figure 5.3b
9022 PCBs Apart
(1)

Disassemble the module as described in Section 5.1.2.

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

(2)

Notice from the above figures (Figure 5.3a and 5.3b) that the three PC boards (315, 316
or 339, and 317) are held together by standoffs and gold connector pins. If there is a need
to take the boards apart, ensure that the gold connector pins do not get bent.

(3)

Carefully remove the ribbon connection from the PC-317 to the PC-280 Microprocessor
board. Remove the six (6) 4-40 Phillips-head screws from the standoffs. Gently remove
the PC-317 board by pulling straight up on the gold connector pins. If the PC-317
multiplexer board is suspected of malfunctioning, it must be returned to the factory, since
there are no field replaceable parts on the board.

(4)

Unscrew the standoffs between the PC-316 (or PC-339) and PC-315 boards and gently
remove the PC-316 (or PC-339) board by pulling straight up on the gold connector pins.
If the PC-316 (or PC-339) Signal Conditioning board is suspected of malfunctioning, it
must be returned to the factory, since there are no field replaceable parts on the board.

(5)

The PC-315 Connector Interface board is soldered to the top plate and cannot be removed
in the field. If the PC-315 board is suspected of malfunctioning, the entire top plate must
be returned to the factory.

(6)

After replacing malfunctioning printed circuit boards, reassemble the module in reverse
order from that used in taking it apart. Ensure the ribbon connection from the PC-317
board to the PC-280 Microprocessor board is connected properly and that it is not
crimped. Pin 1 of the ribbon cable has a red stripe while pin 1 on the PC-280
connector will contain a square solder pad.

(7)

Carefully replace the Viton gasket around the top plate and replace the twelve (12)
Phillips-head screws that secure the top plate to the scanner housing. Tighten the screws.
Do not over-tighten; 7-9 inch-pounds should be sufficient.

(8)

Test your scanner to ensure proper operation.

5.1.4 Replacement of Transducers
Model 9016 has internal DH200 pneumatic transducers, as well as an internal calibration
manifold with associated valves and O-rings. All these elements occasionally require service or
replacement as described in the following sections.
Following is a step-by-step procedure to replace a DH200 transducer in a Model 9016 Intelligent
Pressure Scanner. Use the tools and follow the general warnings already described in Section
5.1.1.

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Figure 5.4
Top View of DH200
NOTE: The hex-head standoff screws used on DH200 positions 2 and 15 are used to
secure the PC-206. These hex-head screws should not be over-tightened or else the
screw may break. (Recommended 40 inch-ounces for all DH200 screws)

(1)

Disassemble the module as described in Section 5.1.2.

(2)

Remove the PC-206 Amplifier/Multiplexer board as described in Section 5.1.3.1. Lay
the circuit board aside on an anti-static surface.

(3)

Remove the retaining screw from the desired DH200 transducer. Lift the transducer
straight up to remove it. Make sure that the two (2) O-rings remain with the transducer as
it is removed from the adapter plate. Ensure that the adapter plate O-ring sealing surface
is clean and free of contaminants. See Figure 5.4 (above).

(4)

Replace the DH200, making sure that the electrical connections are located on the outer
edge of the cubic design. Be sure that the two (2) O-rings are in place on the DH200 and
that O-ring surfaces are free of contaminants. The DH200 must fit the guiding pins
smoothly and be aligned with all other DH200 transducers. Tighten the retaining screw
to 40 inch-ounces ±5 inch-ounces of torque.

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(5)

Replace the PC-206 board as described in Section 5.1.3.1 and reassemble the module.
Ensure that the two hex-head standoff screws are installed on DH200 positions 2 and 15
and that they align with the two PC-206 mounting holes.

(6)

Test your scanner to ensure proper operation.

5.1.5 Calibration Valve Solenoid Replacement
Following is a step-by-step procedure to replace the Calibration Valve Solenoids in a Model
9016 Intelligent Pressure Scanner. All Model 9016 scanners contain the purge and leak check
calibration manifold and contain two solenoid valves. Use the tools and follow the general
warnings already described at the start of Section 5.1.1. Refer to Section 5.1.6.5 for details
concerning solenoid O-ring replacement.
(1)

Disassemble the module as described in Section 5.1.2.

(2)

Carefully remove the two (2) Phillips-head screws from the top of the solenoid.
Disconnect the solenoid from connector P6 of the PC-280 CPU board. See Figure 5.5.

(3)

If the either the new or old solenoid does not have a pluggable wiring harness at the
solenoid, the new solenoid wires will require crimp pins to be installed for insertion in the
P6 mating housing. The proper crimp pin is Molex part number 08-56-0110. After
installing the crimp pins to the solenoid wiring, remove the old crimp pins from the
Molex P6 housing and insert the new solenoid's wiring. Ensure that the new wires are
installed in the same position as the old wires.

Figure 5.5
Solenoid in Module
(4)

Ensure the three (3) solenoid manifold O-rings are present and free of contaminants.
Replace the solenoid with the new one by carefully aligning and gently tightening the
screws.

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(5)

Attach the wiring harness to the solenoid and connector P6 of the PC-280 CPU board.

(6)

Reassemble the module.

(7)

Test your scanner to ensure proper operation.

