I/O Modules

Input/Output (I/O) modules interface between control systems and field devices.

• Digital Input (DI): Reads on/off signals (e.g., switches, sensors).
• Digital Output (DO): Controls on/off devices (e.g., relays, solenoids).
• Analog Input (AI): Receives continuous signals (e.g., 4–20 mA, 0–10 V).
• Analog Output (AO): Sends variable signals to actuators or drives.
• Communication: Supports protocols like Modbus, Profibus, EtherNet/IP.
• Isolation: Provides galvanic isolation for noise immunity and safety.

Common in PLCs, DCS, and industrial automation systems.