Mitsubishi Electric GT14, User Manual

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61 - 58
61. MICROCOMPUTER CONNECTION (SERIAL)
61.5 Message Formats
(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.)
M15 to 0
M31 to 16
0001
H
8000
H
Item Message Formats
Request message
(host
GOT)
(format 14: GOT-F900 Series microcomputer connection (format 1))
(format 15: GOT-F900 Series microcomputer connection (format 2))
Response message
during normal
communication
(GOT
host)
(format 14: GOT-F900 Series microcomputer connection (format 1))
(format 15: GOT-F900 Series microcomputer connection (format 2))
Response message
during faulty
communication
(GOT
host)
02
H
STX
0D
H
CR
(H) (L)
Station No.
1 5
31
H
35
H
(H) (L)
Address
2
32
H
– –
0
30
H
(H) (L)
Number of
bytes
0 4
30
H
34
H
A
41
H
0
30
H
0
30
H
Com-
mand
Sum check is performed in this range.
02
H
STX
03
H
ETX
(H) (L)
D 0
44
H
30
H
Sum
Check
(H) (L)
Station No.
1 5
31
H
35
H
(H) (L)
Address
2
32
H
– –
0
30
H
(H) (L)
Number of
bytes
0 4
30
H
34
H
A
41
H
0
30
H
0
30
H
Com-
mand
02
H
STX
0D
H
CR
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
0 0 0 0 0 0 0 0
M
8
M
9
M
1
0
M
1
2
M
1
3
M
1
4
M
1
5
M
1
1
0 0 0 0 0
M
0
M
1
M
2
M
3
M
4
M
5
M
6
M
7
1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0
(H) (L)
Data 1
(M7 to 0)
0
30
H
1
31
H
(H) (L)
Data 2
(M15 to 8)
0
30
H
0
30
H
(H) (L)
Data 3
(M23 to 16)
0
30
H
0
30
H
(H) (L)
Data 4
(M31 to 24)
8
38
H
0
30
H
Sum check is performed in this range.
02
H
STX
03
H
ETX
(H) (L)
8 C
38
H
43
H
Sum
Check
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
0 0 0 0 0 0 0 0
M
8
M
9
M
1
0
M
1
2
M
1
3
M
1
4
M
1
5
M
1
1
0 0 0 0 0
M
0
M
1
M
2
M
3
M
4
M
5
M
6
M
7
1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0
(H) (L)
Data 1
(M7 to 0)
0
30
H
1
31
H
(H) (L)
Data 2
(M15 to 8)
0
30
H
0
30
H
(H) (L)
Data 3
(M23 to 16)
0
30
H
0
30
H
(H) (L)
Data 4
(M31 to 24)
8
38
H
0
30
H
15
H
NAK