Mitsubishi Electric GOT2000 Series Connection Manual page 134

(b) When reading a bit device
The following shows an example of reading four bytes 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)
Response
message
during faulty
communication
(GOT host)
2 - 72
2.5 Message Formats
(format 14: GOT-F900 Series microcomputer connection (format 1))
Com-
STX
mand
02
H
(format 15: GOT-F900 Series microcomputer connection (format 2))
Com-
STX
mand
A
02 41
H H
(format 14: GOT-F900 Series microcomputer connection (format 1))
STX
02
0
M
7
(format 15: GOT-F900 Series microcomputer connection (format 2))
Data 1
STX
(M7 to 0)
0
02 30
H
(H)
0 0 0 0
M M M M
7 6 5 4
M15 to 0 0001
8000
M31 to 16
Message format
Station No. Address
A 1 5 2 0
41 31 35 32 30
H H H H H
(H) (L) (H) –
Station No.
Address
1 5 2 0 0
31 35 32 30 30
H H H H H
(H) (L) (H) – –
Sum check is performed in this range.
Data 1 Data 2 Data 3
(M7 to 0) (M15 to 8) (M23 to 16)
0 1 0 0 0
30 31 30 30 30
H H H H H
(H) (L) (H) (L) (H)
0 0 0 0 0 0 1 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
6 5 4 3 2 1 0 1 1 1 1 1 1 9 8 2 2
5 4 3 2 1 0 3 2
Sum check is performed in this range.
Data 2 Data 3
(M15 to 8) (M23 to 16)
1 0 0 0 0
31 30 30 30 30
H H H H H
(L) (H) (L) (H) (L)
0 0 0 1 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 M M M M
3 2 1 0 1 1 1 1 1 1 9 8 2 2 2 2 1 1
5 4 3 2 1 0 3 2 1 0 9 8
NAK
15
H
H
H
Number of
CR
bytes
0 0 0 4
30 30 30 34 0D
H H H H H
– (L) (H) (L)
Sum
Number of
ETX
bytes Check
0 0 4 D
30 30 34 03 44
H H H H H
(L) (H) (L) (H)
Data 4
CR
(M31 to 24)
0 8 0
30 38 30 0D
H H H H H
(L) (H) (L)
0 0 0 0 0 0 1 0 0 0 0 0 0 0
M M M M M M M M M M M M M M
2 2 1 1 1 1 3 3 2 2 2 2 2 2
1 0 9 8 7 6 1 0 9 8 7 6 5 4
Sum
Data 4
ETX
Check
(M31 to 24)
8 0 8 C
38 30 03 38 43
H H H H H
(H) (L) (H) (L)
0 0 1 0 0 0 0 0 0 0
M M M M M M M M M M
1 1 3 3 2 2 2 2 2 2
7 6 1 0 9 8 7 6 5 4
0
30
H
(L)
H