SmartPLC SafeLine AC4S with fieldbus interfaces
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SF_IN_ASi_conditionally_dependent
43132
Device type:
AS-i slave (input)
Library:
sf_logicalinterfaces.library
Symbol in CODESYS:
>
Description
43303
Logical device for a safe sensor with 2 conditionally interdependently acting contacts/channels
SF_IN_ASi_conditionally_dependent detects the switching states of the two signal channels 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:
The sequence of the signal changes of the two contacts/channels is monitored during switch-on
and switch-off. If the sequence of the signal change deviates from the set sequence, the logical
device changes to the locked error state. (Chan_B_first)
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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