Hi G Tek IGRS46D916 DataReader User Manual contents 1 4

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Date Submitted	2002-08-27 00:00:00
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Hi-G-Tek Ltd. Microelectronics and Asset Tracking Technology
DataReader
and
DataSeal
System
User's Manual
Ver. A2
UM4710
Table of Contents
Page
1. Introduction
1.1. About the Product
1.2. DataReader System Components
1.2.1. DataSeal Mounting Fixture
1.2.2. The DataSeal
1.2.3. Seal Wire
1.2.4. Outdoor DataReader
1.2.5. Indoor DataReader
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16
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22
2. DataSeal Installation
2.1. DataSeal Installation
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26
3. DataReader Installation
3.1 Outdoor DataReader Installation
3.1.1 Connecting the Outdoor Unit
3.1.2 Ceiling Installation
3.1.3 Wiring the Outdoor Datareader
3.1.4 DataReader Configuration switches
3.1.5 RS232 Wiring Diagram
3.1.5 RS-485 Full Duplex Wiring Diagram
3.1.6 RS-485 Half Duplex Wiring Diagram
3.2 Indoor DataReader Installation
3.2.1 Connecting the Indoor Unit
3.2.2 Ceiling Installation
3.2.3 Wiring the Indoor DataReader
3.2.4 RS-232 Wiring Diagram
3.2.5 RS-485 Full Duplex Wiring Diagram
3.2.6 RS-485 Half Duplex Wiring Diagram
3.3 Chaining DataReaders Together
3.4 RS-232/RS-485 Adapter
3.4.1 Connecting the RS-232/RS-485
Adapter to the First Reader
3.4.2. Connecting the RS-232/RS-485
Adapter to the Host
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3.5. Power Supply Requirements
3.6. Communication Cable Selection
3.7. Installation notes
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45
46
4. DataReader Operation Instructions
47
5. The System
5.1. System Description
5.1.1. General
5.2. System Parameters
5.2.1. Seal's Parameters
5.2.2. Reader's Parameters
5.2.3. Calculating Thw
5.2.4. Calculating Tw
5.2.5. Calculating Thp
5.3. Parameters Format
5.3.1. Date & Time
5.3.2. Seal Serial Number.
5.3.3. ORG_ID & Department
5.3.4. System
5.3.5. Mode
5.4 Seal Modes of Operations
5.4.1. Normal Mode
5.4.2. Sleep Mode
5.4.3. Alert Burst Mode
5.4.4. Events Footprint Mode
5.5. Reader Modes of Operation
5.5.1. Carrier Sense Collision
5.5.2. Unsynchronized Mode
5.6. System Commands
5.6.1. LSC and Reader Messages
5.6.2. Error Codes
5.6.3. Detailed Commands
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5.6.3.1. Wakeup
5.6.3.1.1. Command
Transmission
5.6.3.2. Execute RF Command
5.6.3.2.1. Command
Transmission
5.6.3.2.2. Verify
5.6.3.2.3. Tamper
5.6.3.2.4. Set
5.6.3.2.5. Suspended Set
5.6.3.2.6. Soft Set
5.6.3.2.7. Deep Sleep
5.6.3.2.8. Hard Wakeup
5.6.3.2.9. Start Alert
Burst Mode
5.6.3.2.10. Stop Alert
Burst Mode
5.6.3.2.11. Ack Alert
Burst Mode
5.6.3.2.12. Read Data
5.6.3.2.13. Write Data
5.6.3.2.14. Reset Data
5.6.3.2.15. Set/Reset Status
5.6.3.2.16. Write Parameters
5.6.3.2.17. Read Parameters
5.6.3.2.18. Addressed Verify
5.6.3.2.19. Read Events
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5.6.3.3. Get Results
85
5.6.3.4. Get Status
86
5.6.3.5. Get Burst Message
89
5.6.3.6. Reset Reader
5.6.3.7. Write Parameters
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5.6.3.8. Read Parameters
93
5.6.3.9. BIT
5.6.3.10. Sleep
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95
5.6.3.11. Unsynchronized Reader
Message
95
5.6.3.12. Get Reader's Baud Rate
96
5.6.3.13. Set Reader's Baud Rate
96
5.6.3.14. Set Reader's Address
97
5.6.3.15. Acknowledge OK
