Mitsubishi MELSEC Q Series Reference Manual page 65

External device side
(Data name)
(Example)
5 0 0 0
35 30 30 30
H H H H
Programmable controller CPU side
(Normal completion)
Text (Response)
H L
D 0 0 0 0 0
44 30 30 30 30 30 46
H H H H H H
(Abnormal completion)
Text (Response)
H L
D 0 0 0
0 0
44 30 30 30 30 30 46
H H H H
H H
3 - 5
3 WHEN COMMUNICATING USING THE QnA COMPATIBLE 3E/3C/4C FRAMES OR 4E FRAME
(a) When using ASCII code in QnA compatible 3E frame
1) When the external device writes data to the programmable controller
CPU on the local station
Programmable controller CPU side
(Command message)
Text (Command)
Q header
H L H L H – – L H
0 0 F F 0 3 F F 0
30 30 46 46 30 33 46 46 30
H H H H H H H H
External device side
(Response message)
Q header
H L H – – L H L H
F F 0 3 F F 0 0 0
46 30 33 46 46 30 30 30
H H H H H H H H H
Q header
H L H – – L H L H
F F 0 3 F F 0 0 0
46 30 33 46 46 30 30 30
H H H H H H H H H
L H – – L H – – L
0 0 0 1 8 0 0 1 0
30 30 30 31 38 30 30 31 30
H H H H H H H H H
Character area B
Response data section
– – L H – – L
0 0 C 0 0 0 0
30 30 43 30 30 30 30
H H H H H H H
(Example) when this is 12 bytes
– – L H – – L H L
0 1 6 C 0 5 1 0 0
30 31 36 43 30 35 31 30 30
H H H H H H H H H
Character area A
H – – L H – – L
H
(Example) when this is 24 bytes
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.
Error information section
H L H – – L H L H
F F 0 3 F F 0 0
46 46 30 33 46 46 30 30
H H H H H H H H
(22 bytes)
Request data section
– – L H – – L
3 - 5