Mitsubishi Electric GOT2000 Series Connection Manual page 82

(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 - 32
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