Omron DEVICENET SAFETY - CONFIGURATION MANUAL 05-2005 System Configuration Manual page 132

Note: – In the DST1-MD16SL-1 or DST1-MRD08SL-1, the time is measured from when a safety output
turns ON until the safety input turns ON for the safety input and safety output with the same number
(e.g., Safety Input 0 and Safety Output 0).
– In the DST1-ID12SL-1, the time is measured between two safety inputs turning ON (e.g., Safety
Input 0 and Safety Input 6).
– The operation time is stored when the time from an output turning ON to an input turning ON is mea-
sured. The measurement, however, continues internally until the next time the output turns ON. If
the input turns ON again before the output turns ON, the measurement time will be updated. If an
input occurs in the middle of the operating range of reciprocating motion, like a cylinder, the mea-
surement value of operation (outward path) may be updated when returning (return path).
– When an output turns ON two consecutive times before the input turns ON, the time will be mea-
sured from the second time the output turned ON until the time the input turned ON.
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ON
Output
OFF
ON
Input
OFF
Operation Time
Monitor
ON
Output
OFF
ON
Input
OFF
This period is measured.
Section 7: Monitoring Devices