3/12/2020 3:56 AM | |
Joined: 7/5/2013 Last visit: 9/19/2024 Posts: 3112 Rating: (512) |
Hello David, the commercial solution would be Audit Trail, see GMP-compliant Configuration with WinCC Comfort/Advanced, WinCC Audit and HMI-Panels. With some effort you can do it on your own, too. - On startup copy the tag-value to an internal tag - On event value change of the tag write internal (old) value and current value to a file and then copy the tag-value to the internal tag Regards, Frink |
Pi is exactly three! |
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