5.1.6 Replacement of O-Rings
Pressure Systems’ calibration valves include static and dynamic O-ring seals. When used
properly, the rated durability of the dynamic O-rings is in excess of 1,000,000 shifts of the
calibration valve.
The procedures described below should be used for replacement of all the O-rings in the Model
9016 Intelligent Pressure Scanner. Use the tools and follow the general warnings already
described at the start of Section 5.1.
The material needed for the O-ring replacement can be acquired through the proper maintenance
kit available from Pressure Systems. Specifically needed for these procedures are calibration
manifold and piston O-rings, Teflon cup seals, a fast evaporating cleaning fluid ( i.e. acetone,
alcohol, Freon®, etc.), 50 psi dry air supply, and Krytox® fluorinated grease (read product
warnings and recommendations thoroughly). Service of O-ring seals requires a clean
working environment. Introduction of contaminants to the O-ring or internal calibration
manifold surfaces can result in internal pneumatic leaks. Inspection for contaminates generally
requires some type of magnification device, such as a microscope.
5.1.6.1

DH200 Pressure Transducer O-Ring Replacement

Please note that the DH200 O-rings are used for static seals only. They will typically not require
replacement unless exposed to improper liquid media (which will also damage other 9016
components). Following is a step-by-step procedure to replace a DH200 O-Ring should it be
required:
(1)

Disassemble the module as described in Section 5.1.2.

(2)

Remove the PC-206 Amplifier/Multiplexer board as described in Section 5.1.3.1. Lay
the circuit board aside on an anti-static surface.

(3)

Remove the DH200 transducer(s) as described in Section 5.1.4. If more than one DH200
is removed, it is recommended to record their serial numbers prior to removal to ensure
they are reinstalled in the same locations.

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Figure 5.6
DH200 Transducer O-Ring
Replacement
(4)

Using tweezers, remove the two (2) O-rings from the DH200. Clean the O-ring cup with
a lint-free applicator moistened with a cleaning fluid such as acetone, alcohol, Freon®, or
any other substance that evaporates quickly and leaves very little residue. Remove any
excess cleaner with the air supply as soon as possible. Do not blow air directly into the
holes of the surface since that can drive the fluid into the transducer and/or rupture the
silicon pressure transducer.

(5)

With clean hands, apply a small amount of Krytox® fluorinated grease to the palm of one
hand and rub it out evenly with your index finger. Place one new O-ring onto your
greased palm. Work the O-ring around until it is evenly greased. The O-ring should shine
when properly lubricated. There should be no white area of excess grease on the O-ring.
Make sure there is only a thin film of lubrication on the O-ring. Using your greased
finger, place the greased O-rings in the cups on the DH200. Ensure that no grease enters
the hole that leads into the transducer.

(6)

Reinstall the DH200 as described in Section 5.1.4.

(7)

Repeat steps 3, 4, 5 and 6 for each set of O-rings in need of replacement.

(8)

Replace the PC-206 board as described in Section 5.1.3.1 and reassemble the module.

(9)

Test your scanner to ensure proper operation.

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5.1.6.2

NetScanner™ System (9016, 9021, & 9022) User’s Manual

Tubing Plate O-Ring Replacement

The following is a step-by-step procedure to replace Tubing Plate O-rings in a Model 9016
Intelligent Pressure Scanner.
(1)

Disassemble the module as described in Section 5.1.2.

(2)

Place the scanner with the tubing plate on a clean, lint free surface.

(3)

Hold the top plate/calibration valve assembly with one hand, supporting the bottom
assembly to prevent dropping when all screws are removed. Remove the six (6) Allenhead screws on the top plate that secure the valve assembly to the top plate.

(4)

Carefully rotate or slide the tubing plate back and forth, pivoting on the guiding pin about
1/8" several times. This is done to loosen the O-rings from the calibration manifold. Lift
the tubing plate straight up. Do not touch the calibration manifold.

(5)

Inspect for the presence of shim washers around each of the six (6) screws. If washers are
present, retain for use during reassembly.

(6)

Remove and replace the O-rings needing maintenance, using the procedure described in
Section 5.1.6.1. Note that the O-ring seals use an additional Teflon cup seal placed on
top of the O-ring. These seals should be replaced as necessary. Note that these Teflon
seals do not require the use of Krytox® grease.

(7)

Examine the tubing plate and calibration manifold to verify that no contaminants are on
either surface. This generally requires microscopic examination. Replace the tubing plate
by slowly placing the plate on the calibration manifold. Make sure that the O-ring/cup
seal side is down toward the pneumatic sliding manifold and the guiding pin on the
calibration valve housing fits into the mating hole of the tubing plate. Also, ensure that
shim washers, if used, are installed between the tubing plate and the calibration manifold
assembly, in all six (6) locations.

(8)

Replace the six (6) Allen-head screws that pass through the top plate to secure the
calibration valve assembly. Tighten evenly, making sure that the screws are only finger
tight plus 1/8 turn. It is important not to over tighten the screws since the pneumatic seal
is made using dynamic O-rings.

(9)

Reassemble the module.

(10)

Test your scanner to ensure proper operation.

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5.1.6.3

NetScanner™ System (9016, 9021, & 9022) User’s Manual

Adapter Plate O-Ring Replacement

Following is a step-by-step procedure to replace Adapter plate O-rings in a Model 9016
Intelligent Pressure Scanner. The adapter plate is located opposite of the tubing plate on the
calibration manifold. All DH200 transducers are attached to the adapter plate.
(1)

Disassemble the module as described in Section 5.1.2.

(2)

Remove the PC-206 Amplifier/Multiplexer board as described in Section 5.1.3.1. Lay
the circuit board to the side on an anti-static surface.

