Mitsubishi GOT1000 Series Connection Manual page 761

3 Message format
(1) Batch read in word units (RD) command
(a) When reading a word device
The following shows an example of reading the two points of the virtual devices D100 and
D101.
(Assuming D100="0102
Item
Request message
(host GOT)
Response
message during
normal
communication
(GOT host)
(format 1: GOT-A900 series microcomputer connection (format 1))
Response
message during
(format 2: GOT-A900 series microcomputer connection (format 2))
faulty
communication
(GOT host)
" and D101="0304
H
Message format
STX Command Address
R D 0 1
02 52 44 30 31 30
H H H H H
(H) (L) (H)
Sum check is performed in this range.
STX Data 1 (D100)
0 1 0 2
02 30 31 30 32 30
H H H H H
(H) (L) (H)
Sum check is performed in this range.
Error
NAK
code
15 06
H
The above is a case
where the sum check error
(06 ) has occurred.
H
19.5.3 Formats 1, 2 (GOT-A900 series microcomputer connection)
" are stored.)
H
D100 0102
H
D101 0304
H
Number of Sum
ETX
points
Check
0 0 0 2 B
30 30 32 03 42
H H H H H H
(L) (H) (L) (H)
Sum
Data 2 (D101) ETX
Check
0 3 0 4 8
33 30 34 03 38
H H H H H H
(L) (H)
NAK
15
H
H
19.5 Message Formats
C
43
H
(L)
D
44
H
(L)
19 - 31
17
18
19
20
21
22
23
24