Bosch rexroth ctrlX SAFETY SafeMotion Applications Manual page 158

ctrlX SAFETY "SafeMotion"
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Safety zone acknowledge (SZA)
It is not possible to parameterize the field bus control word via the ctrlX SAFE-
TYlink. Only one zone master is permitted per ctrlX SAFETYlink.
When it has been configured, the safety function "SZA" is active in the following
SMO operating states:
● Operating mode (OM)
● Parameter mode (PM)
In the states "configuration mode (CM)" and with deactivated safety tech-
nology, the "SZA" safety function is not active; the "safety" status of each node
and the sum signal "safety of the safety zone" go to state "Safety Default", i.e.,
no safety is acknowledged.
Zone nodes in configuration mode do not acknowledge safety, they do not
transmit the zone telegrams of the previous zone node.
Fig. 64: Example of zone setup with zone acknowledgement via output pair "SZA"
*1) A maximum of 16 zone nodes can be integrated
Requirement for zone acknowledgement
To be able to acknowledge the state of the safety zone, the zone master
receives the zone node status (safe or not safe) via the ctrlX SAFETYlink. The
zone master generates the zone status (safe or not safe) from the status of the
zone nodes of the safety zone. The zone master acknowledges the safety of the
Bosch Rexroth AG R911404905, Edition 02