Appendix B: Instruction Execution Time; Appendix B-1 Basic Instruction Execution Time - Mitsubishi Electric MELSEC FX3U Programming Manual

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition

Appendix B: Instruction Execution Time

The instruction execution time in FX
Measurement condition
• High speed counters and interrupt instructions (I) are not used together.
• In operands, data registers are used as target devices.
• Indexing (V or Z) is not provided.

Appendix B-1 Basic Instruction Execution Time

• FX /FX PLCs
3U 3UC
Execution time in ON status (µs)
Instruction
16-bit instruction
Contact instructions
LD
LDI
LDP
LDF
AND
ANI
ANP
ANF
OR
ORI
ORP
ORF
Connection instructions
ANB
ORB
MPS
MRD
MPP
INV
MEP
MEF
Output instructions
OUT Y,M
OUT S
OUT T K
, FX
3G 3U
Execution time in OFF status (µs)
32-bit instruction 16-bit instruction
0.065
0.065
7.8
7.8
0.065
0.065
7.5
7.5
0.065
0.065
7.4
7.4
0.065
0.065
0.065
0.065
0.065
0.065
3.4
3.4
0.065
4.8
0.71
and FX PLCs is as shown below:
3UC
32-bit instruction
⎯
⎯
⎯
⎯
⎯
⎯
4.8
0.71
B Instruction Execution Time
B-1 Basic Instruction Execution Time
Remarks
*1
0.129 µs in 2-step instruction
*3
0.193 µs in 3-step instruction
*1
0.129 µs in 2-step instruction
*3
0.193 µs in 3-step instruction
*1
0.129 µs in 2-step instruction
*3
0.193 µs in 3-step instruction
*1
0.129 µs in 2-step instruction
*3
0.193 µs in 3-step instruction
*1
0.129 µs in 2-step instruction
*3
0.193 µs in 3-step instruction
*1
0.129 µs in 2-step instruction
*3
0.193 µs in 3-step instruction
*2
0.129 µs in 2-step instruction
*3
0.193 µs in 3-step instruction
T192 to T199, T246 to T511
11.6 µs in execution in ON status
8.2 µs in execution in OFF status
961
31
32
33
34
35
36
37
38
A
B