Specification of the permissible discrepancy time for monitoring the switching operation at the S_ChannelA and S_ChannelB inputs.
Data type: TIME
Initial value: #0ms
Connection: Connect this input to a time literal, i.e., to a constant of the data type TIME.
Background: As a result of mechanical influences, signals may have a tolerance when switching contacts. By specifying the DiscrepancyTime value, the time period is defined within which the switching operations at the inputs S_ChannelA and S_ChannelB must occur to be recognized as simultaneous. This means both inputs can switch to SAFETRUE or SAFEFALSE within the set discrepancy time.
NOTE:
The switchover from SAFEFALSE to SAFETRUE is monitored for both inputs, as well as the switchover from SAFETRUE to SAFEFALSE.
WARNING
NON-CONFORMANCE TO SAFETY FUNCTION REQUIREMENTS
Verify that the time value set at DiscrepancyTime corresponds to your risk analysis.
Be sure that your risk analysis includes an evaluation for incorrectly setting the time value at the DiscrepancyTime parameter.
Validate the overall safety-related function with regard to the set DiscrepancyTime value and thoroughly test the application.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
