Mitsubishi GOT1000 Series - Page 762

19 - 32
19.5 Message Formats
19.5.3 Formats 1, 2 (GOT-A900 series microcomputer connection)
(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 Message format
Request message
(host GOT)
Response
message during
normal
communication
(GOT host)
Response
message during
faulty
communication
(GOT host)
(format 1: GOT-A900 series microcomputer connection (format 1))
(format 2: GOT-A900 series microcomputer connection (format 2))
M15 to 0
M31 to 16
0001H
8000H
Sum check is performed in this range.
02
H
STX
03
H
ETX
(H) (L)
8C
38
H43H
Sum
Check
(H) (L)
Command
RD
52
H 44H
(H) (L)
Address
83
38
H 33H
2
32
H
0
30
H
(H) (L)
Number of
points
02
30
H 32H
Sum check is performed in this range.
02
H
STX
03
H
ETX
(H) (L)
8C
38
H 43H
Sum
Check
(H) (L)
Data 1 (M15 to 0)
0
30
H
0
30
H
1
31
H
0
30
H
(H) (L)
8
38
H
0
30
H
0
30
H
0
30
H
M
1
6
M
1
7
M
1
8
M
1
9
M
2
0
M
2
1
M
2
2
M
2
3
M
2
4
M
2
5
M
2
6
M
2
7
M
2
8
M
2
9
M
3
0
M
3
1
00000000
M
0
M
1
M
2
M
3
M
4
M
5
M
6
M
7
M
8
M
9
M
1
0
M
1
2
M
1
3
M
1
4
M
1
5
M
1
1
100000000000000100000000
Data 2 (M31 to 16)
15H
NAK
The above is a case where
the sum check error (06
H)
has occurred.
15
H
NAK
06
H
Error
code