Hello Tamer
first I have to say I spread some wrong information. The PLC version of the RM 20.11 is 1.6.0 (not 1.6.1). Sorry for this.
next I want to ask, if it is possible to update your system to the RM 21.03. Here are some improvements regarding the communication stuff beween the PLC engineering and the PLC-app. (But keep in mind there are some HW/SW restrictions to make the update. The information you can find in the Collaboration room) Especially if you have renamed the ctrlX CORE there are some bigger problems solved.
If it is not possible to update the system we can try out some more issues.
open PLC engineering from ctrlX WORKS, open new project, Insert the IP at the and try to connect.
create a new (empty) configuration, activate this and try to connect with the PLC enginering.
... View more