Power Meter 750 (PM750) Communications Loss in System Manager Software (SMS) v4.0.1 or v4.0.2 - Error Code 4008 in the SMS Activity Log

Support for the PM750 was added in Service Update 3 for SMS Version 4.0. In SMS v4.0.2, PM750 devices in the system show Communication Loss alarms, even though the user can still read registers from the devices. The Error Code in the Activity Log associated to the Comm Loss alarms is 4008, which denotes an invalid "Square D ID". In other words, the PM750 is not supported in that version. Running the Service Update 3 install will upgrade SMS to version 4.0.3. At this version, the PM750 is fully functional and the Communication Loss alarms should clear.
Keywords: v4.0.3, SU3, PM7