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Thx it's ok now.

I just buy ProfiLux Touch and after setup everything okay. But I cannot see it in the PLC. I am using PLC 5.09.1 and P3ex fw 5.09

It works well in English Windows. I think PLC do not work properly in the Chinese Windows

THX Matthias for your fast reply
I try to find the English Windows. The new version Window7 will it compatible with Profilux?

I have attach my screenshots
I have force change the COM port number in Windows and change accordingly in PLC but not help

Thx Matthias

I cannot connect to PLC by USB-USB to my pc. I have read all the instruction from this forum. I change COM port match to PLC . I tried with or without RS485 delay. I always get the error code :28 ....