I don't want to do total reinstall of windows and all soft.

On another PC with Windows 10 2004 simulation of KTP600 also shows - could not be written to plc. With KTP700 no problems.

So, KTP600 can work with  the real project, but not in simulation mode.

Thanks to all for your ideas and help! Good luck ! :)

0_Einstein

Then it might be a windows problem, though I doubt it.

The right answer is to use a newer HMI.  Alternative is use older TIA Portal version that can simulate your V12 firmware HMI.  Your V16 license covers all prior versions of TIA Portal.

artur2705

 With ABSOLUTE ADDRESSING the resault is the same - no simulation 

 

Hi, I'm having the same problem but with TIA Portal V17. Can not write neither from the simulator nor the physical HMI.