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Message Formats
(1) Batch read (0) command (w/out station No.), batch read (A) command (w/station No.)
(a) When reading a word device
The following shows an example of reading four bytes of virtual devices R100 to R101 from the GOT at
station No.15.
(Assuming R100=3D21
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)
, R101=3604
are stored.)
H
H
R100
3D21
R101
3604
Message Formats
Com-
STX
Station No.
mand
A
1
5
0
02
41
31
35
30
H
H
H
H
H
(H)
(L)
(H)
Com-
STX
Station No.
Address
mand
A
1
5
0
0
02
41
31
35
30
30
H
H
H
H
H
H
(H)
(L)
(H)
–
Sum check is performed in this range.
Data 1
Data 2
STX
(R100 upper)
(R100 lower)
3
D
2
02
H
33
32
44
31
H
H
H
(H)
(L)
(H)
(L)
Data 1
Data 2
STX
(R100 upper)
(R100 lower)
(R101 upper)
3
D
2
1
02
33
44
32
31
33
H
H
H
H
H
(H)
(L)
(H)
(L)
(H)
Sum check is performed in this range.
61. MICROCOMPUTER CONNECTION (SERIAL)
H
H
Number
Address
CR
of bytes
0
C
8
0
4
30
43
38
30
34
0D
H
H
H
H
H
–
–
(L)
(H)
(L)
Number of
ETX
bytes
Check
C
8
0
4
E
43
38
30
34
03
45
H
H
H
H
H
–
(L)
(H)
(L)
(H)
Data 3
Data 4
CR
(R101 upper)
(R101 lower)
1
3
6
0
4
0D
H
33
30
36
34
H
H
H
H
H
(H)
(L)
(H)
(L)
Data 3
Data 4
Sum
ETX
(R101 lower)
Check
3
6
0
4
A
36
30
34
03
41
H
H
H
H
H
H
(L)
(H)
(L)
(H)
NAK
15
H
61.5 Message Formats
H
Sum
9
39
H
H
(L)
A
41
H
(L)
61 - 57
56
57
58
59
60
61
62
63
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