Building automation system, has manual switch position transmitted to field bus module, and sets setting of relay as higher priority than switching and actuating signals

摘要

The building automation system includes one or more coupling relay for switching operational units, and an additional bus system (3) for transmitting the switch position of a manual switch (30) to a field bus module (20). The switch position of the manual switch makes the setting of the relay with higher priority than the switching and actuating signals of the automation system (14).