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NOTE
• The pointer numbers available for both CJ and SCJ instructions are P0 to P4095.
• Use the FEND instruction as shown below when a program using the CJ and SCJ
instructions must be concluded in each program block. (Refer to section 4.7.1 for
FEND.)
Start
Sequence
program A
Is input
condition on?
YES
NO
Sequence
program B
Sequence
program C
0
P
Sequence program A
Input condition
CJ
P
Sequence program B
Sequence program C
FEND
END
When CJ is
executed
Step 0
CJP
P
END
When CJ is not
executed
Step 0
FEND
• The status of ladders skipped by the CJ instruction remains unchanged.
1100
1103
P10
1330
X0
X2
X1
CJ P10
Y72
PLS M1
1100
1103
P10
1330
X0
X2
X1
CJ P10
Y72
PLS M1
(Before CJ execution) (During CJ execution)
Because X0 is on, all instructions
within this area are not executed.
Hence Y72 remains on even
after X2 is turned off.
• After the timer coil has turned on, jumping the timer of a coil that is on using the
CJ, SCJ, or JMP instruction interrupts an accurate measurement.
Applicable device
Internal device
(system or
user)
File
register
MELSECNET/
10 (H) Direct
Jn\
Index
register
Constant
Pointer
Level
Bit Word R Bit Word
Intelligent
function
module
Un\G
Z K H P I N
Digit
Number of basic
steps
CJ
SCJ
P**
P**
P 2