Table B.1 MicroLogix 1500 Controllers -
Memory Usage and Instruction Execution Time for Programming Instructions
Programming Instruction
LIFO Load
LIFO Unload
Limit
Master Control Reset
Masked Comparison for Equal
Move
Message, Steady State
Message, False-to-True
Transition for Reads
Message, False-to-True
Transition for Writes
Multiply
Masked Move
Negate
Not Equal
Not
One Shot
Or
One Shot Falling
One Shot Rising
Output Enable
Output Latch
Output Unlatch
Proportional Integral Derivative PID
Pulse Train Output
Pulse Width Modulation
Reset Accumulator
I/O Refresh
Reset
Return
Retentive Timer On
Subroutine
Scale
Scale with Parameters
Sequencer Compare
Sequencer Load
Sequencer Output
Square Root
Selectable Timed Interrupt Start STS
Instruction
Word
Mnemonic
Execution Time in µs Memory
False
True
LFL
9.7
22.2
LFU
9.7
25.6
LIM
5.3
5.5
MCR (Start) 0.8
0.8
MCR (End)
1.0
1.0
MEQ
1.7
1.7
MOV
0.0
2.3
MSG
6.0
17.0
198.0
226 + 1.4/
word
MUL
0.0
5.8
MVM
0.0
7.2
NEG
0.0
1.9
NEQ
1.1
1.2
NOT
0.0
2.4
ONS
1.7
2.2
OR
0.0
2.0
OSF
3.4
2.7
OSR
2.8
3.2
OTE
0.0
1.2
OTL
0.0
0.9
OTU
0.0
0.9
8.9
251.8
PTO
21.1
72.6
PWM
21.1
107.4
RAC
Word addressing level does not
apply.
REF
0.0
see p. B-6
RES
0.0
4.8
RET
0.0
1.0
RTO
2.2
15.8
SBR
1.0
1.0
SCL
0.0
8.7
SCP
0.0
27.0
SQC
6.3
20.1
SQL
6.3
19.1
SQO
6.3
20.0
SQR
0.0
22.3
0.0
50.7
MicroLogix 1500 Memory Usage and Instruction Execution Time
Long Word
Execution Time in µs
Usage in
False
Words
3.4
9.7
3.4
9.7
2.3
11.7
1.0
Long Word addressing level does not apply.
1.5
1.8
2.9
2.5
0.0
2.9
Long Word addressing level does not apply.
2.0
0.1
2.0
0.0
3.0
0.0
1.3
2.5
2.5
0.0
3.5
Long Word addressing level does not apply.
2.8
0.0
5.4
Long Word addressing level does not apply.
5.4
1.6
0.6
0.6
2.4
1.9
1.9
0.0
0.5
Long Word addressing level does not apply.
1.0
0.3
3.4
0.3
2.5
3.8
0.0
3.9
6.3
3.4
6.3
3.9
6.3
1.5
0.0
1.0
Long Word addressing level does not apply.
Memory
Usage in
True
Words
27.4
3.9
27.4
3.4
12.2
4.0
3.5
3.5
6.8
2.0
27.6
3.5
10.0
3.0
10.4
3.0
2.3
2.5
8.1
2.5
7.9
3.0
17.8
2.0
44.7
6.0
22.7
4.4
21.1
3.9
23.1
4.4
26.0
2.5
Publication 1762-RM001C-EN-P
B-3