Mitsubishi GOT1000 Series Connection Manual page 762

(b) When reading a bit device
The following shows an example of reading the two points of the virtual devices M0 to M31.
(Assuming M0="1" and M31="1" are stored.)
Item
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)
19 - 32
19.5 Message Formats
19.5.3 Formats 1, 2 (GOT-A900 series microcomputer connection)
M15 to 0
M31 to 16
Message format
STX Command Address
R D 8 3
02 52 44 38 33 32
H H H H H
(H) (L) (H)
Sum check is performed in this range.
Sum check is performed in this range.
STX Data 1 (M15 to 0)
0 0 0 1
02 30 30 30 31 38
H H H H H
(H) (L) (H)
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0
M M M M M M M M 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 3 3
5 4 3 2 1 0 1 0
Error
NAK
code
15 06
H
The above is a case where
the sum check error (06
has occurred.
0001
H
8000
H
Number of
ETX
points Check
2 0 0 2 C
30 30 32 03 43
H H H H H
(L) (H) (L) (H)
Data 2 (M31 to 16) ETX
Check
8 0 0 0 8
30 30 30 03 38
H H H H H
(L) (H)
0 0 0 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
2 2 2 2 2 2 2 2 2 2 1 1 1 1
9 8 7 6 5 4 3 2 1 0 9 8 7 6
NAK
15
H
H
)
H
Sum
8
38
H H
(L)
Sum
C
43
H H
(L)