SmartPLC SafeLine AC4S with fieldbus interfaces
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SF_IN_ASi_dependent
43131
Device type:
AS-i slave (input)
Library:
sf_logicalinterfaces.library
Symbol in CODESYS:
>
Description
43254
Logical device for a safe sensor with 2 interdependently acting contacts/channels
SF_IN_ASi_dependent detects the switching states of the two signal channels/contacts of the AS-i
slave (ASi_SlaveAdr, ASi_Master). The logical device forms the logical AND connector from the two
values and provides the result as safe control signal. The following additional conditions apply for the
logical signal evaluation:
Simultaneity of the signal change of the two contacts/channels is monitored during switch-on: If
the signal states are not equal for a longer time than the set synchronisation time, both
contacts/channels have to take the value FALSE simultaneously before switch-on is possible
again. (SynchTime)
If the signal state of the two signal channels is invalid longer than the firmly set time, the logical
device changes to the locked error state. (InvalidTime = const. = 140ms)
The programmer can activate the following functions as option:
DisableLogging:
Only error events are transmitted to the online support centre (OSC) of the AC4S user interface.
StartupTest:
Both signal channels must take the state FALSE simultaneously before the logical device can start
with the signal evaluation.
To reset the logical device from the locked error state and to read diagnostic information of the
logical device:
→
CtrlASi_InSlave
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