Mitsubishi MELSEC Q Series Reference Manual page 82

External device side
S
T
(Data name)
X
H
(Example) F
02 46
H H
Programmable controller CPU side
(Normal completion)
S
T
X
H
F
02 46
H H
(Abnormal completion)
S
T
X
H
F
02 46
H H
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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 L
9 0 0 0 0 F F 0 0
39 30 30 30 30 46 46 30 30
H H H H H H H H
Sum check is performed within this range. ((Ex.) When the result of the addition is 710
External device side
(Response message)
L H L H L H L H L
9 0 0 0 0 F F 0 0
39 30 30 30 30 46 46 30 30
H H H H H H H H
L H L H L H L H L
9 0 0 0 0 F F 0 0
39 30 30 30 30 46 46 30 30
H H H H H H H H
H – – L H – – L
H
E
T
X
Q A C K
51 41 43 4B 03
H H H H H H
(For 7151 )
H
H – – L
Q N A K 7 1 5 1
51 4E 41 4B 37 31 35 31
H H H H H H H H H
Character area C
)
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
03
H
E
T
X
H L
1 0
03 31 30
H H H
3 - 22