Rockwell Automation 1785-Lxxx Enhanced and Ethernet PLC-5 Programmable Controllers - Manual (Page 303)

Publication 1785-UM012D-EN-P - July 2005
Instruction Set Quick Reference D-3
Timer Instructions
Instruction Description
Timer On Delay
TON
Status Bits:
EN - Enable
TT - Timer Timing
DN - Done
If the input conditions go true, timer T4:1 starts incrementing in
1-second intervals. When the accumulated value is greater than
or equal to the preset value (15), the timer stops and sets the
timer
done bit.
See page F-8 for a description of prescan operation for
this instruction.
Timer Off Delay
TOF
Status Bits:
EN - Enable
TT - Timer Timing
DN - Done
TON
TIMER ON DELAY
Timer
Preset
T4:1
15
1.0
0
Time Base
Accum
Rung
Condition
EN
15
TT
14
DN
13
ACC
Value
TON
Status
False
True
True
0
1
1
0
1
0
0
0
1
0
increase
>= preset
Reset
Timing
Done
TOF
TIMER OFF DELAY
Timer
Preset
T4:1
180
.01
0
Time Base
Accum
If the input conditions are false, timer T4:1 starts
incrementing in 10 1-ms intervals as long as the rung remains
false. When the accumulated value is greater than or equal to
the preset value (180), the timer stops and resets the timer
Rung
Condition
EN
15
TT
14
DN
13
ACC
Value
TOF
Status
True
False
False
1
0
0
0
1
0
1
1
0
0
increase
>= preset
Reset
Timing
Done
See page F-8 for a description of prescan operation for
this instruction.