Rockwell Automation 1772-LS_LSP,D17726.8.6 PROG/OPER MANUAL-MINI PLC-2/05 - Manual (Page 264)

Quick Reference
Appendix C
CĆ8
Table C.G
Timer Instructions
NOTE: The timer word address, XXX, is assigned to the timer accumulated areas of the data table. To determine which addresses are
valid accumulated areas, the most significant digit in the word address must be an even number.
The time base, TB, is userĆselectable and can be 1.0, 0.1, or 0.01 second. Preset values, YYY, and accumulated values, ZZZ, can vary
from 000 to 999.
Bit 15 is the timed bit. Bit 17 is the enable bit.
The word address displayed will be 3 or 4 digits long depending on the data table size. When entering the word address, use a leading
zero if necessary.
Key Symbol Instruction Name 1770-T3 Display Rung Conditions Status Bits
-(TON)- Timer On Delay XXX
-(TON)-
TB
PR YYY
AC ZZZ
When the rung is true, the timer
begins to increment the
accumulated value at a rate
specified by the time base.
When the rung is false, the timer
reset the accumulated value
to 000.
When the rung is true:
bit 15-set when AC=PR
bit 17-set
When the rung is false:
bits 15 and 17-reset
-(TOF)- Timer Off Delay XXX
-(TOF)-
TB
PR YYY
AC ZZZ
When the rung is true, the timer
resets the accumulated value
at 000.
When the rung is false, the timer
begins to increment the
accumulated value.
When the rung is true:
bit 15-set bit 17-set.
When the rung is false:
bit 15-resets when AC=PR
bit 17-reset
-(RTO)- Retentive Timer -(RTO)-
TB
PR YYY
AC ZZZ
When the rung is true, the timer
begins to increment the
accumulated value. When false,
the accumulated value is retained.
When the rung is true:
bit 15-set when AC=PR
bit 17-set
When the rung is false:
bit 15-no action is taken
bit 17-reset
-(RTR)- Retentive Timer Reset XXX
-(RTR)-
PR YYY
AC ZZZ
XXX - Word address of the
retentive timer it is resetting.
The preset and accumulated
values are automatically entered by
the industrial terminal.
When the rung is true, the
accumulated value and status bits
are reset.
When the rung is true:
bit 15 and 17-reset
When the rung is false: no action is
taken