Why PLC Permissive Logic is Critical in Process Plants In today’s process industries, like oil and gas, chemicals, power generation, water treatment, and pharmaceuticals, PLC permissive logic is the safety net that keeps people, equipment, and production goals safe. A pump, compressor, or fan may look like it’s ready to go, but the PLC won’t … Continue reading PLC Permissive Logic Troubleshooting Procedure for Instrumentation Engineers