CODESYS® Fieldbus & Communication

Communication between devices at all levels

Industrial Ethernet
Classic fieldbuses
OPC UA, OPC DA, PubSub
IIoT Communication

CODESYS Fieldbus & Communication

The wide variety of communication options makes CODESYS a unique automation platform. Whether a connection to classic fieldbuses such as CAN/CANopen®, Industrial Ethernet fieldbuses such as EtherCAT® and PROFINET, general communication protocols such as OPC UA and MQTT or application-specific protocols such as DNP3 and BACnet® - CODESYS offers integrated solutions that you can use immediately.

CODESYS thus enables communication between devices at all levels: Of course, reading and writing inputs and outputs at field level, cross-communication between distributed controllers and other intelligent devices in production lines or mobile machines, but also data exchange between the controller and the control level or the cloud.

Your advantages:

Seamlessly integrated communication options

  • You only need a single tool for data exchange at different levels.
  • You have fewer sources of error in communication.

Optimized usage option for the application

  • Configure the fieldbus and field devices with one of the integrated configurators or communicate from the application using the function library.
  • Bus communication and user application are optimally synchronized when integrated into the runtime system.

Communication based on tested and established products

  • Tested and partly certified functionality that many thousands of others also use and that you can rely on!
  • Benefit from updates with new functions.

Sample projects for an easy start

Realize data exchange without having to start from "0".

Platform-independent protocol stacks as a CODESYS library

  • Used communication blocks are compiled, transferred and executed on your target system together with your logic application.
  • Unused communication blocks do not occupy any memory - leaving more memory for your application.

Gateway function without additional hardware or software

Use several communication protocols simultaneously and implement the data transition between the communication levels directly in the control application.

CODESYS Fieldbus

The use of I/O data from connected fieldbus systems is a core task of every control platform. CODESYS supports this task with two components:

  • Communication libraries that implement the protocol stack
  • Adapted configurators for the most important fieldbus and communication systems

The application of the various fieldbus technologies with protocol stack and configurator is almost identical. The graphical configurators allow you to comprehensively manage the fieldbuses and the nodes used. CODESYS also offers you in-depth diagnostic functions such as event loggers or diagnostic information in the device tree. You can even read out the diagnostic information via generic variables in the application and react to it.

Classic fieldbus systems/protocols supported in CODESYS:

  • CANopen
  • J1939
  • PROFIBUS*
  • Modbus TCP/RTU
  • IO-Link
  • KNX®

*is in the service phase

 

Ethernet-based fieldbus systems/protocols supported in CODESYS:

  • EtherCAT
  • Ethernet/IP™
  • PROFINET

 

In addition, the CODESYS Development System includes a generic configurator for other bus systems.

 

CODESYS Communication

In addition to the fieldbuses, communication protocols are available for exchanging data with other systems in the automation environment - for example with other controllers, any other intelligent devices in the network, connected MES or ERP systems or private or public clouds.

You can also access physical interfaces such as Ethernet and serial interfaces from the PLC application and exchange data via important communication protocols such as OPC UA, MQTT or http/https. You can also develop your own protocols directly in CODESYS.

Communication protocols supported in CODESYS :

  • OPC UA
    • Server/Client
    • PubSub
  • Building Automation Library
  • BACnet
  • DNP3
  • IIoT library (MQTT, http/https, SMTP/POP3, SNTP, SNMP)
  • Basic services for implementing proprietary protocols
  • Proprietary CODESYS protocols