5.6.3.16. Acknowledge Failed
5.6.3.17. Save Command
98
98
98
5.6.3.18. Execute Saved
Command
5.6.3.19. Reader Channels
Definitions Command
5.7. System Planning
5.7.1. Electromagnetic Environment
5.7.2. System Layout
5.7.2.1. Radio Frequency
Communication Layout
5.7.2.2. Cellular Layout
5.7.2.3. Reader Sessions
Retransmissions
5.7.2.4. Line Communications
RS-485 Layout
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5.8. System Segregation
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5.8.1. Company Segregation by ORG_ID
5.8.2. Department Isolation
5.8.3. Common Services to Several
Companies by a Service Provider
5.8.4. How to use subgroups of Seals in
a Company
5.8.5. ORG_ID, Global and ADI: Impact on
Seal's Response
5.9. Seal Memory
5.9.1. Events Memory
5.9.2. User Data
107
107
5.10. Calculating Reader Session Duration
5.10.1. Calculating Tbmm
5.10.2. Calculating Trw
6. RS-485/232 Communication Protocol
6.1. RS-485/232 Communication Protocol:
General Description
6.2. Physical Layer
6.2.1. Down Link
6.2.2. Up-Link
6.3. Protocol Flow
6.4. String Format
6.4.1. LSC to READERS Messages
6.4.1.1. CRC Calculation
6.4.1.2. CMND Field Structure
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6.4.2. READER to LSC Messages
6.4.2.2. R_Status Field Structure
6.4.2.3. Reader Messages Packed
Data Format
6.4.2.3.1. Packed Data from
the LSC
6.4.2.3.2. Packed Data from
the READER
6.5. LSC and READER Messages
6.5.1. LSC Commands and Acknowledge
Table
6.5.2. Message Table
6.5.3. Parameter Table
6.5.3.1. Reader Master Firmware
Vresion MVER
6.5.3.2. Reader Slave1 Firmware
Version SVER1.
6.5.3.3. Reader Slave1 Firmware
Version SVER2
Reader Receives Signal 6.5.3.4.
Strength RSSI1
6.5.3.5. Reader ID RID
6.5.3.6. Group Access Identifier ADI
Organization identifier OrgID6.5.3.7.
6.5.3.8. Department DEP
6.5.3.9. Reader IH length Thw
6.5.3.10. Reader Address RADD
6.5.3.11. Mode MODE
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6.5.4. Error Codes
6.5.5. Detailed Commands
6.5.5.1. Wakeup
6.5.5.1.1. Command
Transmission
6.5.5.1.2 Wakeup Response
6.5.5.2. Execute RF Command
6.5.5.2.1. Command
Transmission
6.5.5.2.2. Execute RF
Command Ack
6.5.5.2.3. Verify
6.5.5.2.4. Tamper
6.5.5.2.5. Set
6.5.5.2.6. Suspended Set
6.5.5.2.7. Soft Set
6.5.5.2.8. Deep Sleep
6.5.5.2.9. Hard Wakeup
6.5.5.2.10.Start Alert Burst Mode
6.5.5.2.11. Stop Alert Burst Mode
6.5.5.2.12. Acknowledge Alert
Burst Mode
6.5.5.2.13. Read Data
6.5.5.2.14. Write Data
6.5.5.2.15. Reset Data
6.5.5.2.16 Set/Reset Status
6.5.5.2.17. Write Parameters
6.5.5.2.18. Read Parameters
6.5.5.2.19. Addressed Verify
6.5.5.2.20. Read Events
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6.5.5.3. Get Results
6.5.5.3.1. Command
Transmission
6.5.5.3.2. Get Results Command
General Response
6.5.5.3.3. Get Results Command
Response for Verify
Command
6.5.5.3.4. Get Results Command
Response for Tamper
Command
6.5.5.3.5. Get Results Command
Response for Set
Command
6.5.5.3.6. Get Results Command
Response for Suspended
Set Command
6.5.5.3.7. Get Results Command
Response for Soft Set
Command
6.5.5.3.8. Get Results Command
Response for Read Data
Command
6.5.5.3.9. Get Results Command
Response for Write Data
Command
6.5.5.3.10.Get Results Command
Response for Deep Sleep
Command
6.5.5.3.11. Get Results Command
Response for Hard
Wakeup Command
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6.5.5.3.12. Get Results Command
Response for Reset
Data Command
6.5.5.3.13. Get Results Command
Response for Start Alert
