Safety switch arrangement has output stages controlled by code in safety monitor, which sends code to master in response to a master request call; slaves send reply dependent on code

摘要

The arrangement has output stages for generating signals for activating/deactivating working equipment, forming slaves in a master/slave bus system and controlled according to code stored in a safety monitor for signals passed over the bus system. In response to a master request call the monitor sends a code to the master that is detected by the slaves, which send a reply dependent on evaluating the code in response to a second master request call. The arrangement has output stages (3) for generating a number of switching signals for activating/deactivating connected working equipment (2). The output stages are slaves in a master/slave bus system with an associated safety monitor (9) for monitoring the signals passed over the bus system. The output stages are controlled in accordance with code stored in the safety monitor, which sends a code to the master (4) in response to a master request call that is detected by the slaves, which send a reply dependent on evaluating the code in response to a second master request call.