Rockwell Automation 20-750-PNET Profinet Single Port Option Module - Manual (Page 25)

Rockwell Automation Publication 750COM-UM006A-EN-P - January 2013 25
Installing the Option Module Chapter 2
This ensures that any Reference commanded from the network can be
monitored by using drive Parameter 002 - [Commanded SpdRef ]. If a
problem occurs, this verification step provides the diagnostic capability to
determine whether the drive/option module or the network is the cause.
4. If hard-wired discrete digital inputs are not used to control the drive, verify
that all unused digital input drive parameters are set to ‘0’ (Not Used).