Mitsubishi MELSEC Q Series Reference Manual page 91
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 - 31
3 WHEN COMMUNICATING USING THE QnA COMPATIBLE 3E/3C/4C FRAMES OR 4E FRAME
(b)
When the external device writes data to 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
H
Sum check is performed within this range. ((Ex.) When the result of the addition is 85E
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
H
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
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
–
L
H
L
H
L
F
F
0
0
0
0
Q
A
C
46
46
30
30
30
30
51
41
43
H
H
H
H
H
H
H
H
–
L
H
L
H
L
Q
N
A
F
F
0
0
0
0
51
4E
41
46
46
30
30
30
30
H
H
H
H
H
H
H
H
Character area C
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.
E
T
X
K
4B
03
H
H
H
E
T
X
(For 7151
)
H
H
–
–
L
K
7
1
5
1
4B
37
31
35
31
03
H
H
H
H
H
H
H
E
T
X
H
L
5
E
03
35
45
H
H
H
3 - 31
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