Reference MVI56-MCM
♦
ControlLogix Platform
Modbus Communication Module
ProSoft Technology, Inc.
Page 123 of 159
July 24, 2008
Tag Name
Data Type
Description
RTSOff
INT
0-65535 milliseconds delay after data
MinResp INT
0-65535 milliseconds minimum time before response to
request
UseCTS
INT
0=No, 1=Yes to use CTS modem line
SlaveID
INT
1-255 Modbus Node Address (Slave)
BitInOffset
INT
Internal DB offset to bit input data (Slave)
WordInOffset
INT
Internal DB offset to word input data (Slave)
OutOffset
INT
Internal DB offset to bit output data (Slave)
HoldOffset
INT
Internal DB offset to holding register data (Slave)
CmdCount
INT
Command list count (Master)
MinCmdDelay INT
0-65535 milliseconds minimum time between each
command (Master)
CmdErrPtr
INT
Internal DB location to place command error list (Master)
RespTO INT
0-65535 milliseconds response timeout for command
(Master)
RetryCount
INT
Retry count for failed request (Master)
ErrorDelayCntr
INT
0-65535 Command cycle count if error (Master)
Reserved
INT
Reserved (Previously was UseGuardBand parameter)
InterCharacterDelay INT
0-65535 milliseconds time between characters to signal
end of message
Fcn99Offset
INT
Internal DB offset to function 99 counter
MCMCmd
This object contains the attributes to define a master command. An array of
these objects is used for each port.
Tag Name
Data Type
Description
Enable INT 0=Disable,1=Continuous,2=Event
Command
IntAddress
INT
Module's internal address associated with the command
PollInt INT Minimum number of seconds between issuance of
command (0-65535 Sec)
Count
INT
Number of registers associated with the command
Swap
INT
Swap code used with command
Node
INT
Node address of the target device on the network
Func
INT
Function code for the command
DevAddress
INT
Address in device associated with the command
8.8.3 MCMDATA
Contains Read Data (data read from the module to the processor) and Write
Data (data written from the processor to the module).
Tag Name
Data Type
Description
ReadData
INT[600]
Data read from the module to the processor
WriteData INT[600]
Data
written
from the processor to the module
