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WinCC V8 <-> V7.4 communication

12/20/2024 9:22 AM	Rate (0)
Mako2 Experienced Member Joined: 11/12/2012 Last visit: 9/3/2025 Posts: 39 Rating: (3)	Hello, never done that, so we have to read some tags from WinCC 7.4 and display them in WinCC V8. What do you suggest ? Thanks

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12/30/2024 8:32 AM	Rate (1)
Murof Platinum Expert Joined: 8/3/2009 Last visit: 9/5/2025 Posts: 16349 Rating: (1932)	Hello Mako2 You could use OPC UA (OPC UA Server in WInCC requires Connectivity pack License) This Example is a little bit older but could also help: https://support.industry.siemens.com/cs/ww/en/view/109479664 (Some details could be different in newer WinCC Versions) If you have the same PLC then you can also change information with PLC tags Bye Murof
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