摘要 |
The invention relates to a method of controlling a door drive having a plurality of components which are communicatively connected to one another via a digital bus system, wherein at least one component is a safety component which reports the occurrence of a safety-relevant event over the data bus, and wherein the bus protocol reserves a cyclic safety phase for reporting a safety-relevant event and at least one component recognizes an undefined data transmission during the safety phase as a report of a safety-relevant event.
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