SignalFire Telemetry M655 Telemetry Modbus Stick User Manual Manual

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Document ID	1457860
Application ID	sU5CwFdeW3AUGxQxQF0+Dw==
Document Description	Manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	29.19kB (364904 bits)
Date Submitted	2011-05-02 00:00:00
Date Available	2011-05-02 00:00:00
Creation Date	2011-04-18 08:31:05
Producing Software	GPL Ghostscript 8.15
Document Lastmod	2011-04-18 08:31:05
Document Title	Microsoft Word - 960-0003-01 SignalFire Modbus-in-a-Stick Manual Rev 5.doc
Document Creator	PScript5.dll Version 5.2.2
Document Author:	mburman

4/18/2011
Page 1 of 8
SFRSS Modbus-in-a-Stick Instruction Sheet
The SignalFire Modbus-in-a-Stick has the following features:
•
•
•
•
•
•
•
•
RS485 connection to Modbus devices
Wide range DC power input. 6 to 40VDC
Configurable check-in period and Network address
Configurable Modbus register polling and/or transparent register mode
Modbus register writes to remote nodes
Full time mesh node can forward messages from other SignalFire devices
including sleeping nodes.
Sends data to a SignalFire Modbus Gateway
Integrated 500mW FHSS 900MHz ISM band radio and high gain antenna
Modbus-in-a-Stick Connections
The Modbus- in-a-stick is supplied with a 6 conductor cable. The connections are as
follows:
Wire Color
RED
BLACK
GREEN
BROWN
ORANGE
YELLOW
Connection
Positive Power (6 to 40 VDC)
Ground
RS-485 “A”, 9600 Baud default
RS-485 “B”, 9600 Baud default
RS-232 Debug/Programming TX, 9600 Baud
RS-232 Debug/Programming RX, 9600 Baud
Status LED
The Modbus- in-a-stick has one LED available for field diagnostics.
LED
Description
Slow Flash (3 second pause)
Fast Flash (0.5 second pause)
Solid On
System is running and in communication with radio network
System is running but no network found
System Fault, needs service.
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Page 2 of 8
Operating Modes
The Modbus-in-a-Stick supports two modes of operation, a preconfigured register set,
and an automatic scanning “transparent” mode. The Modbus stick can be used in either
mode or a combination depending on the system requirements.
Pre-Configured Register set mode
This mode of operation is most useful for large data sets, and frequent polling of a set
register map. This mode requires that the Modbus stick be configured with the register
map with the configuration utility at time of installation.
In this mode the pre-configured set of registers is automatically read from the modbus
sensor device and forwarded to the Modbus gateway on a pre-defined schedule (1 minute
to 5 minutes is typical). The register data is then buffered in the gateway and is available
to be read by the RTU at any time.
Transparent Modbus Mode (version Modbus_r38 and Gateway version 7.37 and later
only)
This mode requires no Modbus setup, and can be used for smaller number of registers
that only need to be read infrequently.
Upon initial power-up the Modbus stick will automatically poll all slave ID’s (1-240) to
discover attached devices. Any devices found will be reported to the gateway so that a
wireless link will exist to the Modbus device. This scan is automatically repeated every
24 hours in the event that an additional device is added to the bus. The scan may also be
initiated from the Modbus Stick’s debug port, or remotely from the Modbus Gateway.
See the Modbus Gateway manual for register details.
When the RTU polls the gateway for a Modbus register, if the register is buffered
(meaning it was pre-configured) the buffered value is returned. If the register value is not
buffered, but the Modbus slave ID is known, the request is forwarded over the Signalfire
wireless network to the Modbus sensor, the response is forwarded back to the gateway
and delivered to the RTU. Due to the multi-hop wireless network, latency will be
introduced. It is required that the RTU’s timeout be on the order of 10 seconds to allow
for maximum possible network delays. This limits the effective amount of data that can
be pulled.
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Page 3 of 8
Setup
The Modbus-in-a-Stick requires initial configuration over the debug port. The supplied
SignalFire Modbus Configurator PC application will be used to configure the device over
the serial port.
The following items must be configured:
•
•
•
Network Selection
Check-in Period Selection (Pre-Configured Register set mode only)
Modbus Slave ID and register configuration (Pre-Configured Register set mode
only)
The optional SignalFire Connector-Breakout-Board (CBB), pictured below provides an
easy means to connect to the RS232 lines and power the device while configuring the
system.
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Page 4 of 8
The unit is configured using a PC Windows configuration application shown below:
Network Setting
The network address can be used to create multiple networks using multiple gateways
(that are in close proximity with one another).
The network setting must be the same on all units in the network including the gateway.
System Check-In Period
This setting controls how often the node will read the Modbus device and forward the
register data to the gateway.
Modbus Slave ID and Register Configuration
Note that the Slave ID must be unique within any Network group to avoid duplication in
the Gateway.
The Modbus-in-a-stick is configured by connecting the RS232 debug lines to a PC and
