Access PMEPXM0100 CIP Object Via DATA_EXCH When Class Is Greater Than 2 Bytes

[bw-s32]

Given that the firmware of the PXM is not available in the supplied DDT (using firmware 1.005 / CE15.2) I have been attempting to pull the firmware version data through to an M580 using the DATA_EXCH function. This is indicating that the object doesn't exist (Response Code 16) in my response. I am attempting to access the CIP object "12.5.1. PXM GENERAL STATUS" from the user manual v1.06. I am using a Request Size 16#04, Service Code 16#0E, Class / Class Segment 16#0301, Instance / Instance Segment 16#0124, Attribute / Attribute Segment 16#0130 using the CPU as the host slot for the transaction '0.1.0' and UNC.CIP protocol. Note that the PXM does not currently have a loaded configuration but I wouldn't think this would be required.