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OPC UA is considered the number one communication standard in the Industry 4.0 era. Still many programmers ask themselves, how much additional effort is actually involved when working with OPC UA. The following article gives an answer by looking at the usage of OPC UA Server, Client and PubSub on CODESYS-compatible platforms.

In the automation industry, CODESYS is well known and established as the standard IEC 61131-3 platform. Hundreds of different industrial controllers are engineered with the tool or its derivatives. The software's comprehensive communication features play an important role here. They allow for PLC applications to be loaded onto a device, debugged in online mode, and also for I/O data to be read and written via fieldbus or proprietary protocols. Secure data exchange with other devices or units via OPC UA is also an essential feature of the platform.

Read full article in the Computer&AUTOMATION 01/2022 (pp. 36-38) »

This article is only available in German language.

Author: Roland Wagner

Jobs @ CODESYS