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FX
3G
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3U
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3UC
 Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
8 Program Flow – FNC 00 to FNC 09
8.1 FNC 00 – CJ / Conditional Jump
1
In
trodu
ct
ion
2
O
ver
vi
ew
3
In
st
ru
ct
ion 
Li
st
4
D
evices 
in D
etail
5
Specifi
ed t
he
D
evice &
 
C
onst
ant
6
Bef
ore 
Pr
ogr
am
m
ing
7
B
asic 
In
st
ru
ct
ion
8
FNC0
0-F
NC0
9
Pr
ogr
am
 Flow
9
FN
C
10-FN
C
19
Mo
ve
 &
 Co
mp
are
10
FNC2
0-F
NC2
9
Ar
ith.
 &
 Logic 
O
per
ati
on
8.1.2
Relationship between master control instruction and jump instruction
The figure below shows the contents of operation and the relationship between the master control instruction.
Avoid using [2], [4] and [5] because the operation will be complicated.
MC N 0 M 1
CJ  P  1
MC N 0 M 0
P  1
CJ  P  0
CJ  P  2
P  2
CJ  P  3
MCR N 0
P  3
[1] Jump from outside MC
to outside MC
Jump is available
arbitrarily.
[2] Jump from outside MC
to inside MC
Jump is executed
regardless of the MC
operation.
Even if M0 is OFF, M0
is regarded as ON after
P1.
[3] Jump from inside MC to
inside MC
Jump is disabled while
M0 is OFF.
[4] Jump from inside MC to
outside MC
Jump is disabled while
M0 is OFF.
Jump is executed while
M0 is ON, but MCR is
invalid.
CJ  P  4
MCR N 0
MC N 0 M 2
P  4
MCR N 0
M
a
ster control
M
a
ster control
[5] Jump from
inside MC
to inside
another
MC
Jump is enabled while M1 is ON.
In circuits after jump, M2 is regarded as ON
regardless of the actual ON/OFF status of M2.
And the first MCR N0 is ignored.
M
a
ster control
P  0