Mitsubishi MELSEC Q Series Reference Manual page 77

External device side
E
N
(Data name)
Q
H
(Example) F
05 46
H H
Programmable controller CPU side
(Normal completion)
S
T
X
H
F
02 46
H H
(Abnormal completion)
N
A
K
H
F
15 46
H H
3 - 17
3 WHEN COMMUNICATING USING THE QnA COMPATIBLE 3E/3C/4C FRAMES OR 4E FRAME
(2) Communication in format 1 (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
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 61C
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
Sum check is performed within this range.
((Ex.) When the result of the addition is 321
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
Character area B
E
T
X
H L
2 1
32 31
H 03
H H
H
)
H
(For 7151 )
H
H – – L
7 1 5 1
37 31 35 31
H H H H H
Character area A
)
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.
H L
1 C
31 43
H H
3 - 17