968
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
B Instruction Execution Time
B-4 Applied Instruction Execution Time
Appendix B-4 Applied Instruction Execution Time
• FX
3U
/FX
3UC
PLCs
FNC
No.
Instruction
Execution time in ON status (
µ
s)
Execution time in OFF status (
µ
s)
Remarks
16-bit instruction
32-bit instruction
16-bit instruction
32-bit instruction
Program flow
00 CJ
8.0
⎯
0.195
⎯
01 CALL
13.5
(CALL+SRET)
⎯
0.195
⎯
02 SRET
⎯
⎯
⎯
03 IRET
4.4
⎯
⎯
⎯
04 EI
3.8
⎯
⎯
⎯
05 DI
3.7
⎯
⎯
⎯
06 FEND
113.9 + 2.13X +
3.25Y
⎯
⎯
Even if FEND and END are
used together, execution time
of only END is required.
X: Number of input points,
Y: Number of output points
07 WDT
5.4
⎯
0.065
⎯
08 FOR
11.6
(FOR + NEXT)
⎯
⎯
⎯
09 NEXT
⎯
⎯
⎯
Move and compare
10 CMP
15.5
16.0
0.455
0.845
11 ZCP
18.9
19.7
0.585
1.105
12 MOV
0.64
1.48
0.32
1.48
For details, refer to
Appendix B-6-2.
13 SMOV
22.9
⎯
0.715
⎯
14 CML
10.6
10.2
0.325
0.585
15 BMOV
13.9 + 0.44n
⎯
0.455
⎯
16 FMOV
14.2 + 0.19n
14.0 + 0.38n
0.455
0.845
17 XCH
10.7
11.4
0.325
0.585
18 BCD
7.94
12.49
0.325
0.585
19 BIN
4.38
5.32
0.325
0.585
Arithmetic and logical operation
20 ADD
4.77
5.72
0.455
0.845
21 SUB
4.82
5.78
0.455
0.845
22 MUL
4.6
5.7
0.455
0.845
23 DIV
6.3
7.67
0.455
0.845
24 INC
6.2
6.4
0.195
0.325
25 DEC
6.2
6.4
0.195
0.325
26 WAND
3.57
4.55
0.455
0.845
27 WOR
3.57
4.55
0.455
0.845
28 WXOR
3.57
4.55
0.455
0.845
29 NEG
7.6
8.0
0.195
0.325
Rotation and shift
30 ROR
10.5
11.5
0.325
0.585
31 ROL
10.5
11.5
0.325
0.585
32 RCR
10.9
11.8
0.325
0.585
33 RCL
10.9
11.8
0.325
0.585
34 SFTR
23.2 + 0.08n
⎯
0.585
⎯
35 SFTL
23.2 + 0.08n
⎯
0.585
⎯
36 WSFR
7.5 + 0.44n
⎯
0.585
⎯
37 WSFL
7.5 + 0.44n
⎯
0.585
⎯
38 SFWR
8.1
⎯
0.455
⎯