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[2] Data link (Memory capacity save function)
V5
The memory capacity save function is to provide a part of the data link area in the slave station
data memory as a receiving area. A slave station can receive only the required area by relay link/
register link so that the slave stations can save on use of the memory area.
As this function can unify the receiving area address and the sending area address of each slave
station, the same program can be used for each slave station. Mixed allocation of the addresses
with the data link (standard function) is also possible.
①
②
F
u
n
t c
o i
n
9
R
e
a l
y
n i l
k
R
e
g
t s i
r e
n i l
①
②
③
④
⑤
⑥
(
Standard
function
Master station
Slave station
00
01
(8)
(8)
T
: N
M
c
o
m
m
u
n
c i
t a
o i
n
T
t s
T
k
: N
M
c
o
m
m
u
n
c i
t a
o i
n
T
t s
S
e
t t
n i
g
c
o
n
T
o
p
a
d
d
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s s
f o
m
a
t s
r e
t s
N
u
m
b
r e
f o
s
e
n
d
n i
g
d
a
a t
b
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u
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r e
f o
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b
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b
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f o
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n
d
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d
a
a t
b
T
o
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a
d
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t a
N
u
m
b
r e
f o
d
a
a t
e r
c
e
v i
n i
g
)
(
Memory
)
capacity save
function
Slave station
02
(8)
③
Memory in
control module
Adresses continues in order of
Memory in
receiving and sending sequentially.
JW-20CM
C
o
n
e t
n
s t
t o
l a
n i l
k
n
u
m
b
r e
f o
p
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t n
: s
t o
l a
n
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m
b
r e
f o
p
o
n i
s t
f o
s
t a
o i
: n
M
a
i x
m
u
m
5
1
2
p
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t o
l a
n i l
k
n
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m
b
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p
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t n
: s
t o
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n
u
m
b
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p
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s t
f o
s
t a
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: n
M
a
i x
m
u
m
5
1
2
b
y
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n
s t
t a
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n
n i l
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a
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a
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s
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b
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f o
s
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v
e
t s
t a
o i
n
9
4
·
○ : Sending area
● : Receiving area
⑤
⑥
④
M
a
i x
m
u
m
2
0
4
8
p
o
n i
s t
2 (
e
n
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/ g
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c
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v i
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d
a
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6 (
4
b
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) s
M
a
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m
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m
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0
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8
b
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S
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t e
r e
5
6
b
y
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) s
s
a l
v
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s
a l
v
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r e
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