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(2) In case that setting the data link (save memory function) when the master station and all
slave stations are JW-21MN's.
Memory addresses inside control module of slave station continue in order of receiving and
sending.
ａ
ｃ
0
ｂ
ｄ
0
Flag
area
11
- Set the relay link area, the register link area, and the flag area within the settings range of page
11-11, 12 and 23. Be careful not to double any address allocation of these.
- Set a
0
and 22) and set f
Parameter for setting in master station
Top address of relay link area a
Top address of register link area b
Number of sending bytes of relay link area
c
, c
to c
0
1
Number of sending bytes of register link
area d
Top address of flag area (master station) e
* Number of receiving bytes of slave station (h
Select self-setting or "same as number of sending bytes (c
parameter (007720 to 007723) of slave station.
Note: When installing JW-21MN without 30Hn mark or 30H mark into JW20/JW20H, number
of receiving bytes of each slave station is the same as number of sending bytes.
Master station 00
Slave station 01
(8)
(Data memory)
(Data memory)
ａ
0
(Within JW-21MN)
ｆ
*
1
ａ
1
ｈ
1
ｈ
1
n
ｃ
n
ｈ
ｆ
+
1
1
ｃ
1
ｃ
1
ｃ
n
ｂ
ｇ
0
*
1
ｂ
1
ｉ
1
ｉ
1
n
ｄ
n
ｉ
ｇ
+
1
1
ｄ
1
ｄ
1
ｄ
n
ｅ
ｅ
0
1
24
24
bytes
bytes
to e
, h
to i
above for parameters of master station and slave station (see page 11-5, 6
n
1
n
/f
/g
/g
marked "*" by module No. switch of the JW-21MN (see page 11-2).
1
n
1
n
0
n
, d
to d
0
1
n
ｎ＝０２
to
７７
(8)
(8)
ｆ
*
(Within control
1
module)
ｆ
ｇ
*
1
ｇ
Parameter for setting in slave station
, a
to a
Top address of flag area (slave station) e
1
n
e
n
, b
to b
Number of receiving bytes of relay link area
0
1
n
h
to h
1
n
Number of receiving bytes of register link
area i
to i
1
n
.
0
to h
, i
to i
)
1
n
1
n
11-8
○ : Send
Slave station n
(Data memory)
● : Receive
ｆ
※
n
h
n
ｃ
+
n
n
ｃ
n
- Omitted a memory map
inside control module.
ｇ
*
n
ｉ
n
ｄ
+
n
n
ｄ
n
ｅ
n
24
bytes
to c
, d
to d
)" according to
1
n
1
n
to
1
*
V2
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