#15 PLC Best Practices – Safe State when PLC Restarts
Define safe states for the process in case of PLC restarts (e.g., energize contacts, de-energize, keep the previous state).
Define safe states for the process in case of PLC restarts (e.g., energize contacts, de-energize, keep the previous state).
Leave as much operational logic e.g., totalizing or integrating, as possible directly in the PLC. The HMI does not get enough capacity.
Track PLC operating modes – Keep the PLC in RUN mode. If PLCs are not in RUN mode, there should be an alarm to the operators.
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In this post, we will see the concept of cyber-security in PLC (programmable logic controllers) in industrial automation systems.
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