Burst Mode Command
6.5.5.3.14. Get Results Command
Response for Stop Alert
Burst Mode Command
6.5.5.3.15. Get Results Command
Response for Start Alert
Burst Mode Command
6.5.5.3.16. Get Results Command
Response for Write
Parameters Command
6.5.5.3.17. Get Results Command
Response for Read
Parameters Command
6.5.5.3.18. Get Results Command
Response for Addressed
Verify Command
6.5.5.3.19. Get Results Command
Response for Read
Events Command
6.5.5.4. Get Status
6.5.5.5. Get Burst Message
6.5.5.6. Reset Reader
6.5.5.7. Write Parameters
6.5.5.8. Read Parameters
6.5.5.9. BIT
6.5.5.10. Sleep
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6.5.5.11. Unsynchronized Reader
Message.
159
6.5.5.12. Get Reader's Baud Rate
160
6.5.5.13. Set Reader's Baud Rate
6.5.5.14. Set Reader's Address
6.5.5.15. Acknowledge OK
6.5.5.16. Acknowledge Failed
6.5.5.17. Save Command
6.5.5.18. Execute Saved Command
6.5.5.19. Read Channel Definitions
Command
6.5.5.20. Write Channel Definitions
Command
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7. Evaluation Software
7.1. Software Installation
7.2. Communication SetupReaders Administration
7.2.1 Defining the Readers
Connected
7.2.2 Setting up the
Communication Channel
7.3. Readers Setup
7.3.1 MCU Setup
7.3.2 RF Modem Setup
7.4. Built-In Test
7.5. Login-Password Setup.
Password Change
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Table of Contents
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7.6. Download DataReader
Software Utility
7.6.1 MCU Software Update
7.6.2 RF Modem Software
Update
7.7. Performing Verify and Set cycles
7.7.1 Selecting the Reader.
7.7.2 Broadcast Sessions.
7.7.2.1 Setting Session's
Parameters.
7.7.2.2 ADI Definition.
7.7.2.3 Reader Session
7.7.2.4. Single Session
7.7.2.5 Multiple Sessions
7.7.2.6 Reading the Results
7.7.3 Addressed Verify
Sessions
7.7.3.1 Single Session
7.7.3.2 Multiple
Sessions
7.7.3.3 Reading the
Results
7.7.4 SET Sessions
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Table of Contents
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7.8. Performing General Commands Cycles.
7.8.1 Selecting a Reader.
7.8.2 Selecting a Command
7.8.3 Defining Seals
7.8.4 Setting the System Session Duration
7.8.5 Setting the Command Parameters.
7.8.6 Single or Continuous Sessions.
7.8.7 Commands.
7.8.7.1 Verify Command
7.8.7.2 Tamper Command
7.8.7.3 Addressed Verify
7.8.7.4 Set
7.8.7.5 Soft Set
7.8.7.6 Suspended Set
7.8.7.7 Read Data
7.8.7.8 Write Data
7.8.7.9 Read Parameter
7.8.7.10 Write Parameter
7.8.7.11 Reset Data
7.8.7.12 Deep Sleep
7.8.7.13 Hard Wakeup
7.8.7.14 Start Alert Burst
7.8.7.15 Start Alert Burst (all)
7.8.7.16 Stop Alert Burst
7.8.7.17 Stop Alert Burst (all)
7.8.7.18 Ack Alert
7.8.7.19. Read Events
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Table of Contents
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8. Troubleshooting
8.1. DataReader Troubleshooting
8.2. Evaluation System Troubleshooting
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208
208
9. Technical Specifications
9.1. 24v Outdoor DataReader
9.2. 12v Outdoor DataReader
9.3. 48v Outdoor DataReader
9.4. 24v Indoor DataReader
9.5. 12v Indoor DataReader
9.6. 48v Indoor DataReader
9.7. DataSeal
9.8. Magnetic DataSeal
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10. Index
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14
Chapter 1
Introduction
1
Introduction
1.1. About the Product
Thank you for choosing Hi-G-Tek quality products.