(3)

Remove the six (6) 3/32" Allen-head screws that secure the adapter plate to the
calibration valve housing. To remove the two (2) center screws, you must remove the
DH200 transducers near the screws. Make sure to note the DH200 serial number and
location. The plate should be gently lifted from the calibration housing.

(4)

Carefully rotate or slide the adapter plate back and forth, pivoting on the guiding pin
about 1/8" several times. This is done to loosen the O-rings from the calibration
manifold. Lift the adapter plate straight up. Do not touch the calibration manifold.

(5)

Remove and replace the O-rings needing maintenance using the procedure described in
Section 5.1.6.1. Note that the O-ring seals use an additional Teflon cup seal placed on
top of the O-ring. These Teflon seals do not require Krytox® grease.

(6)

Examine the adapter plate and calibration valve surface to verify that no contaminants
are on either surface. This generally requires microscopic examination. Replace the
adapter plate by slowly placing the plate on the calibration manifold. Make sure that the
O-ring is down towards the pneumatic sliding manifold and the guiding pin on the
adapter plate fits into the mating hole of the calibration valve housing. Fasten the
adapter plate evenly on all sides.

(7)

Install the DH200 transducers that were previously removed. It is suggested to install
them back in their original location.

(8)

Replace the PC-206 board as described in Section 5.1.3.1 and reassemble the module.

(9)

Test your scanner to ensure proper operation.

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5.1.6.4

NetScanner™ System (9016, 9021, & 9022) User’s Manual

Calibration Manifold Piston O-Ring Replacement

Following is a step-by-step procedure to replace Calibration Manifold O-rings in a Model 9016
Intelligent Pressure Scanner. There are eight (8) pistons, each with an O-ring, inside the
calibration valve housing; one (1) on each end of the housing, and three (3) on each side of the
calibration valve itself.
(1)

Disassemble the module as described in Section 5.1.2.

(2)

Remove the PC-206 Amplifier/Multiplexer board as described in Section 5.1.3.1. Lay
the circuit board aside on an anti-static surface.

(3)

Remove the tubing plate as described in Section 5.1.6.3.

(4)

Using your index finger, shift the calibration manifold back and forth several times to
loosen its connection with the adapter plate O-rings. Carefully lift the calibration valve
housing with one hand and turn it over, letting the calibration manifold fall into the free
hand. It is imperative that the calibration manifold does not fall on a hard surface since
scratches on the manifold can result in pneumatic leaks.

(5)

To remove the six (6) pistons from their slots on the manifold valve, hold the valve in
one hand and apply air pressure of approximately 30 psi (200 kPa) to the C3/C4 input
passages on the valve. The passages (0.043" diameter holes) are located on the side of
the valve next to the tubing plate, one hole on each side of the valve. Pressure on one
side will release three (3) pistons, and pressure on the other side will release the other
three (3). If the pistons stick, apply a slightly higher pressure. Place your free hand over
the calibration valve housing to prevent the pistons from coming out of the housing.
Thoroughly clean the pistons with a fast evaporating cleaning fluid that leaves little or no
residue (e.g., acetone, alcohol, Freon®, etc.) and dry with supply air. Replace the piston
O-rings (PSI part number 61-03-58610) after lightly lubricating the rings with Krytox®
fluorinated grease, making sure that the piston faces are free of Krytox® lubricant.
Replace the pistons in their cavity by placing the O-ring side of the piston in first and
then pressing the piston completely into its cavity with one finger.

(6)

To remove the two (2) C1/C2 pistons from their slots on either end of the manifold valve
housing, hold the manifold valve housing in one hand, and apply approximately 30 psi
(200 kPa) to the two bulge tubes, one on either end of the housing end-plate. This will
result in the pistons being forced out of their cavity. If the pistons stick, apply a higher
pressure. Place your free hand over the calibration valve housing to prevent the pistons
from coming out of the housing. Clean the pistons, lubricate and replace the O-rings
(PSI part number 61-12-2023), and replace the pistons into their cavities as described in
(5) above, making sure that the piston faces are free of Krytox® lubricant.
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(7)

Thoroughly clean the calibration manifold with a fast-evaporating cleaning fluid that
leaves little or no residue (e.g., alcohol, acetone, Freon®, etc.). Lightly spray the inner
sides of the side panels of the calibration manifold housing and the calibration manifold
with silicone lubricating oil. Replace the calibration manifold into the housing, making
sure that the guiding pin fits into the slot of the manifold housing.

(8)

Replace the tubing plate as described in Section 5.1.6.3.

(9)

Replace the PC-206 board as described in Section 5.1.3.1 and reassemble the module.

(10)

Test your scanner to ensure proper operation.

5.1.6.5

Solenoid Valve O-Ring Replacement

Following is a step-by-step procedure to replace the internal solenoid valve O-rings in a Model
9016 Intelligent Pressure Scanner. The module contains two internal solenoid valves.
(1)

Disassemble the module as described in Section 5.1.2.

(2)

Remove the solenoid valve by unscrewing the two (2) Phillips-head screws on top of the
solenoid. Gently lift it out of the module. Be careful not to crimp the attached nylon
tubing.

Figure 5.7
Solenoid Valve O-Ring Replacement
(3)

Remove and replace the O-rings needing maintenance using the procedure described in
Section 5.1.6.1.

(4)

Replace the solenoid valve and gently tighten the screws.

(5)

Reassemble the module.

