140 Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
Chapter 3 Timer and Counter Instructions (TON, TOF, RTO, TONR, TOFR, RTOR, CTU, CTD, CTUD, RES)
Example: Each scan that limit_switch1 is set, the RTOR instruction increments the ACC
value by elapsed time until the ACC value reaches the PRE value. When
ACC ≥ PRE, the DN parameter is set, and timer_state3 is set.
Structured Text
RTOR_01.Preset := 500
RTOR_01.Reset := reset;
RTOR_O1.TimerEnable := limit_switch1;
RTOR(RTOR_01);
timer_state3 := RTOR_01.DN;
Function Block
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