Instruction Set
Timer
3-6
timer instructions continued...
Instruction
Description
Retentive Timer On
RTO
Status Bits:
EN - Enable
TT - Timer Timing
DN - Done
If the input conditions go true, timer T4:10 starts incrementing in 1-second intervals as long as
the rung remains true. When the rung goes false, the timer stops. If the rung goes true again,
the timer continues. When the accumulated value is greater than or equal to the preset (10), the
timer stops and sets the timer done bit.
Timer Reset
RES
If the input conditions go true, timer T4:1 is reset. This instruction resets timers
and counters, as well as control blocks. This is necessary to reset the RTO
accumulated value.
RETENTIVE TIMER ON
Timer
T4:10
Time Base
1.0
Preset
10
Accum
0
RTO
Rung
Condition
EN
15
TT
14
DN
13
ACC
Value
RTO
Status
False
0
0
0
0
Reset
True
1
1
0
increase
Timing
False
0
0
0
maintains
Disabled
True
1
0
1
>=preset
Done
T4:1
(RES)