Dear All,

I have used an old program which has the PLC program and HMI integrated together for migration. I only woul like to change the old touch pnel from TP177B to TP700 but all PLC remain the same. I have migrate only the HMI to TIA . I will load the HMI using TIA and the PLC using Siemens Simatic. Will these work??? or do I need to migrate both the PLC software and the HMI to TIA then it will work???

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Split from Migration Wincc flexible advanced(step7) to Wincc (TIA Portal).

Hello,

yes is possible to migrate the HMI only.
But this only work if you never change anything in the data of the PLC.

For the usecase PLC in Step7 V5.x and HMI in TIA there a few guidelines:

Here you find a overwiew combined configuration

in this document you find a explanation for the device proxy

Regards

Christoph