Data Request - Mitsubishi Electric MELSEC-Q Series User Manual

4.4.3

Data Request

The Data Request function accesses the CPU module by inputting the application data of the MC protocol (QnA
compatible 3E frame).
This section explains how to read four points of the data registers D0 through D3 by specifying the application data of
Device Memory Batch Read (command 0401) for the QnA compatible 3E frame.
(1) Data Request screen
Connection target
Command Data
Ex. The following shows an example of the format for the application data of the MC protocol that is
equivalent to the command data.
Text (Command)
destination
Network
Subheader PC No.
No.
H L H L H
5 0 0 0 0 0 F F 0
35 30 30 30 30 30 46 46 30
H H H H H H H H H
CHAPTER 4 VERIFYING OPERATION OF WEB FUNCTION USING SAMPLE SCREEN
Setting item
Q header
Request
Request
destination
Request data
monitoring
module
module length
station
I/O No.
No.
- - L H L H - - L H
3 F F 0 0 0 0 1 8 0
33 46 46 30 30 30 30 31 38 30
H H H H H H H H H H
Specify this part in the command data.
10. 97. 85. 200
500000FF03FF000018001004010000D*0000000004
CPU
Command Subcommand
timer
- - L H - - L H - -
0 1 0 0 4 0 1 0 0 0
30 31 30 30 34 30 31 30 30 30
H H H H H H H H H H
Setting value
Device Number of
Head device
code
L H - - - - L H
0 D 0 0 0 0 0 0 0
30 44 2A 30 30 30 30 30 30 30
H H H H H H H H H H
4
device
- - L
0 0 4
30 30 34
H H H
35