Inspection
Work Planning
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The physical or logical interface through which control systems receive signals from field devices and send commands to equipment.
Input/Output (I/O) represents the interfaces that allow control systems such as PLCs, DCSs and safety systems to communicate with field instruments and equipment. Inputs receive measurements, status signals and operator commands, while outputs transmit control signals to valves, motors, alarms and other actuators.
I/O forms the communication layer between field devices and industrial control systems, enabling monitoring, automation and process control.
I/O may be analog or digital and is organized into input and output modules that interface with field wiring and control system hardware.
Input/Output refers to the communication interface itself, whereas an I/O List is the engineering document that defines and records every I/O point within a control system.
Process Control; Automation; Instrumentation.
Distributed control systems.; PLCs.; Safety systems.; Industrial automation.; Instrumentation.
IEC 61131
VisualAIM connects glossary concepts to the asset records, inspection histories, and workflows they describe.
