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              The  definition of  PROFINET wiring to M12 connector
PROFINET is a new generation automation standard based on industrial Ethernet technology, which provides a complete network solution for automation field, including real-time Ethernet, motion control, distributed automation, failsafe and network security, etc.PROFINET can be applied in various occasions and complete various tasks with different requirements.From the perspective of transport protocol, PROFINET divides data into NRT, RT and IRT.From the perspective of application, it can be divided into: CBA and I/O.

Technical characteristics of PROFINET communication standard:
1. Real-time communication and IP communication based on TCP are simultaneously used on the same communication line. TCP/IP is for Profinet CBA and factory debugging trial.
2.RT real-time communication protocol is aimed at the application of PROFINET CBA and PROFINET I/O, which is suitable for all applications, communication between components in distributed systems and communication between controllers and distributed field communication devices.
3.IRT isochronous real-time communication protocol is for Profinet I/O communication of the driving system, which can meet the requirements from general communication to high performance and scalable real-time communication with time synchronization.

Profinet Ethernet connection with M12 connector communication definition:
 M12 connector         wire color       signal
  1th pin                      yellow            TD+
  2th pin                      white              RD+ 
  3th pin                      orange           TD -
  4th pin                      blue                RD -

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Communication features of PROFINET connected with M12 connector:
1. Standard interface, compatible with all M12 connector manufacturers' products.
2. Each equipment manufacturer uses any software that supports TCI functions to parameterize and diagnose field equipment without the need to exit the program.
3. To meet all automation requirements, open standards and modularization are adopted.
Modular design can easily expand the open engineering system and realize the free choice of suppliers.
5. High system availability.