(6)

Test your scanner to ensure proper operation.
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NetScanner™ System (9016, 9021, & 9022) User’s Manual

5.2 9022 Excitation Trim
The 9022 output voltage is factory set at 10 volts. The following procedure can be used to trim
the 10 volt output (~±5%).
(1)

Disassemble the unit as described in Section 5.1.2.

(2)

Locate R-19, the output voltage trim potentiometer, on the PC-317 board. It is the only
potentiometer on the board and is near the end of the unit on the top side of the lower PC
board (PC-317), toward the end of the unit nearest the main power and communications
connector. Note that R-19 is a four turn potentiometer. See Figure 5.8, below.

Figure 5.8
PC-317 Board (Trim Potentiometer and Jumper
(3)

Place the disassembled unit on a nonconductive surface. Using a spare connector,
connect a calibrated voltage meter to pins G and H (+ and - respectively) of any of the
transducer connectors.

(4)

Apply power to the unit through the main power and communications connector. The 10
volt output voltage may be trimmed by rotating the potentiometer R-19.

(5)

Once the output voltage is set, remove power from the unit.

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approximately one half turn. Ensure there are no connectors from the P1 harness pinched
between the top plate and the housing. Ensure the top plate gasket is properly installed.
Install the screw that secures the top panel to the housing. Tighten the three (3) screws
attached to the PC-280 mounting brackets.
(7)

Test your scanner to ensure proper operation.

5.3 9022 Procedure for Changing the Excitation Jumper
Setting (JB1)
The following procedure can be used to change the output voltage selection.
(1)

Disassemble the unit as described in Section 5.1.2.

(2)

Locate the JB1 jumper block on the PC-317 board (See Figure 5.8, above). It is the only
jumper block on the board and is near the end of the unit on the top side of the lower PC
board (PC-317), toward the end of the unit nearest the main power and communications
connector.

(3)

The jumper block may be placed in one of two positions on the board. When the jumper
block is placed on the two pins nearest the edge of the board, the ten (10) volt output is
selected. When the jumper is placed on the second and third pins from the edge of the
board, the five (5) volt output is selected. The PC-317 board will have to be separated
from the PC-316 board in order to relocate the jumper. Insure these two boards are fully
reseated before proceeding.

(4)

Reinsert the electronics into the housing, ensuring that the alignment posts in the
module’s bottom panel align with the holes in the PC-280 mounting brackets. This may
require loosening approximately one half turn, the three (3) screws attaching the PC-280
board to the top plate . Ensure that no connectors from the P1 harness are pinched
between the top plate and the housing. Ensure that the top plate gasket is properly
installed. Install the screw that secures the top panel to the housing. Tighten the three (3)
screws attached to the PC-280 mounting brackets.

(5)

Test your scanner to ensure proper operation.

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5.4 Upgrading Module Firmware
All NetScanner™ System Intelligent Pressure Scanner modules contain electronically reprogrammable memory devices that store the module firmware. Pressure Systems will provide
new releases of module firmware for enhanced instrument performance whenever updates or
modifications are made. All scanner modules may have their firmware downloaded via their
Ethernet Host Port. This allows for firmware upgrade while the module is installed in its normal
communications network environment. Any new firmware releases may be obtained free of
charge by downloading from PSI’s internet home page at www.PressureSystems.com.
Download links can be found on the home page and in the information page for each model
(e.g., Model 9016, Model 9022, etc.). All firmware is stored as a self-extracting .ZIP file. Once
downloaded from the internet, simply execute the download file to extract the archived file(s).

5.2.1 Upgrading Firmware Via Host TCP/IP Port
New firmware for your NetScanner™ System Intelligent Pressure Scanners, may be upgraded
by the host computer, or any computer on the TCP/IP network, directly via the module’s Host
Port. The PSI application called NetScanner™ Unified Startup Software (NUSS), is provided
for this purpose. It is recommended that NUSS (and any new firmware update file) be installed
to a suitable subdirectory of your hard disk for better performance. Installation instructions for
this support software are provided with the application. Ensure that the TCP/IP
communications is properly configured for the PC running the application.
NUSS is provided to all customers who have purchased NetScanner™ System Intelligent
Pressure Scanners. This application has its own User’s Manual and both may be downloaded
from PSI’s Web site, www.PressureSystems.com.
WARNING: While updating module firmware, DO NOT power-cycle your scanner, or
your PC. If the firmware update procedure is interrupted by any of these practices, the
module may be left in a “permanent” inoperable state with no operable firmware to
reboot it. The ONLY acceptable way to interrupt the firmware update process is to
select “Abort Download” before the memory begins to be overwritten. In the event of
such failure, module operation can only be restored by unplugging the “bad” memory
chip and installing a “good” memory chip containing a valid working firmware

After NUSS has finished downloading the new firmware, wait approximately 30
seconds for your NetScanner™ System module to reset before closing NUSS, else the
newly installed firmware may be unreliable.

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Chapter 6
Troubleshooting Guide
6.1 Ethernet Module Troubleshooting
6.1.1

Checking Module Power-Up Sequence

(1)

Proper power to the module should first be verified. If possible, verify that the output of the
module power supply is set within the range of 18-36 VDC. This should be nominally set
for 24 VDC. Ensure the power supply setting is high enough to compensate for cable
voltage drops if long interface cable lengths are used.

(2)

Turn module power switch ON and verify the following top panel LED status following
initial power-up :
!

PWR LED should remain ON
If this LED is not on, all other LED’s will likely also be off. Check the PSI
90DB, remote power supply (8491), or customer provided power supply to
ensure the proper voltage (18-36 VDC) is being provided. Also verify that
the power pins in the module interface cable are wired as described in
Section 2.3.2 and Appendix D.