The Hi-G-Tek range of products provides a highly reliable and secure
cargo and asset monitoring system utilising state-of-the-art RFID
technologies.
Cost-effective, more reliable and more secure than their mechanical
counterparts, the Hi-G-Tek product range will constantly
monitor your assets and alert you to any potential problems
at all times.
The Hi-G-Tek system was developed in order to fill the requirement
for fast, automatic processing of secured cargoes and to provide real
time monitoring and improved management of cargoes both in
transit and in storage.
The reusable electronic seal automates the processing of secured
cargoes enabling the organization to effectively and economically
process the increasing numbers of containers' traffic in the ports
and between inland destinations.
The DataSeal is a sophisticated device, which includes a
transmitter/ receiver unit, real-time clock, processor, memory
and sensing circuitry for sealing verification. The Sealing Wire
prevents any attempt of opening, bypassing or tampering with the
seal without alerting the system and recording of the event. The
system combines the technological and operational advantages of
both low frequency close-range data management AND high
frequency long range sealing verification and automatic data
collection.
DataSeal's ability to log data and communicate it through a
Handheld DataTerminal is best used In low frequency/short range
applications. This way the electronic manifest of the sealed cargo
can be written into the DataSeal's memory. The information includes
Vehicle ID, container and invoice numbers, cargo description,
quantities, destination, etc. Capable of logging up to 55 events, the
information can be downloaded into a computerised database for
storage and processing.
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1
Introduction
When used in high frequency/long range applications, the DataSeal
is capable of communicating its ID and status to a distance of up to
30 meters. The DataSeal transmits the information in reply to an
interrogation by the DataReader. The ability of the DataSeal to
communicate with the DataReader at long range enables the use
of the DataSeal in applications such as: tracking and sealing
verification of containers in transit, protection of containers in storage,
remote, automatic data collection from secured cargoes as they pass
through check points, etc.
The handheld DataTerminal is used for writing information into the
DataSeal's memory at the departure point and retrieving the
information at the destination. Events, logged in the DataSeal's
memory are also downloaded into the DataTerminal for later office
use.
The DataReader is used in long range applications to interrogate the
DataSeals over the high frequency channel for their ID and Status.
The DataReader is also used for writing information into the DataSeal
and retrieving logged information from the DataSeal. Each
DataReader can communicate with numerous DataSeals
simultaneously and verify their presence and status. The DataReaders
can be chained to allow coverage and protection for secured cargoes
in large storage yards and ports. The DataReader has an optional
communication modem which allows the system to transmit the
collected information through available communication channels to
the Control Center. The DataReader is available in both outdoor and
indoor models.
A set of Mounting Fixtures has been developed for the DataSeal
system which allow convenient mounting and removal of the
DataSeal whenever required. The various Mounting Fixtures differ
in the level of protection they provide to the DataSeal as may be
required in various environments.
This User's manual includes all the information required for
installing and operating Hi-G-Tek Electronic Seals and
DataTerminals.
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Introduction
Software License Agreement
Information in this document is subject to change without notice and
does not represent a commitment on the part of the manufacturer. The
software described in this document is furnished under license
agreement or nondisclosure agreement. It is against the law to copy
the software on any medium except as specifically allowed in the license
or nondisclosure agreement. The purchaser may make one copy of the
software for backup purposes. No part of this manual may be reproduced
or transmitted in any form or by any means, electronic or mechanical,
including photocopying, recording, or information storage and retrieval,
for any purpose other than for the purchaser's personal use, without
written permission.
c Copyright 2001 Hi-G-Tek Ltd.
All rights reserved.
TM
DataSeal is a tradmark of TydenTek.
