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126 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)
Arithmetic Status Flags: Not affected
Fault Conditions:
A major fault will occur if Fault type Fault code
.PRE < 0 4 34
.ACC < 0 4 34