Mitsubishi Electric GT14, User Manual

Page: 1464 / 1546

62 - 18
62. MICROCOMPUTER CONNECTION (ETHERNET)
62.4 Message Formats

Message Formats
(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
H
, D101=0304
H
are stored.)
D100
D101
0102
H
0304
H
Item Message Formats
Request message
(host
GOT)
(format 1: GOT-A900 Series microcomputer connection (ASCII))
(format 2: GOT-A900 Series microcomputer connection (Binary))
Response message
during normal
communication
(GOT
host)
(format 1: GOT-A900 Series microcomputer connection (ASCII))
(format 2: GOT-A900 Series microcomputer connection (Binary))
Response message
during faulty
communication
(GOT
host)
(H) (L)
Command
R D
52
H
44
H
(H) (L)
Address
0 1
30
H
31
H
0
30
H
0
30
H
(H) (L)
Number of
points
0 2
30
H
32
H
Command
R D
Address
00
H
64
H
Number
of points
02
H
(H) (L)
0 1
30
H
31
H
0
30
H
2
32
H
(H) (L)
0 3
30
H
33
H
0
30
H
4
34
H
Data 1 (D100) Data 2 (D101)
01
H
02
H
03
H
04
H
Data 1
(D100) Data 2
(D101)
The above is a case
where the sum check error
(06
H
) has occurred.
15
H
NAK
06
H
Error
code