Configuring the AS-Interface safety monitor
4.1 Function of the AS-Interface safety monitor
ASIMON V3 - Configuration software for AS-Interface safety monitor
38 Programming and Operating Manual, Edition 09/2008, GWA 4NEB 333 1558 02 DS 02
In the third step, the output device is then analysed. If the circuit has been internally validated
(result of the OR function from the second step of the evaluation is equal to ON), the output
device switches the message and safe switching outputs of the OSSD in accordance with its
function characteristics and time behaviour, i.e. the relays trip and the switching contacts close
or the safe AS-Interface output is set.
Figure 4-1 Order of events during th e evaluation of the configured devices
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>
=
1
ORORANDANDGLOBAL
Monitoring devices
Logic devices
External device monitoring
devices
Start devices
Output device
Safety
switching output
and/or
safe actuator
OR function
Global
AND function
Safe input
Safe input
Safe input
Safe input
External device
monitoring circuit
Safe input