Simatic HMI historical data log on KTP400 HMI

Summary
Title
Simatic HMI historical data log on KTP400 HMI
Description

In this example we configure the Simatic KTP400 HMI to log some data from Simatic S7 1214 PLC on change (of PLC tags) and also on demand of another trigger PLC tag. HMI time is also taken from PLC and can be modified by user.

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