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CODESYS Fieldbus

CODESYS Fieldbus

CODESYS Fieldbus


Integrated Fieldbus Support in CODESYS

Beside the functionality of an IEC 61131-3 development system for programming industrial controllers, CODESYS also offers an extensive fieldbus support including everything from communication POUs to configurators and portable protocol stacks.

Specific Fieldbus Configurators

CODESYS provides seamlessly integrated configurators for a wide variety of fieldbus systems for configuring the process image of controllers:

  • EtherCAT
  • CANopen
  • J1939
  • EtherNet/IP
  • Sercos
  • Modbus
  • KNX
  • IOLink
  • BACnet

Portable Protocol Stacks

Portable CODESYS libraries realize the fieldbus protocol stack for CANopen, J1939, EtherCAT, EtherNet/IP, PROFINET und Sercos III. In addition, CODESYS also offers Modbus communication libraries (TCP and serial).


  • Identical protocol stack for different system platforms
  • Stack is dynamically compiled to the application
  • No external software tool required
  • No additional hardware required for realtime Ethernet systems: A standard Ethernet port on the device can be used for EtherCAT, EtherNet/IP oder PROFINET.

Integrated Commissioning and Diagnosis Functionality: The fieldbus system can be commissioned without an application. The diagnosis functionality can be accessed and used directly in the development system or coded into the application.


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