PentiumTM is a trademark of Intel Corporation.
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Introduction
1.2. System Components
1.2.1. The Mounting Fixture
The DataSeal Mounting
Fixture is used to mount
the DataSeal on the
container's keeper bar
or other surface.
1.2.2. The Seal
The DataSeal unit
contains the DataSeal
electronics, a battery,
a transceiver, a
processor and memory
to record and store the
events and the
relevant information
about the cargo.
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Introduction
1.2.3. Seal Wire
The DataSeal Wire serves
to seal the cargo.
Any tampering with the
DataSeal Wire at any
point during transport is
recorded and reported at
once.
1.2.4. Outdoor DataReader
The Hi-G-Tek DataSeal
System uses state-of-the
-art technology to
secure and monitor
secured cargoes in
storage and during
transport.
The DataReader is
comprised of two
compartments. The upper
compartment is the heart
of the unit and contains
the DataReader's
electronics section. The
lower compartment contains
the terminal glands which
connect the unit to the
networking cable.
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Introduction
The DataReader may be used in both stationary and mobile
configurations.
In the stationary configuration, the unit is mounted on a flat stationary
surface such as a wall or pole. A typical installation of this configuration
is at the point of exit from ports, customs terminals, warehouses, etc.
This operation mode allows monitoring of the seal at predetermined
sites and checkpoints.
In the mobile configuration, the unit is mounted in the truck cabin.
The DataReader monitors the seal during the entire journey, and reports
its status via the vehicle's communication system to the control center
in real-time.
The DataReader is mastered by a host computer. Once installed, the
unit waits for commands coming from the host computer.
Outdoor DataReader
Antenna
Upper Compartment:
Electronics Bay
LED Indicators
Lower Compartment:
Cable Connection
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Introduction
1.2.5. Indoor DataReader
Similar to the outdoor
version, the indoor
DataReader uses state-of
-the-art technology to
secure and monitor
secured cargoes in an
indoor environment.
The Indoor DataReader may be used in stationary configuration
only.
In the stationary configuration, the unit is mounted on a flat surface
such as a wall or pole. A typical installation of this configuration
is at the point of exit from ports, customs terminals, warehouses, etc.
This operation mode allows monitoring of the seal at predetermined
sites and checkpoints.
The DataReader is mastered by a host computer. Once installed, the
unit waits for commands coming from the host computer.
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Introduction
Indoor DataReader
Antenna
Electronics Bay
LED Indicators
Cable Connection
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1
Introduction
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Chapter 2
DataSeal
Installation
2
DataSeal Installation
2.1 DataSeal Installation
step 1.
To install the DataSeal Mounting Fixture, attach
the fixture to the keeper bar at the back of the
container (fig.1). A click indicates that the
fixture is in place.
Fig. 1
The two side slots may be used to secure the
mounting fixture to the container, using
a 3-5mm width by 180-250 mm length
plastic strap (fig 2).
Fig. 2
step 2.
To install the DataSeal, hold the unit at a 45
angle as illustrated and snap it into place in its
cradle on the DataSeal Mounting Fixture. (fig. 3)
Fig. 3
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2
DataSeal Installation
step 3.
To connect the DataSeal Wire, simply attach
one end of the seal wire conectors to either of
the sockets at the base of the DataSeal (fig 4).
Fig. 4
Loop the wire through the container locking ring
and the keeper bar, then insert the end into
the other socket (fig. 5).
Fig. 5
Alternatively, you may loop the wire through both
keeper bars then insert the end into the
other socket (fig. 6).
Fig. 6
FCC ID: OB6-IGRS40916
This device complies with Part 15 of FCC rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) This device must accept
any interference that may cause undesired operation.
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Chapter 3
DataReader
Installation
DataReader Installation
3.1 Outdoor DataReader Installation
The DataReader should be mounted on a smooth, flat surface.
To mount the unit, insert 4 screws into the slots on the unit and
fix to the surface.
A 6mm plastic anchor and 35mm pan head tapping screw
is recommended.
3.1.1. Connecting the Outdoor Unit
* Note: The electronics compartment panel should only be
opened by an authorised repair person. Unauthorized use
may result in loss of warrenty.
