Hi Steve.
This is the update for my problem with the PCM301.
I asked the plant for availability of a CMM311 as you mentioned, coincidentally they had one, not in the best conditions but we tried to test it.
The next thing was to Replace the PCM301 with the CMM311.
I set the operating mode to SNP / RTU, then the RTU parameters and match it with the Omron SCU42.
With that I was able to get the data from GeFanuc CPU331.
Module: IC693CMM331N
Thanks Steve.