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M12 circular connector code meaning

Because of its compact design and excellent performance, M12 circular connectors are widely used in industrial automation, sensor networks, industrial Ethernet and other fields. In order to meet different application requirements, the M12 connector is given A variety of encoding forms (such as A, B, C, D, X, etc.). These codes are not only the model identification, but also directly determine the function and use of the connector. This article will analyze the meaning of M12 connector coding in detail, so that you can better understand and choose.

一、The core meaning of M12 coding:

The encoding of the M12 connector is usually achieved through different physical key designs to prevent incorrect connections and clarify application scenarios. The following are the specific uses of common codes:

1.A coding (Universal)

  • Main use: transmission of DC power supply or analog signal.
  • Application scenario: Widely used in the connection of sensors and actuators, such as factory automation equipment.
  • Number of cores supported: 3, 4, 5, 8 or 12.
  • Features: The most common encoding, suitable for universal device connection.

2.B Code (Field bus)

  • Main applications: PROFIBUS and other field bus system signal transmission.
  • Application scenarios: Industrial automation and process control networks.
  • Number of cores supported: 4 or 5.
  • Features: Dedicated to fieldbus communication to ensure signal stability.

3.C code (Power type)

  • Main use: AC or DC power transmission.
  • Application scenario: Applicable to the connection of devices requiring high power transmission.
  • Number of cores supported: 3 or 6 cores.
  • Features: Support higher current, designed for power supply.

4.D coding (Industrial Ethernet type)

  • Main purpose: 10/100Mbps Ethernet data transmission.
  • Application scenario: Industrial Ethernet and fast communication equipment.
  • Supported cores: 4 cores.
  • Features: Optimized for Ethernet communication, supporting efficient and stable data transmission.

5.X Coding (High-speed Ethernet type)

  • Main use: Ethernet communication up to 10Gbps.
  • Application scenarios: Industrial networks and automation systems requiring high-speed data transmission.
  • Supported cores: 8 cores.
  • Features: Excellent shield design, support high-speed signal transmission, strong anti-electromagnetic interference ability.

6.K, L, T codes (power and hybrid)

These codes are mainly used for special needs scenarios:

  • K code: Suitable for three-phase power transmission, supporting high power supply of equipment.
  • L Code: Designed for low voltage DC power supply, according to Profinet power supply specifications.
  • T-code: Used for DC power transmission, especially for hybrid connection needs with data and power.

二、The significance of coding

  • Functional distinction: Connectors with different codes avoid incorrect connections and protect equipment security.
  • Interoperability: Coding determines the application scenarios of connectors, making device connections more efficient.
  • Reliability: Clear coding can prevent electrical failures caused by misinsertion and removal, and extend equipment life.

三、Select the key points for appropriate encoding

  • Application requirements: Determine whether the device needs to transmit power, signals, or data.
  • Interface matching: Ensure that the code of the connector is the same as that of the device interface.
  • Environmental requirements: Select the appropriate model according to the protection level (such as IP67, IP68) to adapt to the complex environment.

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