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plc i/o modules

1 article tagged “plc i/o modules”.

Flat vector diagram of a PLC rack showing input module connected to field sensors and output module connected to actuators with signal path arrows through optocouplers
plc i/o modulesplc inputsplc outputs

How PLC Input and Output Modules Work

PLC input and output modules are more than just terminal strips. Learn exactly how signals get conditioned, isolated, and mapped into CPU memory on every scan.

Jul 30, 2026 · 9 min read

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