Hi guys,

I am working on s71200 plc, which is installed on site. the Scada is Tia portal v20 Professional.

since the existing system is providing monitoring only, no control, so i made some amendments in the plc program and also created new tags for input and output.

Now when i work on the SCADA pc, add buttons for ON/OFF but cannot connect with the plc.

And create some internal tags and start simulation but cannot connect ,internal tags also not communicate .

any advice on this will be appreciated. Thanks in advance

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Split from cannot communicate scada-PC with s71200 plc on site.