Mitsubishi Electric GOT1000 Series Connection Manual page 139

(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
(format 14: GOT-F900 Series microcomputer connection (format 1))
Request message
(format 15: GOT-F900 Series microcomputer connection (format 2))
(host GOT)
(format 14: GOT-F900 Series microcomputer connection (format 1))
Response message
during normal
(format 15: GOT-F900 Series microcomputer connection (format 2))
communication
(GOT host)
Response message
during faulty
communication
(GOT host)
M15 to 0
M31 to 16
Message format
Com-
STX Station No.
mand
A 1 5 2
02 41 31 35 32
H H H H H
(H) (L) (H)
Com-
Station No.
STX Address
mand
A 1 5 2 0
02 41 31 35 32 30
H H H H H H
(H) (L) (H) –
Sum check is performed in this range.
Data 1 Data 2
STX
(M7 to 0) (M15 to 8)
0 1 0
02 30 31 30 30
H H H H
(H) (L) (H) (L)
0 0 0 0 0 0 0 1 0 0 0 0 0 0
M M M M M M M M M M M M M M
7 6 5 4 3 2 1 0 1 1 1 1 1 1
5 4 3 2 1 0
Sum check is performed in this range.
Data 1 Data 2
STX
(M7 to 0) (M15 to 8) (M23 to 16)
0 1 0 0
02 30 31 30 30 30
H H H H H
(H) (L) (H) (L) (H)
0 0 0 0 0 0 0 1 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
7 6 5 4 3 2 1 0 1 1 1 1 1 1 9 8 2
5 4 3 2 1 0 3
2. MICROCOMPUTER CONNECTION (SERIAL)
0001
H
8000
H
Number of
Address CR
bytes
0 0 0 0 4
30 30 30 30 34 0D
H H H H H
– – (L) (H) (L)
Number of
ETX
Check
bytes
0 0 0 4 D
30 30 30 34 03 44
H H H H H
– (L) (H) (L) (H)
Data 3 Data 4
CR
(M23 to 16) (M31 to 24)
0 0 0 8 0
30 30 38 30 0D
H H H H H H
(H) (L) (H) (L)
0 0 0 0 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 M M M M
9 8 2 2 2 2 1 1 1 1 3 3 2 2 2 2 2 2
3 2 1 0 9 8 7 6 1 0 9 8 7 6 5 4
Sum
Data 3 Data 4
ETX
Check
(M31 to 24)
0 0 8 0 8
30 38 30 03 38
H H H H H H
(L) (H) (L) (H)
0 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 M
2 2 2 1 1 1 1 3 3 2 2 2 2 2 2
2 1 0 9 8 7 6 1 0 9 8 7 6 5 4
NAK
15
H
2.5 Message Formats
H
Sum
0
30
H H
(L)
C
43
H
(L)
2 - 67
1
2
3
4
5
6
7
8