Chapter 4: RLL Programming
Timer Mode 3 (OFF-Delay)
Mode 3 Timer is an OFF-Delay with reset that will time up to a fixed preset value and stop timing when
the current time is equal to the preset value. Additionally, the current time value is non-retentive and will
reset to zero on a loss of power to the PLR. In the example below, the timer reset input is Input I1. Also
in the example below, timer status bit T1 will be ON immediately when its rung is true. The timer will
only begin timing up when its rung changes to false. Timer status bit T1 will turn OFF when the current
time value reaches 10 seconds.
44
SG2 PLR User Manual
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