COL LED should remain OFF

Tx LED should remain OFF
Note that any activity of the Tx LED during the power up sequence is an
indication that the RARP/BOOTP protocol is enabled. This will typically
occur following the initial Busy (BSY) LED cycle and continue until an
appropriate RARP reply is received.

LNK LED should remain ON
This LED indicates proper connection to an Ethernet hub or switch. If this
LED is OFF, verify that the module is properly connected to the
communications hub or switch. Verify proper power is applied to the hub.
Also try connecting the 9016, 9021, or 9022 cable to a different port of the
hub. Note that most hubs have similar link LEDs to indicate proper
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connection to the hub itself. If present, verify that the hub link LED for the
pressure scanner and the host computer are both active. If the hub is
functioning correctly, verify that the communications pins in the module
interface cable are wired as described in Section 2.3.4.1 and Appendix D.
!

CAL LED should remain OFF

PRG LED should remain OFF

Busy (BSY) LED should blink 8-16 times at a rate of approximately 1 Hz (slower for
9021/9022), delay ON for approximately 5 seconds and then start to continuously
blink at approximately 100 Hz (rate dependent on number of internal averages). This
faster toggle rate may simply appear as a dimly lit LED. Note that the Busy (BSY)
LED will not begin its 100 Hz toggle rate if the dynamic IP addressing
(RARP/BOOTP) protocol is enabled and the module has not received a proper IP
address response.

Any significant variation from this power-up LED sequence is an indication of a possible cabling
or PC-280 microprocessor board error. If the proper power-up LED sequence is not achieved after
following the above suggestions, contact the Repair Department at Pressure Systems for additional
assistance.

6.1.2

Checking Module TCP/IP Communications

If the LED indicators of the 9016, 9021, and 9022 are correct, the module is normally capable of
proper communications. In order for communications to be established with a functional 9016,
9021, or 9022 (assuming correct interface cables are used), two user-controlled parameters must be
met. First, the module must be configured to obtain a proper (and unique) module IP address.
Second, the user’s host computer must have its TCP/IP communications interface properly
configured.
6.1.2.1

Module IP Address Assignment

Before an Ethernet 9016, 9021, or 9022 can communicate with a host computer, it must have a valid
IP address assignment. As explained in Section 2.3.4.1, there are two methods for assigning an IP
address to an Ethernet device, static and dynamic. The Static IP addressing protocol is the default
method for IP address assignment in the 9016 and 9021/9022. This is primarily because it allows
the module to assign its own IP address based on a factory default value. The Dynamic IP addressing

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protocol is slightly more complicated since it requires a Dynamic IP server to be present and properly
configured on the network. Before host communications can be established, the user must ensure
that the 9016 or 9021/9022 has been assigned a known IP address through either Static IP or using
a Dynamic IP server.
To determine whether Static or Dynamic IP addressing is enabled, observe the module Tx LED on
module power-up. As explained in Section 6.1.1, if Dynamic addressing is enabled, the module Tx
LED will flash one or more times during the power-up sequence. If the module receives a valid
reply, the Busy (BSY) LED will begin to flash rapidly (appearing dim) and the Tx LED will remain
OFF. If it appears the module received an IP server reply or that it is configured for the Static IP
(default) addressing, proceed to Section 6.1.2.2 to verify proper host TCP/IP configuration.
If the module does not receive a response to a Dynamic IP addressing request, its Tx LED will
continue to flash with an increasing delay between Tx attempts. The Busy (BSY) LED will also
remain OFF until a Dynamic IP addressing reply is received. If a Dynamic IP reply is not received,
verify that a Dynamic IP server is present on the network. If the IP server is present, verify that it
contains an entry for the 9016, 9021, or 9022 Ethernet hardware (MAC) address. Verify this address
against the Ethernet address printed on the module label to ensure it has been entered correctly into
the Dynamic IP server. After making the required changes to the IP server, repeat the above steps
until the module receives a valid Dynamic IP reply.
If the user wishes to manually change the factory set IP address in a module, it may be done with
the NUSS application program (described more fully in Section 6.1.2.2). To use it for this purpose,
select the desired module on the application’s screen map (left window), then press (click) the rightmouse button to get the module’s pop-up context menu. From the NUSS menu, select Configure/
Network Options. A new screen then appears that will accept a new IP address (and other network
parameters). After the new address is sent, the module must be “re-booted” (another choice on the
context menu) before it will take effect.
NOTE:

NetScanner™ System modules are factory-configured to use a
200.xxx.xxx.xxx IP address with a 192.0.0.0 subnet mask. These addresses
were chosen with the understanding that the modules would run on a
totally private network. Addressing errors may occur if modules are
connected to a company internal network or if the modules are connected
to the Internet. If you are not sure about the configured networking
scheme, please consult your network administrator.

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NOTE:

6.1.2.2

NetScanner™ System (9016, 9021, & 9022) User’s Manual

NetScanner™ System modules are currently designed to use RARP
protocol and BOOTP protocol for Dynamic IP address assignment.
When placed in Dynamic addressing mode, (through the TCP/IP
protocol ‘w1301' command), the modules will first try to resolve their
addresses using RARP protocol. If no RARP server can be found, the
modules will then use the BOOTP protocol. The modules will alternate
between these two protocols until a response is received and an IP
address is assigned. If you are not sure about these protocols, or if your
modules should be using them, please contact your network
administrator.

