6
FUNCTIONS
6.12 Writing in Program during CPU Module RUN
6.12.3 Precautions for online change
6
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1
O
verv
iew
2
Per
fo
rma
nce
S
p
ecifica
tio
n
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S
equ
en
ce P
ro
g
ra
m
Co
nfig
ura
tio
n a
nd
E
xecut
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n Co
nd
iti
o
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I/O N
unb
er
Assig
n
m
e
nt
5
Me
mor
ie
s a
nd
File
s
Ha
nd
led
by CP
U Mo
du
le
6
Func
tions
7
Co
mmu
nic
a
tion
us
in
g
bu
ilt
-i
n E
th
e
rne
t po
rt
s o
f
CP
U mod
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le
8
Co
mm
un
icatio
n
w
ith
Int
e
lli
ge
nt
Fun
ction
Mo
du
le
(b) Leading edge instruction
The leading edge instruction is not executed when the instruction is in a writing
range even the execution condition(OFF
ON) is established at the completion
of online.
The corresponding instructions are PLS, P.
(c) SCJ instruction
When the SCJ instruction is in a writing range and the execution condition is ON
at the completion of the writing, a jump to the designated pointer occurs even in a
scan cycle.
Figure 6.56 Leading edge instruction operation
Figure 6.57 SCJ instruction operation
END
1 scan
END
END
0
0
0
OFF OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON ON
X0 status
X0
M0
X0
M0
X0
M0
[ PLS M0 ]
X0
A
A
OFF ON
Completion of online change
The leading edge instruction is not
executed even the execution
condition is OFF ON.
END
1 scan
END
END
0
0
0
OFF OFF
ON ON
X0 status
[ SCJ P0 ]
X0
A
A
OFF ON
X0
OFF
ON
SCJ command
X0
OFF
ON
SCJ command
X0
OFF
ON
SCJ command
Completion of online change
Jumps to the designated pointer.
Jumps to the designated pointer.
Jumps to the designated
pointer even in a scan
cycle.
