The Opto 22 Developer site has a new section for CODESYS topics.

The CODESYS Development System and Runtime Engine is one of the main programming options on the groov EPIC system. It provides an IEC 61131-3 compliant Programmable Logic Controller (PLC).

CODESYS Overview

The new section coincides with the 3.0.0.0 release of https://www.opto22.com/support/resources-tools/downloads/opto-22-library-package-for-codesys-development-sy.

Read more about it in the OptoBlog article CODESYS Library Package gets new OptoMMP features.