Device Read/Write - Mitsubishi Electric MELSEC-Q Series User Manual

4.4.1

Device Read/Write

The Device Read and Device Write functions (QnA compatible 3E frame commands 0401 and 1401) read and write
the bit device memory (16-bit units) and word device memory (1-word units) of the local station's CPU module in batch
mode.
For details on the MC protocol, refer to the Reference Manual.
This section explains an example of reading four points of the data registers D0 through D3.
(1) Device Read Screen
Connection target
Start device
Number of device
(2) Execution result
(a) Normal completion
CHAPTER 4 VERIFYING OPERATION OF WEB FUNCTION USING SAMPLE SCREEN
Setting item Setting value
10.97.85.200
D0
4
4
29