A simple Windows® 95/98/2000/XP/NT BOOTP/RARP server is
available free of charge from Pressure Systems. For additional
information on the BOOTP Lite application, contact the Pressure
Systems Sales or the Applications Support Department. The application
can also be downloaded from the Pressure Systems web site found at
www.PressureSystems.com.
Host IP Address Assignment for Windows® 95/98/NT

In order to communicate with the Ethernet 9016, 9021, or 9022, the host computer must also be
configured with an appropriate IP address. For Windows® 95/98 and Windows® NT, a typical
configuration is described below. Note that this configuration assumes that a host PC Ethernet
adapter is installed and not in use for any other TCP/IP application. If your Ethernet adapter is used
for other TCP/IP communications, contact your MIS or network administrator to determine proper
host IP address and subnet mask configurations before proceeding.
Activate the Windows® control bar (left click the START icon). Select the SETTINGS line
followed by the CONTROL PANEL folder. In the CONTROL PANEL folder, select the
NETWORK icon. Once in the NETWORK setup, select the tab labeled CONFIGURATION.
Scroll through the list of installed configuration protocols. Select the one labeled ‘TCP/IP->xxxx’
where xxxx will typically identify your Ethernet adapter card. There may be other TCP/IP protocols
listed for other items such as dial up adapters, these are not used for the NetScanner™ System
Ethernet configuration. If the TCP/IP protocol is not listed in the configuration menu, left click the
ADD button. Continue by selecting to add a PROTOCOL. Select MICROSOFT from the
Manufacturers list. Then select TCP/IP from the networks protocol list.

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Once in the proper TCP/IP protocol setup, select the ‘IP Address’ tab. Click on the button to enable
the field ‘Specify IP Address.’ Once selected, the fields for IP address and Subnet will be enabled.
In the IP address, enter a TCP/IP address for your host computer. An IP address of 200.200.200.001
will work if the 9016, 9021, or 9022 is using the factory default IP address. If the leftmost fields of
the 9016, 9021, or 9022 module IP addresses are different than the factory default of 200.20x.yyy.zzz
then the leftmost fields of the host computer’s IP address must match the module’s leftmost IP
address field. In the Subnet field a value of 255.0.0.0 can be entered for most configurations.
When these fields are entered, click the OK icons until Windows® prompts you to restart your
computer. (Windows® 95/98 only). Once the computer has restarted, it should be capable of
communications with the Ethernet NetScanner™ System module.
6.1.2.3

Verifying Host TCP/IP Communications

At this point, the NetScanner™ System module should be configured to obtain its IP address through
either static (default) or dynamic IP addressing. The module’s IP address must be assigned and
known in order to proceed. The host computer has also been configured for TCP/IP protocol and
assigned an IP address compatible with the NetScanner™ System IP address. A simple method to
verify proper operation is through the ping utility. This is a simple TCP/IP utility that is found in
Windows® 95/98/NT as well as most other TCP/IP packages. The ping utility simply sends a test
packet to the specified IP address and waits for reply to be returned. NetScanner™ System Ethernet
modules are programmed to reply to these ping requests.
To run the ping utility from Windows® 95/98/NT, follow these steps. Left click the Windows®
START button. Move the mouse pointer to ‘RUN’ and left click on it. At the prompt type ‘ping
xxx.xxx.xxx.xxx’ where xxx.xxx.xxx.xxx represents the IP address of the device to test. The IP
address of an Ethernet NetScanner™ System module should be used. A small DOS window will
appear as the ping application executes. The ping program will either report that a reply was
received or that it failed to receive a reply. If the ping application reported receiving a reply, the host
computer and the NetScanner™ System module are both properly configured for TCP/IP
communications.
If an error free ping reply was not received, rerun the ping application using the IP address of the
host computer. This will verify if the TCP/IP protocol was properly configured on the host computer.
If a ping reply was not received, verify the TCP/IP installation steps for your host computer. Also
verify that the host computer is configured for the proper IP address and subnet mask.

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If the ping test of the host computer’s IP passed, while the ping of the NetScanner™ System module
failed, check the following possible sources for error:
!

Ensure the NetScanner™ System module’s IP has been assigned (as explained in
Section 6.2.2.1) and that the correct IP was used for the ping test.

Ensure the IP address of the host computer and the NetScanner™ System module are
not duplicated on the network.

Ensure the link LEDs are active on the scanner and the Ethernet hub or switch to
which it is attached. Also ensure the link LEDs are active on the host computer’s
Ethernet adapter and the hub or switch to which it is attached.

Ensure the Ethernet adapter card installed in the host is properly configured without
conflict. In Windows®95 this can be verified by entering the CONTROL PANEL
under SETTINGS. Under CONTROL PANEL, select the SYSTEM icon. When
the DEVICE MANAGER tab is selected, a list of all installed hardware devices will
be displayed. Any possible hardware conflicts will be marked in this list with a
yellow warning symbol next to the device in question.

Ensure the Ethernet adapter is configured for 10 Mbit/Sec. Many adapters are
capable of higher speeds that are not compatible with the NetScanner™ System
modules.

