Rockwell Automation 1772-L8_LW_LWP_LX_LXP,D17726.5.8 User Manual - Manual (Page 149)

Timers and Counters
Chapter 11
11-4
3. Enter <time base>.
For This
Time Base:
Press:
1.0 [1] [0]
0.1 [0] [1]
0.01 [0] [0]
4. Enter <preset value>.
Editing in a Completed Rung
Edit the Timer On or Timer Off Delay instruction by performing the
following steps.
1. Position the cursor over the Timer On or Timer Off Delay instruction
you want to change.
2. Press -(TON)-, -(TOF)-, or any other appropriate instruction type.
3. Enter <address>.
4. Enter <time base>.
5. Enter <preset value>.
The Retentive Timer On accumulates the amount of time that the
preconditions of its rung are true. It controls one or more outputs (by
means of other rungs) after the total accumulated time is equal to the preset
time. Whenever the rung is false, the accumulated time is retained. If the
outputs have been energized, they remain on. The accumulated time and
energized outputs are retained if power is removed from the processor. A
separate rung, containing a retentive timer reset instruction must be
programmed in order to reset the accumulated time to zero and turn off
the outputs.
010
00
RTO
030
1.0
PR 150
AC 000
Retentive Timer On