Remove the cover on the bottom portion of the DataReader unit
cover by removing the screws holding it in place.
Remove the covers from the glands being used.
Expose the wires in the cable and insert them into the terminal
blocks. Use a small screwdriver to push the wires in. Ensure wires
are inserted in the slots in accordance with the color scheme.
See section 3.4. of this manual for wiring information.
TB3
TB2
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3
DataReader Installation
3.1.2 Ceiling Installation
DataReader Ceiling Unit. Antenna is perpendicular to ceiling.
The DataReader can be mounted on the ceiling.
In such cases it is requested to mount the antenna perpendicular
to the ceiling using a 900 connector.
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DataReader Installation
3.1.3 Wiring the Outdoor DataReader
The DataReader may be connected to the network via three types of
serial communication:
RS485 Full Duplex1.
RS485 Half duplex.2.
RS232 (different model number)3.
According to the DataReader model in use, the serial connection
can be either RS232 or RS485 (see Technical Specifications).
When the reader is connected using RS485, it can be set by the user
to full duplex mode or half duplex mode by altering the switch
configuration. For further information see sections 3.1.4.-3.1.6.
Switch Position
TB3
TB1
ON
TB2
S1
S4
S2
S6
S3
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DataReader Installation
3.1.4 DataReader Configuration Switches
S1:
Reader configuration setup switch; Future use.
Default position: OFF.
S2:
Termination ON/OFF switch.
While ON, connects an internal 120 Ohm termination
resistor to the RS485 chain.
Default position: OFF
S3, S6:
Full/Half duplex switches.
While OFF: Full duplex mode is set
While ON: Half duplex mode is set
Default position: OFF
S4:
Reader shut-down switch.
While OFF: Reader is active
While ON: Reader is not powered
Default position: OFF
3.1.5. RS-232 Wiring Diagram
TB3
15
14
13
12
11
10
TB1
NO
NC DRY CONTACT OUTPUT
+ ISOLATED OUTPUT
+ ISOLATED OUTPUT
ISOLATED INPUT
+ LED OUT
+ EXT.INTERRUPT INPUT
CHASSIS GND
CHASSIS GND
SIGNAL GND
READER RX RS232
READER TX
+ POWER IN
TB2
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DataReader Installation
3.1.6. RS-485 FullDuplex Wiring Diagram
TB3
15
14
13
12
11
10
TB1
NO
NC
DRY CONTACT OUTPUT
ISOLATED OUTPUT
ISOLATED OUTPUT
ISOLATED INPUT
LED OUT
EXT.INTERRUPT INPUT
CHASSIS GND
CHASSIS GND
TXA
TXB
SIGNAL GND
RS485 IN
RXA
RXB
+ POWER IN
TB2
TXA
TXB
SIGNAL GND
RS485 OUT
RXA
RXB
+ POWER OUT
3.1.7. RS-485 Half Duplex Wiring Diagram
TB3
15
14
13
12
11
10
TB1
NO
NC DRY CONTACT OUTPUT
+ ISOLATED OUTPUT
+ ISOLATED OUTPUT
ISOLATED INPUT
+ LED OUT
+ EXT.INTERRUPT INPUT
CHASSIS GND
CHASSIS GND
SIGNAL GND
RS485 IN
TX/RX-A
TX/RX-B
+ POWER IN
TB2
SIGNAL GND
RS485 OUT
TX/RX-A
TX/RX-B
+ POWER IN
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DataReader Installation
3.2. Indoor DataReader Installation
The DataReader should be mounted on a smooth, flat surface.
To mount the unit, insert 4 screws into the slots on the unit and
fix to the surface.
A 6mm plastic anchor and 35mm pan head tapping screw
is recommended.
3.2.1. Connecting the Indoor Unit
* Note: The electronics compartment panel should only be
opened by an authorized repair person. Unauthorized use
may result in loss of warranty.
The indoor unit has three connector sockets at its base. Connector
socket P1 is for incoming communications and power-in. Socket
P3 is used to transfer power and to connect the unit to the next unit
in a daisy chain.
