Rockwell Automation 1407-CGCM Combination Generator Control Module - Manual (Page 129)

Rockwell Automation Publication 1407-UM001G-EN-P - April 2013 129
CGCM Unit Software Interface Chapter 6
Operating Interfaces
In normal operation, the ControlLogix controller and the CGCM unit share
operating data through scheduled and unscheduled ControlNet network
messaging.
The overall functions and detailed content of the CGCM unit data tables are
described in the next section.
Simplified logic rung to send the Unscheduled Write message from the controller to the 1407-CGCM after the Configuration write has
been accepted. Enable_UW is a user-defined permissive interlock. CGCM:I.ConfigRcvd asserted indicates that the CGCM has
accepted the scheduled Configuration write. After a configuration write, the CGCM turns off CGCM:I.UnscheduledWriteRcvd,
completing the rung input logic. The one-shot fires the message instruction only once.
Enable_UW CGCM:I.ConfigRcvd CGCM:I.UnschdWriteRcvd
EN
DN
ER
MSG
ONS
shot1
Type - CIP Generic
Message Control
msgWriteUW
IMPORTANT
The user is responsible for initiating all unscheduled messaging through
the user program.