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Mitsubishi Electric GOT1000 Series Connection Manual Page 108

Microcomputers, modbus products, peripherals.
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(4) Random write in word units (RW) command
The following shows an example of writing "0064
Item
STX
02
Request message
(host
GOT)
Response message
during normal
communication
(GOT
host)
(format 1: GOT-A900 Series microcomputer connection (format 1))
Response message
(format 2: GOT-A900 Series microcomputer connection (format 2))
during faulty
communication
(GOT
host)
2 - 36
2. MICROCOMPUTER CONNECTION (SERIAL)
2.5 Message Formats
D100
0000
M15 to 0
0000
Before execution
Command
ETX
Following*1
R
W
52
57
03
H
H
H
H
(H)
(L)
Sum check is performed in this range.
*1
Address 1
0
1
0
0
30
31
30
30
H
H
H
H
(H)
(L)
" and "1" to virtual devices D100 and M0, respectively.
H
H
H
After execution
Message format
Sum
Check
C
5
43
35
H
H
(H)
(L)
Data 1 (D100)
Address 2
0
0
6
4
8
3
30
30
36
34
38
33
H
H
H
H
H
(H)
(L)
(H)
ACK
06
H
NAK
15
H
Error
NAK
code
15
06
H
H
The above is a case where
the sum check error (06
)
H
has occurred.
D100
0064
H
M15 to 0
0001
H
Data 2 (M15 to 0)
2
0
0
0
0
32
30
30
30
30
H
H
H
H
H
H
(L)
(H)
0
0
0
0
0
0
0
0
0
0
M
M
M
M
M
M
M
M
M
M
1
1
1
1
1
1
9
8
7
6
5
4
3
2
1
0
1
31
H
(L)
0
0
0
0
0
1
M
M
M
M
M
M
5
4
3
2
1
0

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