Communication protocol for telecontrol technology, fully usable in the IEC 61131-3 programming system

Integrated DNP3 support in CODESYS

The DNP3 (Distributed Network Protocol) communication standard is used in telecontrol technology to exchange data between control systems and remote maintenance terminals. CODESYS DNP3 SL enables this communication in CODESYS applications for compatible control systems with a serial or Ethernet interface. A CODESYS-compatible PLC can therefore be configured and used as a remote maintenance terminal.

Product features

  • CODESYS library with IEC 61131-3 function blocks for communication via DNP3 protocol
  • Example project for the fast execution of data transfers on CODESYS controllers
  • Configuration and communication by calling function blocks
  • Support of numerous data types defined in the protocol (AnalogInput, AnalogInputDeadband, AnalogOutput, BinaryCounter BinaryInput BinaryOutput DoubleBitInput)
  • Options for data exchange:
    • Reading and writing the supported data types
    • Unsolicited response with specification of the sampling rate
  • Supported communication media:
    • Serial connection
    • TCP/IP

Reference information

Consulting, offers, and further information from


CODESYS brochures and information material

CODESYS - One software. All applications. Your Automation Solution.
Version: 10/2023
pdf 2 MB
CODESYS - One software. Any field of application. Your automation platform.
Version: 10/2023
pdf 2 MB
Verschiedene Anbieter präsentieren CODESYS-kompatible Geräte und spannende Lösungen, die für Ihre Automatisierungsaufgaben nützlich sein können.
Version: 10/2023
pdf 6 MB