Thanks for the reply.
We have tried it several times but I tried it in the morning one more time configuring a new HMI with the same problem.

The hardware configuration is:
PLC:  CPU-1516F-3
HMI:  Comfort TP1200
SW:    TIA Portal V16 Update 4

Regards

 Hello. I have the same problem? Can you get to solved it?

Thanks!

gpagpagpa

Thanks for the reply.
We have tried it several times but I tried it in the morning one more time configuring a new HMI with the same problem.

The hardware configuration is:
PLC:  CPU-1516F-3
HMI:  Comfort TP1200
SW:    TIA Portal V16 Update 4

Regards

 Hello to all!

I have the same problem,

The HMI project has 8 different PLCs and only one of the PLC is the one with this issue, the others are working properly, The error message that pops up is this:

i have checked the Edit> "Internal parameters visible/accessible from HMI" and no luck.

Thanks for any suggestion.

**UPDATE: the procedure it worked was deleting the IM folder on the project's folder and rebuilding all the software and hardware, and doing a full HW & SW download to the PLC, after this i updated the "device proxy data" and then a full rebuild at the HMI project, and then full download at the HMI, this made it work guys, thanks**

gpagpagpa

Thanks for the reply.
We have tried it several times but I tried it in the morning one more time configuring a new HMI with the same problem.

The hardware configuration is:
PLC:  CPU-1516F-3
HMI:  Comfort TP1200
SW:    TIA Portal V16 Update 4

Regards