Rockwell Automation 20-750-PBUS Profibus DPV1 Option Module - Manual (Page 28)

28 Rockwell Automation Publication 750COM-UM004B-EN-P - September 2012
Chapter 2 Installing the Option Module
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).