Control Techniques UD77 DeviceNet Startup Manual page 70

The "Data File S2 – Status" tabbed dialog box will open. Click on the "Errors" tab.
"The "Errors" tab displays useful fault evaluation information. In this example, the user
went online with the Discrete Combo I/O module plugged in and active, and no rack I/O
declared in project "FIRST.RSS".
Before clearing the fault in this example, make sure that the "RUN/REM/PROG" switch
on the SLC processor is in the "REM" position.
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