Mitsubishi MELSEC Q Series Reference Manual page 164

(Data name)
External device
side
H
(Data name)
Programmable controller CPU side
(Data name)
External device
side
L H
(Data name)
Programmable controller CPU side
3 - 104
3 WHEN COMMUNICATING USING THE QnA COMPATIBLE 3E/3C/4C FRAMES OR 4E FRAME
POINT
If an intelligent function module or a programming tool tries to monitor the C24/E71
where conditional monitoring is being performed, the C24/E71 will return an error
completion code to the external device. (When unconditional monitoring is being
performed, the C24/E71 can perform conditional or unconditional monitoring.)
Command
0403
0802
(1) Data order and contents of character areas during random read
The following section explains the data order and contents of character areas
during random read.
The order and contents of the character areas are different from when other
commands are used
(a) Data order of character areas when a monitor condition is not designated
1) Data order while communicating in ASCII code
- - L H - - L H L H L H -
Devices for the number of word access points
2) Data order while communicating in binary code
Character area (corresponding character area A)
L - H
L H L - H
Devices for the number
of word access points
Function
Random read in word units function
Registered device memory monitor function
Character area A
- - - L
H - - - - L
H - - L
H -
For the number of word
access points
L - H
L - H
Devices for the number
of double word accesses points
H - - - - L H - - -
Devices for the number of double word
accesses points
Character area B
- L H - - - - - - L H - -
For the number of double word access points
L H L H
For the number of word
access points
Character area (corresponding character area A)
L - - H L -
For the number of double word access points
Reference section
This section
Section 3.3.9 (4)
- L
- - - - L
- H
3 - 104