Minimum Switch-Off Time; Response Time Of The State Flag; Default Values For Non-Secure Or Secure Data - Leuze electronic MSI 400 Operating Instructions Manual

12.1.1 Minimum switch-off time

The minimum switch-off time (e.g. of connected sensors) is the minimum time during which a switch-off
condition must be present in order to be detected so that error-free switching is possible. The minimum
switch-off time must be
• greater than the logic execution time and
• greater than the test gap + the maximum OFF/ON delay when the input is connected at test output X1–
X8 and the test gap is > 1 ms, and
• greater than the test period + the maximum OFF/ON delay when safety mats or safety edges are being
used.

12.1.2 Response time of the state flag

If an error is detected, the status data will be available in the Logic view of MSI.designer in the next logic
cycle. The time to detection of a status error depends, among other things, on the duration of the test
period and can be up to 1 s.

12.1.3 Default values for non-secure or secure data

Data from gateways or the non-secure MSI-EM-IO84NP I/O expansion module are categorically not se-
cure. Default values are taken up in the error state of the controller. The default value of IO data is 0 and
the default value of state data is 1.
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Technical data
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