Thanks for your replies and offers / help.
In my own notes I also found that the round connector for the DMOC is the PT06E-14-19P and the Siemens motor side could be the Amphenol MA3CG-S2.
I've ordered those two and can confirm the DMOC one fits. Have not been able to test the Siemens one or compare it with the 85106EC1419S50.
But I expect it all works out.
Regards,