I have a problem regarding uploading parameters from HMI. I have adressed them and all, but how can I upload the parameters from HMI to the PLC? In Comissining you have the option upload pid parameters, and then you need to download the project to the PLC before using it. But how is this possible from the HMI panel?

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Split from How to set up a PID_compact s7-1200 if:.

As I understand your problem , in case you download the original machine program and difference between PID data set in PLC and HMI and you want to transfer valid data from HMI to PLC.If this is your case, I think defining a button and transferring batch of valid parameters to PLC is one way.