ProSoft Technology MVI56E-MCMR - Manual (Page 153)

MVI56E-MCMR ♦ ControlLogix Platform Reference
Modbus Communication Module with Reduced Data Block User Manual
ProSoft Technology, Inc. Page 153 of 225
May 13, 2014
Module Status Block (9250)
The General Module Status block contains some basic information about the
module itself and diagnostic counters to help monitor activity on each port and
across the ControlLogix backplane. The block can be requested as needed and
is available regardless of whether the module's ports are configured as Masters
or Slaves. Use block identification code 9250 to request this General Module
Status block.
This block of data is requested using the "Get Attribute Single" service type MSG
instruction.
The following table describes the format of the 33-word data block returned to the
processor by this MSG instruction.
Block Response from Module to Processor
Word Offset Content Description
0 Program Scan Count This value is incremented each time a complete
program cycle occurs in the module.
1 to 2 Product Code The four bytes of these two words contain the ASCII
code values of the 4-letter product code.
3 to 4 Product Version These two registers contain the product version of the
current running module firmware.
5 to 6 Operating System These two registers contain the month and year
values for the program operating system.
7 to 8 Run Number These two registers contain the run number value for
the currently running software.
9 Port 1 Command List
Requests When Port 1 is a Master, this field contains the
number of requests made from Port 1 to Slave
devices on the network.
10 Port 1 Command List
Response When Port 1 is a Master, this field contains the
number of Slave response messages received on the
port.