What is the purpose of PLC input/output modules?

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What is the purpose of PLC input/output modules?

The main idea is how a PLC connects with the real world. Input/output modules act as the bridge between the PLC and field devices. Input modules sense signals from field devices such as switches and sensors and convert or condition those signals so the PLC can read them. Output modules take the PLC’s decisions and convert them into signals that drive actuators like relays, contactors, motors, or valves. This separation allows the PLC to process data safely and reliably, handling both digital (on/off) and analog (voltage or current) signals as needed. Remember that the program lives in the PLC’s memory, while outputs are for commanding field devices and inputs are for reading field conditions.

The main idea is how a PLC connects with the real world. Input/output modules act as the bridge between the PLC and field devices. Input modules sense signals from field devices such as switches and sensors and convert or condition those signals so the PLC can read them. Output modules take the PLC’s decisions and convert them into signals that drive actuators like relays, contactors, motors, or valves. This separation allows the PLC to process data safely and reliably, handling both digital (on/off) and analog (voltage or current) signals as needed. Remember that the program lives in the PLC’s memory, while outputs are for commanding field devices and inputs are for reading field conditions.

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