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Introduction to M12 connector pin coding

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The M12 connector is a circular connector with a 12mm locking thread and generally has an IP rating against ingress of liquids and solids. M12 connectors are ideal for sensors, actuators, and industrial Ethernet and fieldbus devices used in measurement and control, communications, transportation, robotics, agriculture, and alternative energy. Suitable for industrial automation fields and corrosive environments.

 

M12 Field Installable L-coded connector

 

 

 

M12 connectors are initially released in 3-pin and 4-pin versions, which offer IP67 protection. The 4-pin M12 connector allows the inclusion of more advanced sensors and actuators in a single system. Today, these rugged connectors are available in 3-, 4-, 5-, 8- and 12-pin configurations. In addition to the different number of pins, M12 connectors also have a variety of key codes to prevent incorrect mating.

 

 

M12 encoding types are A encoding, B encoding, D encoding and X encoding. A-code, B-code and X-code are some of the earliest developed and longest-available M12 connectors. The latest M12 coding types currently under development are K coding for AC and L coding for PROFINET DC.

M12 A-Code Field Termination ConnectorField Wireable M12 K Coded Connector

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