If you’re PLC supports Codesys 3.5 the this might be worth a look;

Home Automation system build in CoDeSys 3 with MQTT communication to any third party Home Automation software - MichielVanwelsenaere/HomeAutomation.CoDeSys3

project build around a MQTT lib with Qos 2 support for pub and sub with ready to use FB for lights, covers, dimmers etc…

nice thing about it is that core operations like switching lights, controlling covers are controlled from the PLC which is very reliable and robust. MQTT communication allows control from other systems like for example Home Assistant.

YAML examples for integrating with HA are included!