Fig. 99: Typical Timing Diagram for SF_Antivalent
The function block monitors the discrepancy time between Channel NO and Channel NC.
Error Behavior
The output S_AntivalentOut is set to FALSE. Error is set to TRUE. DiagCode indicates the Error states.
There is no Reset defined as an input coupled with the reset of an error. If an error occurs in the inputs, one
new set of inputs with the correct value must be able to reset the error flag. (Example: if a switch is faulty and
replaced, using the switch again results in a correct output.)
Configuration and programming
AC500-S Libraries > SafetyBlocks_PLCopen_AC500_v22.lib
30.03.2017 AC500-S 277
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