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DataReader Installation
3.2.2 Ceiling Installation
DataReader Ceiling Unit. Antenna is perpendicular to ceiling.
The DataReader can be mounted on the ceiling.
In such cases it is requested to mount the antenna perpendicular
to the ceiling using a 90 0 connector.
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DataReader Installation
3.2.3 Wiring the Indoor DataReader
The DataReader may be connected to the network via three types of
serial communication:
RS485 Full Duplex1.
RS485 Half duplex.2.
RS232.3.
Each of the above is a different model number.
According to the DataReader model in use, the serial connection
can be either RS232 or RS485 (seeTechnical Specifications).
The RS485 connector is always optically isolated.
DB15
PIN Arrangement
10
15
11
DB9
PIN Arrangement
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DataReader Installation
3.2.4. RS-232 Wiring Diagram
Pin assignment for PWR/COM IN & PWR/COM OUT
Function
Pin Number
Positive Power
Positive Power
Signal GND
Negative Power
Negative Power
TX
RX
3.2.5. RS-485 FullDuplex Wiring Diagram
Pin assignment for PWR/COM IN & PWR/COM OUT
Function
Pin Number
Positive Power
Positive Power
Signal GND
Negative Power
Negative Power
RX-A
RX-B
TX-A
TX-B
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DataReader Installation
3.2.6. RS-485 Half Duplex Wiring Diagram
Pin assignment for PWR/COM IN & PWR/COM OUT
Function
Pin Number
Positive Power
Positive Power
Signal GND
Negative Power
Negative Power
TX/RX-A
TX/RX-B
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3
DataReader Installation
3.3. Chaining DataReaders Together
Up to 32 DataReaders can be connected in a daisy chain using
RS485. The last reader in the chain should be terminated by a
120 Ohm resistor between the RXA and the RXB.
For the Outdoor version, the user can decide to create either an
internal or external termination switch. The internal termination
switch is created by setting to ON the termination switch (S2) of
the last reader in the daisy chain.
An external termination is relevant for the Indoor version only. An
RS-485 to RS-232 adapter termination should be provided for the
adapter receive channel.
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DataReader Installation
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DataReader Installation
3.4. RS-232/RS-485 Adapter
Adapter's requirements:
- Full/Half duplex operation mode
- Isolated communication lines
Recommended adapter: Moxa Technologies, model A51
Adapter configuration: (refer to adapter's User Manual)
1. Communication mode (either half or full duplex)
2. Txd: always enable
3. Rxd: always enable
Default configuration of the Moxa A51:
- Full Duplex mode
- Txd always enable
- Rxd always enable
3.4.1. Connecting the RS-232/RS-485 Adapter to the First Reader
The Rx and Tx lines should be crossed between the adapter and
the first reader as follows:
Reader
Reader
RXA
RXB
TXA
TXB
TXA
TXB
RXA
RXB
SIG-GND
SIG-GND
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DataReader Installation
Moxa A51 Wiring:
MOXA
Reader TB1
PWR+
TXB
PWR-
TXA
RXB
RXB
RXA
RXA
GND
GND
TXB
PWR-
TXA
PWR+
Terminal
Block
3.4.2. Connecting the RS-232/RS-485 Adapter to the Host
RS-323 3-wire connection should be performed between the
adapter and the host. (Other control signals beside the Rx, Tx and
GND are not required).
Rx and Tx should be crossed, as follows:
Adapter
Rx
Tx
GND
Host
Rx
Tx
GND
The Moxa A51 is connected to Host with RJ45/DB25 cable
supplied with the adapter. If the Host has a DB9 connector, a
DB25/DB9 adapter should be used.
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DataReader Installation
3.5. Power Supply Requirements
The DataReader supply voltage is chosen according to the
model, either 12V, 24V or 48V.
Power supply wattage: each Reader consumes maximum 1.7W,
so the power should tolerate the number of Readers in the chain
multiplied by each Reader's power consumption.
EXAMPLE:
10 Readers connected in a daisy chain require
10X1.7=17W power supply.
