ProSoft Technology MVI56E-MNETCR - Manual (Page 113)

MVI56E-MNETCR ♦ ControlLogix Platform Reference
Modbus TCP/IP Multi Client Enhanced Communications Module for Remote Chassis User Manual
ProSoft Technology, Inc. Page 113 of 159
June 14, 2011
5.3.2 Client Command List
In order for the Client to function, the module's Client Command List must be
defined in the MNET Client x Commands section of the configuration. This list
contains up to 16 individual entries, with each entry containing the information
required to construct a valid command. This includes the following:
Command enable mode: (0) disabled or (1) continuous
IP address and service port to connect to on the remote server
Slave Node Address
Command Type - Read or Write up to 100 words per command
Database Source and Destination Register Address - Determines where data
will be placed and/or obtained
Count - Select the number of words to be transferred - 1 to 100
Poll Delay - 1/10
th seconds
5.3.3 Client Command Errors
You can use the configuration's MNET Client x Command Error Pointer, which is
separately configured for each Client, to set the database offset register where all
command error codes will be stored. This means that the first register refers to
command 1 and so on.
Offset Description
1 Command 1 Error
2 Command 2 Error
3 Command 3 Error
… ….
… …
For every command that has an error, the module automatically sets the poll
delay parameter to 30 seconds. This instructs the module to wait 30 seconds
until it attempts to issue the command again.
As the list is read in from the configuration file and as the commands are
processed, an error value is maintained in the module for each command. This
error list can be transferred to the processor. The errors generated by the module
are displayed in the following table.