IMO Precision Controls K7 Series User Manual page 30

Chapter 5 CPU Module
5) Retriggerable timer
The operation of retriggerable timer is same as that of monostable timer. Only difference is that the retriggerable timer is
not ignore the input condition of TRTG instruction while the timer is operating (decreasing). The current value of
retriggerable timer will be set as preset value whenever the input condition of TRTG instruction is turned on.
Timer input condition
Timer output relay
Preset value (PV)
Current value
REMARK
The accuracy of timer:
The Maximum timing error of timers of K series is + 2 scan time ~ - 1 scan time.
Refer the programming manual for details.
(On operation)
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PT