Note that if the power supply is installed in a high temperature
area (usually above 40 C), there is a derate in power supply
wattage. (Refer to power supply manual).
For safety reasons, power supply current should be limited to 3A.
Current limitation should be done internally in the power supply, or
externally with a 3A fuse.
In vehicular installation, a 1A fuse must be used.
In outdoor and indoor system, the power supply should be installed
indoor. For outdoor system, approved power supplies are:
For Indoor system, the power supply should be UL1950 approved.
A desktop style with IEC320 inlet is recommended.
When power supply cable ends are connected directly to system cable,
a proper isolation should be made. Using heat shrink tube is
recommended.
3.6. Cable Selection
The cable is used for power supply to Readers in a chain and for
RS-485 serial communication.
For most applications, 3 or 4 pairs of 24AWG shielded cable is
adequate.
The serial communication requires shielded twisted pair cable,
the power supply requires low ohmic resistance of the conductors.
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DataReader Installation
Cable connection:
1 pair for RXA and RXB signals.
1 pair for TXA and TXB signals
SIGNAL GND may be connected to shield or to a pair of wires
(shield connection is recommended, though it depends on the
noise level of the specific environment).
Supply: Two main issues should be considered, max current
carrying capacity and wire resistance.
Max current capacity: For 24AWG cable , the jacket is heated at 1 C
at 0.1A current, max temperature is 80 C. So, this cable can carry a
max of 2A at 60 C. ( (80-60)*0.1 ).
This calculation should be done for the application specific
requirements.
Wire resistance: The voltage drop across the cable may cause
insufficient voltage to the last readers in chain. Calculation of voltage
drop in a certain setup should be done, in order to avoid this.
In most cases, the solution for such problems includes , connecting
a pair of wires for the supply ( 2 for supply and 2 for return), using
thicker cable, or using higher temperature rated cable.
Environmental considerations: In an outdoor installation ,the cable
should withstand all outdoor conditions, that is water proof,
temperature,ruggedness etc.
Example:
A setup of 10 DataReaders with 20 meter 24AWG cable between
Readers and 24v supply to the first Reader
The ohmic resistance between Readers is 3.4 Ohms (20 meter
of supply and 20 meters of return). Calculating the voltage drop
across the lines gives 5v only, left to the last Reader in the chain.
This is below Reader specification of Reader minimum supply voltage.
If two conductors are used for supply and return, the ohmic
resistance would be 3.4/2=1.7 ohm. The voltage to the last Reader
in the chain would then be 17v, well above the minimum voltage
required.
If you experience difficulty calculating the voltage drop across the
supply line, contact your distributor for assistance.
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DataReader Installation
3.7. Installation notes
3.7.1 The DataReader is distributed to a commercial/industrial use
only, and cannot be sold to the general public.
3.7.2 Installation must be performed according to this user manual,
and by an authorized personnel only.
3.7.3 It is the responsibility of the installer to ensure that when using
the outdoor antenna kits in the United States (or where FCC rules
apply), only those antennas certified with the product are used.
The use of any antenna other than those certified with the product is
expressly forbidden in accordance with FCC rules CFR47 part
15.204."
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Chapter 4
DataReader
Operating
Instructions
4
DataReader Operation Instructions
Hi-G-DataReader Operation
Three LED light indicators are located
on the left-hand side of the electronics
compartment.
Power: The DataReader is activated by connecting it to a power
supply. At power ON and self-test the power indicator alternates
between the GREEN and RED indicators for several seconds.
If the check result is OK, the indicator remains GREEN. If a
problem was detected, the indicator remains RED.
When performing firmware download:
- MCU download, the indicator alternates between GREEN
and RED
- AVR- the indicator remains off
Channel 2 SD/RD:
When the indicator is red, the unit is in SD (sending data) mode.
When the indicator is green, the unit is in RD (receiving data) mode.
When the indicator is off, it is in stand-by mode.
Channel 1 SD/RD:
This channel is optional. The indicators operate in an identical
manner to those for channel 2:
When the indicator is red, the unit is in SD (sending data) mode.
When the indicator is green, the unit is in RD (receiving data) mode.
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