APPARATUS FOR DRIVING A SWITCHING DEVICE IN A SAFETY-ORIENTED MANNER VIA AN AS-I SYSTEM

摘要

The invention relates to an apparatus (4) for an AS-i system comprising an AS-i bus (27) and an AS-i safety monitor (24) connected to the AS-i bus (27), wherein the apparatus (4) comprises an AS-i connection (6) which can be used to connect the apparatus (4) to the AS-i bus (27), a processing unit (5), and an output (8) which switches in a safety-oriented manner, wherein the apparatus (4) can receive a secure message via the AS-i connection (6) and can drive a switching device (31) via the output (8) which switches in a safety-oriented manner. In order to improve evaluation of the feedback circuit inside an AS-i system, the apparatus (4) also comprises an input (3) via which the processing unit (5) can evaluate a feedback circuit of a switching device (31) connected to the input (3).