The ABB NBIO-21CU 3BSE017427R1 is an analog input module for a programmable logic controller (PLC) system made by ABB.

ABB: This refers to ABB Ltd., a Swiss-Swedish multinational corporation that specializes in robotics, power and automation technologies

A PLC module, or programmable logic controller module, is a building block used to create a programmable logic controller (PLC). PLCs are industrial computers used to automate electromechanical processes, such as assembly lines, robotic devices, or any activity that requires high reliability control and ease of programming and process fault diagnosis.

• Input modules: These modules receive signals from sensors and other input devices.
• Output modules: These modules send signals to actuators and other output devices.
• Power supply modules: These modules provide power to the PLC and its modules.
• CPU modules: These modules are the brain of the PLC, and they are responsible for processing instructions and controlling the operation of the other modules.
• Communication modules: These modules allow the PLC to communicate with other devices, such as HMI (human-machine interface) panels and other PLCs.

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