Rockwell Automation 57C445 AutoMax PC Link Interface Module - Manual (Page 47)

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3.4.3 Accessing Remote I/O Registers (RIODEM)
RIODEM is a sample program which shows how to access the data
table and the status registers on the PC Link module. Figure 2 shows
a listing of all the drops on the remote I/O network. Figure 3 shows
the data table for the remote I/O network.
Figure 2 Ć Remote I/O Drop Status
Figure 3 Ć Remote I/O Data Table