6.2

Zero and Gain Calibration Troubleshooting

Incorrect pneumatic setup or incorrect command usage when executing a module’s Re-zero or Span
calibration command (see ‘Z’, ‘h’, and ‘C’ commands in Chapter 3) can result in unexpected
module operation. A common source of errors during these operations is incorrect control of the
module’s internal calibration valve and pneumatic inputs (9016) or their external
pneumatic/hydraulic equivalents (9021/9022).
Pressure connections are described in Chapter 2 while details of calibration procedures are
described throughout Chapter 4. Some common errors and problems are listed below. These
common problems apply primarily to Model 9016 with its internal transducers and calibration
manifold. However, similar symptoms may be encountered with external pneumatic/hydraulic
calibration equipment connected to a model 9021/9022’s all-media transducers.
!

The module’s supply air input is either not attached or does not provide enough
pressure (less than 65 psig) to shift the calibration valve. This results in the
calibration valve remaining in its current position even though module commands
have requested movement of the valve.
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The module’s calibration valve is not placed in the correct position before executing
the Span calibration command (Calculate & Set Gain). This command will not
automatically shift the valve to the CAL position before taking data (as the Re-zero
calibration command does). The user must manually control the calibration valve
position using the Set Operating Options (‘w’) command if the CAL and CAL REF
inputs are to be used.

The Re-Zero calibration command (Calculate & Set Offsets) will automatically shift
the calibration valve unless the option is disabled with the Set Operating Options
(‘w’) command. The valve will be placed in the CAL position (with a small delay)
before taking Re-zero data. Afterwards, the valve will be placed in the RUN
position.

Zero (offset) and Span (gain) correction terms are not automatically saved in
transducer nonvolatile memory. If they are not saved using the Set Operating
Options (‘w’) command, they will be lost when module power is turned off. Verify
that new coefficients produce valid data before saving them.

When Span calibrating a multi-range unit, attach the calibration pressures to the
individual measurement input ports of the range being calibrated and not to the CAL
input port. Use of the common CAL input may result in over-pressuring lower range
channels. When sending the Calculate and Set Gain (‘Z’) command, ensure that the
position field bits are set only for those channels that are attached to the calibration
pressure.

When using the standard Calculate and Set Gain (‘Z’) command, the module
firmware assumes, by default, that each particular transducer’s full-scale pressure is
present at its pneumatic/hydraulic input. All internal calculations of gain correction
are based on the exact full scale pressure being applied to the transducers. If it is not
possible to provide this exact pressure (as when using a dead weight tester), the
alternate form of this command should be used. This allows the host to specify the
exact upscale pressure applied to the transducers being calibrated.

When using the standard Calculate and Set Offsets (‘h’) command, the module
firmware assumes, by default, that each particular transducer’s zero pressure is
present at its pneumatic/hydraulic input. All internal calculations of zero correction
are based on an input pressure of 0.0 psi. If it is not possible to provide this exact
pressure (as when calibrating an absolute pressure transducer), the alternate form of
this command should be used. This allows the host to specify the exact minimum
pressure applied to the transducers being calibrated.

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6.3

NetScanner™ System (9016, 9021, & 9022) User’s Manual

User Software

For a complete description of NetScanner™ System software, please refer to the NetScanner™
Unified Startup Software (NUSS) User’s Manual.

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Chapter 7
Start-up Software
7.1

Introduction

The NetScanner™ System Unified Startup Software (NUSS) allows you to operate, from a
Windows®-based host PC, a diverse network of pressure scanner modules and/or
standard/calibrator modules of the NetScanner™ System type.
NUSS integrates a diverse set of older “startup,” “query,” and “test” programs that were often
very module-specific. NUSS recognizes each NetScanner™ System module type it finds on the
network and automatically provides that module with its appropriate functionality by
dynamically adjusting the program’s form and menu content. NUSS allows you to operate
NetScanner™ System modules singly or together in selected groups without having to write any
custom software, and without having to learn low-level commands. The software was designed
to permit you to test almost every possible module function with a simple interactive point-andclick interface.
NUSS is provided to all customers who have purchased a NetScanner™ System Intelligent
Pressure Scanner. The software as well as the User’s Manual may be downloaded from PSI’s
Web site, www.PressureSystem.com.

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Appendix A
All Commands — Quick Reference:
Type

Command id

Command Function

TCP/IP

Power-Up Clear

Reset

Configure/Control Multi-Point
Calibration (4 sub-commands)

Read Transducer Voltages

Calculate and Set Gains (Span Cal)

Read Transducer Raw A/D Counts

Acquire High Speed Data

Define/Control Autonomous Host
Streams (6 sub-commands)

Calculate and Set Offsets (Re-zero
Cal)

Read Temperature A/D Counts

Read Temperature Voltage

Read Module Status

Read High Precision Data

Read Transducer Temperature

Read Internal Coefficients

Download Internal Coefficients

Set/Do Operating Options/Functions

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Type

Command id

UDP/IP
Broadcast

psi9000
psireboot
psirarp

Command Function
Query Network
Reboot Specified Module
Change Specified Module’s IP
Address Resolution Method (then
Reboot)

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Appendix B
NetScanner™ System Response Error Codes:
CODE

MEANING

(Unused)

Undefined Command Received

Unused (by TCP/IP)

Input Buffer Overrun

Invalid ASCII Character Received

Data Field Error

Unused (by TCP/IP)

Specified Limits Invalid

NetScanner™ System error - Invalid Parameter

Insufficient source air to shift calibration valve

Calibration valve not in requested position

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Appendix C
Cable Diagrams
Description

