Chapter 4 Relay Ladder Logic Programming 62
Timer Mode 5 (FLASH without Reset)
Mode 5 Timer is a Flash timer without reset that will time up to a fixed preset value then change the state of its
status bit 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 smart relay. In the example below, timer status bit T1 will be ON
immediately when its rung is true and begin its timing sequence. Timer status bit T1 will turn OFF when the
current time value reaches its preset of 10 seconds. This Flash sequence of the timer status bit T1 will continue as
long as its rung remains true.
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