Rockwell Automation T7491 ICS Regent+Plus Mixed I/O Modules - Manual (Page 12)

Multiplexed I/O Module (T7491)
1 2
Industrial Control Services
Figure 6. The Matrix Interface Module Dialog.
3) Define the MIU Processors:
After selecting the Protocol and Baud Rate in step 2,
choose Edit ( or Insert) from the Matrix Interface Dialog
Box. Another dialog box will open where you can define
the configuration for the MIU Processor.
Figure 7. Configuring a Mux I/O Processor Unit.
Select the Mux I/O module port that the MIU processor
will be connected (1 or 2 if single protocol, 1 if dual
protocol). Enter the ID number for the MIU processor (2