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Entry  31 Jan 2023, Lukas Gerritzen, Suggestion, "Soft interlock" possible? 
    Reply  31 Jan 2023, Stefan Ritt, Suggestion, "Soft interlock" possible? 
Message ID: 2453     Entry time: 31 Jan 2023     Reply to this: 2454
Author: Lukas Gerritzen 
Topic: Suggestion 
Subject: "Soft interlock" possible? 
Is it possible to impose requirements on certain output variables in an interlock-like fashion? For example: "As long as the temperature exceeds a certain threshold, a light switched by a relay cannot be turned on."

A workaround would be to set an alarm on that variable and call a script which turns the light back off, but that might not be ideal in certain scenarios. For safety-critical situations, a PLC would be preferred, but I am missing an option between those two.
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