Applicable Models

Page

Ethernet Interface Cable - unterminated host
Ethernet Interface Cable

9016, 9021, and 9022
9016, 9021, and 9022

C-2
C-3

9400 Series/9021 (D-Shell) Cable

9021

C-4

9400 Series/9022 (Circular Connector)
Cable

9022

C-5

9021 to Series 27 Interface Cable

9021

C-6

9022 to Series 27 Interface Cable

9022

C-7

Calibration Cable

9022

C-8

3rd Party Sensor Interface Cable

9022

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NetScanner™ System Ethernet Interface Cable
P/N 9080

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NetScanner™ System Ethernet Interface Cable
9080 Cable

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9096 Cable
9400/9021 (D-Shell) Cable

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9096 Cable
9400/9022 (Circular Connector) Cable

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9021 to Series 27 Interface Cable
9021

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9022 to Series 27 Interface Cable

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Calibration Cable (9022)

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Third-Party Sensor Interface Cable (9022)

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Appendix D
Mounting Dimensions
9016 Mounting Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2
9021 Mounting Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3
9022 Mounting Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4

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9016 Mounting Dimensions

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9021 Mounting Dimensions

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9022 Mounting Dimensions

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

Appendix E
NetScanner™ System Range Codes
The following range codes are stored in each DH200 and digital 9400 and 9401 pressure
transducer. The range code of each transducer can be read through the Read Internal Coefficient
(‘u’) command. Standard Range Codes are shown in Bold and Italics.
Range Code

Full Scale Pressure

Minimum Calibration
Pressure

±0.360 psi (±10" Water Column)

-0.360 psi

±0.720 psi (±20" Water Column)

-0.720 psi

±1 psid

-1.0 psi

±2.5 psid

-2.5 psi

±5 psid

-5 psi

10 psid

-5 psi

15 psid

-5 psi

30 psid

-5 psi

45 psi

0 psi

100 psi

0 psi

250 psi

0 psi

500 psi

0 psi

600 psi

0 psi

300 psi

0 psi

750 psi

0 psi

10 psid

-10 psi

E-1

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

Range Code

Full Scale Pressure

Minimum Calibration
Pressure

15 psid

-12 psi

30 psid

-12 psi

45 psid

-12 psi

20 psid

-12 psi

20 psi

0 psi

15 psi

0 psi

15 psid

-10 psi

5 psi

0 psi

10 psi

0 psi

30 psi

0 psi

50 psi

0 psi

100 psi

0 psi

100 psia

2.5 psi

250 psia

25 psi

50 psia

2.5 psi

500 psia

25 psi

750 psia

25 psi

30 psia

2.5 psi

15 psia

2.5 psi

125 psi

0 psi

35 psid

-12 psi

150 psi

0 psi

200 psi

0 psi

22 psid

-12 psi

E-2

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

Range Code

Full Scale Pressure

Minimum Calibration
Pressure

60 psid

-12 psi

375 psi

0 psi

150 psi

0 psi

75 psi

0 psi

150 psi

0 psi

650 psi

0 psi

850psi

0 psi

150 psia

25 psi

750 psia

50 psi

75 psia

2.5 psi

1.2 psi

-1.2 psid

E-3

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

Appendix F
NetScanner™ System/9000 Series Products
Model

Purpose

9016/9116
9021

9022

9032/33
9034/38
98RK

9816

90DC

9096
9080

9400/9401/9402 -

16-channel Intelligent Pressure Scanner with Ethernet TCP/IP Host Port.
12-channel Media-Isolated Intelligent Pressure Scanner with Ethernet
Host Port.
12-channel splash-proof, ruggedized Media-Isolated Intelligent Pressure
Scanner with Ethernet Host Port.
Pressure Standard Unit with Ethernet TCP/IP Host Port.
Pressure Calibrator Unit with Ethernet TCP/IP Host Port.
Scanner Interface Rack that holds up to eight (8) Model 9816 Intelligent
Pressure Scanners. Rack provides power, pneumatic connections and hub
circuitry for up to twelve (12) 10Base-T connections.
Intelligent Pressure Scanner that requires 98RK Scanner Interface Rack
for power, pneumatic connections, and hub circuitry.
Data Concentrator, containing power and 24 switched Ethernet ports,
connections to as many as 24 NetScanner™ System modules.
Series 9400 Interface Cable.
Interface cable for connecting NetScanner™ System modules to switches
and hubs.
Media-Isolated Pressure Transducers for Models 9021 and 9022

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NetScanner™ System (9016, 9021, & 9022) User’s Manual

Appendix G
Binary Bit Map
Bit Value
(if Set)

Bit
Position

Binary Number

0000

0001

0000

0010

0000

0100

0000

1000

0000

0001

0000

0010

0000

0100

0000

128

0000

1000

0000

256

0000

0001

0000

512

0000

0010

0000

1024

0000

0100

0000

2048

0000

1000

0000

4096

0001

0000

8192

0010

0000

16384

0100

0000

32768

1000

0000

Decimal to Binary Conversion:
892 dec = 512 + 256 + 64 + 32 + 16 + 8 + 4
0000

0011
3

0111
7

1100
C

G-1

binary
hexadecimal

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Headquarters/Factory:
Pressure Systems, Inc.
34 Research Drive
Hamtpton, VA 23666
USA
Phone:
(757) 865-1243
Toll Free: (800) 328-3665
Fax:
(757) 865-8744
E-mail: sales@PressureSystems.com

European Office:
PSI, Ltd.
124, Victoria Road
Farnborough, Hants
GU14 7PW
United Kingdom
Phone: +44 1252 510000
Fax:
+44 1252 510099
E-mail: PSI@WestonAero.com

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