Mitsubishi Electric GOT2000 Series Connection Manual page 110

(b) When writing to a bit device
The following shows an example of writing "1"s to virtual devices M0 and M31.
Item
STX
02
H
Request message
(host GOT)
Response
message during
normal
communication
(GOT host)
(format 1: GOT-A900 Series microcomputer connection (format 1))
Response
message during
(format 2: GOT-A900 Series microcomputer connection (format 2))
faulty
communication
(GOT host)
2 - 40
2.5 Message Formats
M15 to 0
M31 to 16
Before execution
Command Address
W D 8 3 2
57 44 38 33 32
H H H H H
(H) (L) (H) – –
0000
H
0000
H
Message format
Sum check is performed in this range.
Number
Data 1 (M15 to 0)
of points
0 0 2 0 0
30 30 32 30 30
H H H H H
(L) (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
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.
0001
M15 to 0
M31 to 16 8000
After execution
Data 2 (M31 to 16)
0 1 8 0 0
30 31 38 30 30
H H H H H
– (L) (H) – – (L)
0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0
M M M M M M M M M M M M M M M M M M
5 4 3 2 1 0 3 3 2 2 2 2 2 2 2 2 2 2
1 0 9 8 7 6 5 4 3 2 1 0
)
H
H
H
Sum
ETX
Check
0 5 6
30 03 35 36
H H H H
(H) (L)
0 0 0 0
M M M M
1 1 1 1
9 8 7 6