running the client configurator application. Two items must be configured. First the
Network and Check-in period should be selected and the “Set Configuration” button
pressed.
Second the Modbus registers that the device is to poll and forward data from need to be
configured. Set the Modbus baud rate, UART Mode, and Timeout parameters. Then, set
the slave ID’s and Modbus addresses, click the “Set Modbus Parameters” to load the
settings into the device.
Note that the register address entered is subtracted by 1 when
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Page 5 of 8
it is converted to the HEX modbus command.
Modbus Write Register Instructions
The Modbus Master device will issue a standard Modbus protocol command in RTU
format to the Gateway. The register write command will be automatically forwarded
over the air to the remote modbus device. The commands that are currently supported are
as follows:
0x05 MODBUS_WRITE_BOOLEAN (1-bit coil)
0x06 MODBUS_WRITE_REGISTER(16-bit integer),
0x06 MODBUS_WRITE_REGISTER(32-bit integer or float),
0x10 MODBUS_WRITE_REGISTERS(16-bit integer),
0x10 MODBUS_WRITE_REGISTERS(32-bit integer or float).
*For issuing multiple writes, no more than ten(10) 32-bit registers and twenty(20) 16-bit
register can be written in one command.
For more information on issuing modbus commands and their formats, please see the
Modbus Protocol. For device specific information regarding Enron Modbus protocol,
please see Enron Modbus Protocol for CB181 FCUs or Enron (AGA7) Modbus Protocol
for 6400 (5333) FCUs.
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Page 6 of 8
Remote Modbus Register Mapping
Modbus Registers
In addition to any pre-configured registers, the Modbus Stick will send system
information in 16-bit registers in the table below. This data is accessible at any of the one
of more Slave ID’s connected the Modbus Stick.
Register
65524
65525
65526
Name
AP rev# major
AP rev# minor
Radio rev#
major
Radio rev#
minor
Description
Major revision number for the mainboard
Minor revision number for the mainboard
Major revision number for the radio
65528
65529
65530
65531
65532
65533
NodeAddr (high)
NodeAddr (low)
Slave ID
RSSI
Voltage
Timeout Value
65534
65535
Register Count
Device Type
High 16 bits of SFTS node address
Low 16 bits of SFTS node address (the radio ID)
Slave ID readback
Received signal strength of last packet from the slave
System voltage of the Modbus client in millivolts
Minutes until this slave will time out, unless new data is
received
Number of registers cached for this slave device
Remote device type (0 for Modbus Client Node)
65527
Minor revision number for the radio
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Page 7 of 8
Modbus-in-a-Stick Serial Configuration and Debug Commands
The following table contains a list of useful configuration and debug commands that can
be issued over the RS-232 connection from a standard terminal program such as Putty.
Command
radio network X
checkin
radio show
radio reset
reboot
info
scan
scan show
Description
Sets the radio network to X. Generally from 16 to 23.
Causes the node to read the modbus device and forward the data
to the gateway
Displays current radio configuration information
Forces a radio reset
Forces a system reboot
Displays the current firmware versions
Starts an automatic Modbus ID scan
Displays list of discovered Modbus slave ID’s
SignalFire Telemetry - Rev 5.0
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Page 8 of 8
APPENDIX - FCC and IC Statements
Changes or modifications not expressly approved by SignalFire Telemetry, Inc could void the user’s authority to
operate the equipment.
This device complies with Part 15 of the 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 received, including
interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference
to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to
try to correct the interference by one of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help.
This device has been designed to operate with only the permanently attached internal antenna, having a maximum gain
of 5 dB. No other antenna may be used.
WARNING!
FCC and IC Radiation Exposure Statement:
This equipment complies with FCC’s and IC’s RF radiation exposure limits set forth for an uncontrolled environment
under the following conditions:
1.
2.
This equipment should be installed and operated such that a minimum separation distance of 20cm is
maintained between the radiator (antenna) & user’s/nearby person’s body at all times.
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a maximum (or lesser)
gain approved for this transmitter by Industry Canada. To reduce potential radio interference to other users, the
antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.r.i.p.) is not more than
that necessary for successful communication.
SignalFire Telemetry - Rev 5.0

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Producer                        : GPL Ghostscript 8.15
Create Date                     : 2011:04:18 08:31:05
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Title                           : Microsoft Word - 960-0003-01 SignalFire Modbus-in-a-Stick Manual Rev 5.doc
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Author                          : mburman

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