Table of Contents
Advertisement
7
DATA COMMUNICATION USING THE BIDIRECTIONAL PROTOCOL
Q series C24
Transmission area
(buffer memory)
Transmission
(00
data count
B
designation
(42
D
(44
Transmission
F
(46
data designation
1
(31
3
(33
7 - 18
(2) Transmission data arrangement
The following example shows an arrangement of the transmission data to be sent
to the external device when storing it in the transmission area.
(Example) When "ABCDEFG123" is sent:
5
)
(05
)
H
H
Sum
A
check
)
(41
)
code
H
H
C
H
L
)
(43
)
H
H
02
77
H
H
E
)
(45
)
H
H
G
)
(47
)
H
H
2
)
(32
)
H
H
Transmission data (response message)
3
2
1
G
F
E
D
33
32
31
47
46
45
44
H
H
H
H
H
H
H
Receive data (response message)
ACK
06
H
(Normal completion)
Data
C
B
A
length
(0005
)
ENQ
H
H
L
05
43
42
41
00
H
H
H
H
H
MELSEC-Q
External device
7 - 18
Advertisement
Table of Contents
Troubleshooting
