Mitsubishi MELSEC Q Series Reference Manual page 88
With melsec communication protocol
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Also See for MELSEC Q Series:
- Programming manual (1296 pages) ,
- User manual (814 pages) ,
- Structured programming manual (268 pages)
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External device side
E
N
(Data name)
Q
H
(Example)
0
05
30
H
H
Programmable controller CPU side
(Normal completion)
S
T
X
H
0
02
30
30
H
H
(Abnormal completion)
N
A
K
H
0
30
30
15
H
H
3 - 28
3 WHEN COMMUNICATING USING THE QnA COMPATIBLE 3E/3C/4C FRAMES OR 4E FRAME
(2) Communication in format 2 (for communication in ASCII code)
(a)
When the external device reads data from the programmable controller
CPU on the local station
Programmable controller CPU side
(Command message)
L
H
L
H
L
H
L
H
L
0
F
8
0
0
0
0
F
F
30
46
38
30
30
30
30
46
46
H
H
H
H
H
H
H
H
Sum check is performed within this range. ((Ex.) When the result of the addition is 7CA
External device side
(Response message)
H
L
H
L
H
L
H
L
L
0
F
8
0
0
0
0
F
F
46
38
30
30
30
30
46
46
H
H
H
H
H
H
H
H
Sum check is performed within this range.
((Ex.) When the result of the addition is 4CF
H
L
H
L
H
L
H
L
L
0
F
8
0
0
0
0
F
F
46
38
30
30
30
30
46
46
H
H
H
H
H
H
H
H
H
–
–
L
H
L
H
L
0
3
F
F
0
0
0
0
30
33
46
46
30
30
30
30
H
H
H
H
H
H
H
H
H
H
–
–
L
H
L
H
L
0
3
F
F
0
0
0
0
30
33
46
46
30
30
30
30
H
H
H
H
H
H
H
H
H
)
H
H
–
–
L
H
L
H L
0
3
F
F
0
0
0 0
30
33
46
46
30
30
30
30
H
H
H
H
H
H
H
H
H
Character area A
H
–
–
L
H
–
–
L
)
H
The arrangement of the data items differs
according to the command and sub command.
Refer to the sections explaining commands
found in Section 3.3.2 and after for details.
Character area B
E
T
X
H
L
C
F
03
43
46
H
H
H
(For 7151
)
H
H
–
–
L
7
1
5
1
37
31
35
31
H
H
H
H
H
L
C
A
43
41
H
H
3 - 28
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