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  1. Hi, I was wondering if it's possible to detect a changed/updated value in a data block even if the value remains the same as before. The reason I ask is because we have a SCADA system providing a setpoint for a temperature every x minutes. The value of the setpoint can remain unchanged for hours even days. However we still want the PLC to be able to detect wheather it's setpoint is updated every x minutes or not. Any good solutions? Thanks!