Mitsubishi Electric GT16, User Manual

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61. MICROCOMPUTER CONNECTION (SERIAL)
61.5 Message Formats
61 - 27
60
CONNECTION T
O
MURA
T
E
C
CONTROLL
ER
61
MI
C
R
O
C
OMPUTER
CONNECTION (SE
R
IA
L)
62
MICR
OCOMPUTER
CONNECTION (E
T
HE
RN
E
T)
63
MO
D
B
US(R)/
R
T
U
CONNE
C
T
ION
64
MO
DBUS(R)/
TCP
CON
N
E
C
T
ION
65
V
NC(R) S
E
R
V
E
R
CONNECTION
(4) Random write in word units (RW) command
The following shows an example of writing "0064
H
" and "1" to virtual devices D100 and M0, respectively.
M15 to 0
0000
H
D100
0000
H
M15 to 0
0064
H
D100
0001
H
Before execution After execution
Item Message format
Request message
(host
GOT)
Response message
during normal
communication
(GOT
host)
Response message
during faulty
communication
(GOT
host)
(format 1: GOT-A900 Series microcomputer connection (format 1))
(format 2: GOT-A900 Series microcomputer connection (format 2))
Sum check is performed in this range.
02
H
STX
03
H
ETX
(H) (L)
C 5
43
H
35
H
Sum
Check
(H) (L)
Address 2
8
38
H
– –
2
32
H
0
30
H
3
33
H
0 0 0 0 0 0 0 0
M
0
M
1
M
2
M
3
M
4
M
5
M
6
M
7
M
8
M
9
M
1
0
M
1
2
M
1
3
M
1
4
M
1
5
M
1
1
1 0 0 0 0 0 0 0
(H) (L)
Data 2 (M15 to 0)
0
30
H
– –
0
30
H
1
31
H
0
30
H
(H) (L)
R W
52
H
57
H
Command
(H) (L)
Address 1
0
30
H
– –
1
31
H
0
30
H
0
30
H
(H) (L)
Data 1 (D100)
0
30
H
– –
6
36
H
4
34
H
0
30
H
*1
Following*1
06
H
ACK
15
H
NAK
The above is a case where
the sum check error (06
H
)
has occurred.
15
H
NAK
06
H
Error
code