Mitsubishi MELSEC Q Series Reference Manual page 90
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
S
T
(Data name)
X
H
(Example)
F
02
46
38
H
H
Programmable controller CPU side
(Normal completion)
S
T
X
H
F
02
46
38
H
H
(Abnormal completion)
S
T
X
H
F
02
46
38
H
H
3 - 30
3 WHEN COMMUNICATING USING THE QnA COMPATIBLE 3E/3C/4C FRAMES OR 4E FRAME
(3) Communication in format 3 (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
–
8
0
0
0
0
F
F
0
3
30
30
30
30
46
46
30
33
H
H
H
H
H
H
H
H
Sum check is performed within this range. ((Ex.) When the result of the addition is 76D
External device side
(Response message)
L
H
L
H
L
H
L
H
–
8
0
0
0
0
F
F
0
3
30
30
30
30
46
46
30
33
H
H
H
H
H
H
H
H
Sum check is performed within this range.
((Ex.) When the result of the addition is 592
L
H
L
H
L
H
L
H
–
8
0
0
0
0
F
F
0
3
30
30
30
30
46
46
30
33
H
H
H
H
H
H
H
H
–
L
H
L
H
L
H
–
F
F
0
0
0
0
46
46
30
30
30
30
H
H
H
H
H
H
H
–
L
H
L
H
L
F
F
0
0
0
0
Q
A
46
46
30
30
30
30
51
41
H
H
H
H
H
H
H
H
H
H
–
L
H
L
H
L
Q
N
F
F
0
0
0
0
51
4E
46
46
30
30
30
30
H
H
H
H
H
H
H
H
H
Character area A
–
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
C
K
9
43
4B
03
39
H
H
H
)
E
T
X
(For 7151
)
H
H
–
–
L
A
K
7
1
5
1
41
4B
37
31
35
31
03
H
H
H
H
H
H
H
E
T
X
H
L
6
D
03
36
44
H
H
H
L
2
32
H
H
3 - 30
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