142 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)
The accumulated value continues incrementing, even after the .DN bit is set. To
clear the accumulated value, use a RES instruction that references the counter
structure or write 0 to the accumulated value.
Arithmetic Status Flags: Not affected
Fault Conditions: None
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