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982
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
B Instruction Execution Time
B-6 Execution Time on Combination of Applicable Devices and Indexing
Appendix B-6 Execution Time on Combination of Applicable Devices and
Indexing
In examples shown below for basic instructions, MOV instruction and data comparison instructions, the instruction
execution time varies depending on the combination of target devices and absence/presence of indexing.
The combinations of target devices marked with "*1" and "*2" are handled as exceptions because high speed
processing is adopted in the technique.
Appendix B-6-1 Basic instruction (LD/LDI/AND/ANI/OR/ORI) execution time
• FX
3U
/FX
3UC
PLCs
• FX
3G
PLCs do not support indexing of bit devices and contact instructions with bit specification of word
devices in basic instructions.
Appendix B-6-2 Applied instruction execution time
1. MOV (FNC 12) instruction execution time
• FX
3U
/FX
3UC
PLCs
- MOV instruction (16-bit operation)
*1.
These combinations are handled as exceptions because high speed processing is adopted in the
technique.
*2.
When the instruction is executed for a BFM in a special extension block/unit for FX
3U
/FX
3UC
Series.
Specified device type
Condition
Instruction execution time
Bit device
Without indexing
0.065
With indexing
11.9
Word device
Bit specification
8.8
Command
contact
S (source)
D (destination)
Without indexing (
µ
s)
With indexing (
µ
s)
KnY,KnM,KnS
T,C,D
R
U
\G
*2
KnY,KnM,KnS
T,C,D
R
U
\G
*2
ON
KnX,KnY,KnM,KnS
15.5
12.1
13.8
212.9
18.6
16.6
16.9
214.7
T,C,D
12.1
0.64
*1
10.4
209.7
16.6
14.5
14.8
212.8
R
13.8
10.4
12.1
211.3
16.9
14.8
15.1
213.1
U
\G
*2
131.8
128.5
130.2
377.9
133.1
129.9
131.5
379.4
K,H
12.5
0.64
*1
10.8
210.1
15.4
13.3
13.6
211.6
OFF
KnX,KnY,KnM,KnS
0.325
T,C,D
0.32
*1
R
U
\G
*2
K,H
0.32
*1