Installation manual
CNC 8055
CNC 8055i
PLC RESOURCES
9.
SOFT: V02.2X
·445·
Timers
9.5.3 Delayed deactivation mode. Input TG3
With this operating mode, it is possible to apply a time delay between the deactivation of the trigger
input TG3 and the deactivation of the status output T of the timer.
The time delay is set by the time constant.
If the timer is initialized with values TEN=1 and TRS=0, the timer will be activated when a leading
edge is produced at the TG3 input. At that moment, the timer status output will have a value of T=1.
The timer waits for a down-flank at input TG3 to start the "t" timing from "0".
Once the time specified by the time constant has elapsed the timing operation will be considered
as having completed and the timer status output will be deactivated (T=0).
The elapsed time will remain as a timer time value (T) once timing has been completed.
If, once the timing has finished, it is required to activate the timer again, another leading edge must
be produced at the TG3 input.
If another leading edge of the trigger input TG3 is produced before the time specified by the time
constant has elapsed, the PLC will consider that the timer has been activated again, maintaining
its status (T=1) and initializing timing at 0.
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