ProSoft Technology MVI56-AFC - Manual (Page 197)

MVI56-AFC ♦ ControlLogix Platform MVI56-AFC Backplane Communication
Liquid and Gas Flow Computer User Manual
ProSoft Technology, Inc. Page 197 of 316
February 25, 2011
Input Function Block ID
When the AFC completes processing the output function block, the input function
block ID is returned with the Modbus Message block as described above. The
AFC provides a number of indicators to allow you to design the PLC logic to take
appropriate action once the controller receives the message in the returned IFB.
Function Block Name: Modbus Gateway Write
Function Block ID: 20 and 21
Target: Global
Data Block Length: User defined - from 3 to 244
Total Block Length: (User defined +1) Elements