The SWOP Writing Operation Protocol is an open-source protocol defined by the aedifion GmbH for writing setpoints (and schedules) to building automation equipment and receiving feedback.
Specifications and implementations are hosted on Gitlab.com. The latest version of the specifications is continuously built and published and can be downloaded:
Introduction - SWOP Protocol
SWOP Protocol Documentation
The specification source as well as reference implementations are published under open source license (MIT) in the following repository.
aedifion / SWOP
Specifications and implementation of the SWOP protocol for writing setpoints and schedules to building automation networks.