
Instruction Set and Execution Times
Appendix C
140
Instruction Execution Times
The execution time is given in microseconds. “Word” indicates any data area address except for indirectly ad-
dressed DR (
*
DR).
Instruction
Number of words
ON execution time
Conditions
OFF execution time
I/O, work, or
dedicated
DR, LR, or
TC (see
note)
I/O, work, or
dedicated
LR, DR, or
TC
LD
2
3
0.4
0.8
Always
Same as ON time.
LD NOT
2
3
0.4
0.8
Always
Same as ON time.
AND
1
2
0.2
0.6
Always
Same as ON time.
AND NOT
1
2
0.2
0.6
Always
Same as ON time.
OR
1
2
0.2
0.6
Always
OR NOT
1
2
0.2
0.6
Always
Same as ON time.
AND LD
2
2
0.4
0.6
Always
Same as ON time.
OR LD
2
2
0.4
0.6
Always
Same as ON time.
OUT
2
3
2.4
7.0
Always
Same as ON time.
OUT NOT
2
3
2.4
7.0
Always
Same as ON time.
TIM
---
4
---
24.4
Constant for SV
R: 23.0
IL: 24.8
38.5
Word for SV (SP16, SP20 only)
R: 28.6
63.0
*
DR for SV (SP16, SP20 only)
IL: 27.1
CNT
---
4
---
24.4
Constant for SV
R: 22.4
IL: 19.8
38.8
Word for SV (SP16, SP20 only)
R: 28.9
63.0
*
DR for SV (SP16, SP20 only)
IL: 4.8
NOP(00)
1
1
0.2
Always
N.A.
END(01)
1
1
9.8
Always
N.A.
IL(02)
2
2
19.6
Always
19.8
ILC(03)
1
1
0.2
Always
0.2
STEP(04)
4
4
35.4
Always
23.0
SNXT(05)
4
4
38.2
Always
28.4
DIFU(10)
4
4
39.2
Always
Normal: 32.8
IL: 20.0
DIFD(11)
4
4
40.4
Always
Normal: 34.4
IL: 20.2
KEEP(12)
4
4
29.0
Always
28.4
TIMM(20)
4
4
29.5
Constant for SV
R: 23.6
IL: 22.2
25.8
Word for SV (SP16, SP20 only)
R: 28.8
63.0
*
DR for SV (SP16, SP20 only)
IL: 27.1
TIMH(21)
4
4
26.0
Constant for SV
R: 23.6
IL: 22.2
22.8
Word for SV (SP16, SP20 only)
R: 28.8
59.9
*
DR for SV (SP16, SP20 only)
IL: 27.1
ATIM(22)
3
3
24.8
Always
R: 25.5
IL: 23.9
RDM(23)
5
5
69.4
Always
R: 68.0
IL: 19.4