Allen-Bradley PLC-2/30

Timer and Counter Instructions
Chapter 5
521
Table 5.D
Average
Execution Times for Instructions Described In Chapters 3
Through 8 When Instruction is TRUE
Instruction Name Symbol
Execution Time in
Microseconds
Examine On
1
Examine Off
1
Output Energize
1
Output Latch
1
Output Unlatch
1
-||-
-| / |-
-()-
-( L )-
-( U ) -
4
4
4.8
4.8
4.8
Timer OnDelay
1
Timer OffDelay
1
Retentive TimerOn Delay
1
Retentive Timer Reset
1
Up Counter
1
Down Counter
1
Scan Counter
1
Counter Reset
1
-(TON)-
-(TOF)-
-(RTO)-
-(RTR)-
-(CTU)-
-(CTD)-
-(SCT)-
-(CTR)-
18.6
18.6
18.6
4.8
19.6
19.6
17.6
4.8
Get
1
Put
1
-| G |-
-(PUT)-
5.8
6.6
Les
1
Equ
1
-| < |-
-| = |-
7.4
6.6
Get Byte
1
Limit Test
1
-| B |-
-| L |-
4.5
4.5
Add
1
Subtract
1
Multiply
1
Divide
1
BCDBIN
1
BINBCD
1
-(+)-
-(-)-
-(x)-
-(:)-(:)-
[CONVERT] [0]
[CONVERT] [1]
8.6
8.6
51.0
91.0
59.6
37.2
Branch Start
1
Branch End
1
3.2
3.2
Zone Control Last State
1 2
Master Control Reset
1
-(ZCL)-
-(MCR)-
7.6
3.6
Immediate Input
1
Immediate Output
1
-| I |-
-(IOT)-
62.2
77.4
Jump
Jump to Subroutine
Label
Return
-(JMP)-
-(JSR)-
- LBL -
-(RET)-
13.4
12.0
3.8
6.4
End
Temporary End
Subroutine Area
[END]
[T.END]
[SHIFT] [SBR]
<1
<1
<1
1
For this instruction, add 3.4 microseconds when its address is > 400
8
..
2
Instructions within zone increase by 1.2 microseconds per word when the zone controls outputs.
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