ProSoft Technology MVI56-LTQ User Manual
Page 81
MVI56-LTQ ♦ ControlLogix Platform
Reference
Limitorque Valve Actuator Master Communication Module
User Manual
ProSoft Technology, Inc.
Page 81 of 98
August 30, 2010
The ProSoft Technology LTQ Master Module is pre-programmed to support a
subset of the Modbus protocol. The commands are hard coded into the module
and have been selected to implement specific functionality. The programmed
commands are documented in the following table.
Command
Function
Modbus
Function
Code
Register
Address
Count or
Write
Value
Description
Poll Slave
3
40008
6
Command is executed automatically to
any slave in the Active Slave Table
Open Command
6
40001
256
Open Command (Interlocked with
Close Command in the slave)
Stop Command
6
40001
512
Disengages Open or Close
Close Command
6
40001
768
Close Command (Interlocked with
Open Command in the slave)
Start Network ESD
6
40001
1280
Initiates Network ESD function in the
addressed slave
Stop Network ESD
6
40001
1536
Terminates Network ESD function in
the addressed slave
Reset
6
40001
1024
Engage Relay #1
6
40001
2304
Engages Relay #2 (I/O Module)
Engages AS-1 (MX-DDC)
Engage Relay #2
6
40001
2560
Engages Relay #1 (I/O Module)
Engages AS-2 (MX-DDC)
Engage Relay #3
6
40001
2816
Engages Relay #3
Engages AS-3 (MX-DDC)
Engage Relay #4
6
40001
3072
Engages Relay #4 (I/O Module)
Engages AS-4 (MX-DDC)
Engage Relay #5
6
40001
3328
Engages Relay #5 (I/O Module)
Engages AR-1 (MX-DDC)
Engage Relay #6
6
40001
3584
Engages Relay #6
Engages AR-2 (MX-DDC)
Disengage Relay #1 6
40001
4352
Disengages Relay #2 (I/O Module)
Disengages AS-1 (MX-DDC)
Disengage Relay #2 6
40001
4608
Disengages Relay #1 (I/O Module)
Disengages AS-2 (MX-DDC)
Disengage Relay #3 6
40001
4864
Disengages Relay #3
Disengages AS-3 (MX-DDC)
Disengage Relay #4 6
40001
5120
Disengages Relay #4 (I/O Module)
Disengages AS-4 (MX-DDC)
Disengage Relay #5 6
40001
5376
Disengages Relay #5 (I/O Module)
Disengages AR-1 (MX-DDC)
Disengage Relay #6 6
40001
5632
Disengages Relay #6
Disengages AR-2 (MX-DDC)
Send Valve Position
Value
6
40002
Value from
PLC
Position to move actuator
0 to 100% of Open
Enable Valve
Position Value
6
40001
6656
Move-To (enable)
Poll Slave Special 1 3
40055
1
Command is executed automatically if
Special Polling is set to 1
Poll Slave Special 2 3
40006
2
Command is executed automatically if
Special Polling is set to 2