@Grandapa_Jack Please ignore my previous request. I screwed things up by having a copy of PyP100.py in directory /home/pi Now this is removed, everything is working OK. - many many thanks I'm a happy...

@Grandapa_Jack I’m running Linux on a Raspberry Pi. Python 3.7.3 A recently installed P100 updated its firmware to 1.2.1 Build 230804 Rel 190922 Thanks Grandpa_Jack for the link to the required...