144
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
6 What to Understand before Programming
6.4 Mutual Relationship Among Program Flow Control Instructions
6.4
Mutual Relationship Among Program Flow Control Instructions
The table below shows the mutual relationship among various program flow control instructions.
In the table below, "
" indicates containment relationship, and "
" indicates that zones are partially
overlapped.
Top line
Left line
MC-MCR
MC-MCR
octet
Example
1
Example
2
CJ-P
EI-DI
FOR-NEXT
STL-RET
P-SRET
I-IRET
FEND-END
O-FEND
O-END
(no FEND)
CJ-P
EI-DI
FOR-NEXT
STL-RET
quintet
*2
inside
one
STL
*1
*1
Example 1: MC
−−
CJ
−−
P
−−
MCR
Instruction in
left line
Instruction in top line
Example 2: MC
−−
CJ
−−
MCR
−−
P
Instruction in
left line
Instruction in top line
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3