Mitsubishi Electric GOT2000 Series Connection Manual page 104

(4) Random write in word units (RW) command
The following shows an example of writing "0064H" and "1" to virtual devices D100 and M0, respectively.
Item
Request message
(host GOT)
Response
message during
normal
communication
(GOT host)
Response
message during
faulty
communication
(GOT host)
2 - 42
2.5 Message Formats
D100
M15 to 0
Before execution
STX Command
Following*1
R W
02 52 57
H H H
(H) (L)
Sum check is performed in this range.
*1
Address 1
0 1 0
30 31 30
H H H
(H) – –
(format 1: GOT-A900 Series microcomputer connection (format 1))
(format 2: GOT-A900 Series microcomputer connection (format 2))
0000
H
0000
H
Message format
Sum
ETX
Check
C 5
03 43 35
H H H
(H) (L)
Data 1 (D100)
0 0 0 6 4
30 30 30 36 34
H H H H H
(L) (H) – – (L)
ACK
06
H
NAK
15
H
Error
NAK
code
15 06
H H
The above is a case where
the sum check error (06
has occurred.
D100 0064
M15 to 0 0001
After execution
Address 2 Data 2 (M15 to 0)
8 3 2 0 0
38 33 32 30 30
H H H H H
(H) – – (L) (H)
0 0 0 0 0
M M M M M
1 1 1 1 1
5 4 3 2 1
)
H
H
H
0 0 1
30 30 31
H H H
– – (L)
0 0 0 0 0 0 0 0 0 0 1
M M M M M M M M M M M
1 9 8 7 6 5 4 3 2 1 0
0