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