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MELSOFT
7 MANAGEMENT OF DATA IN THE PLC CPU
7.4.4 Formatting the PLC memory
Format the program memory, standard RAM and memory card of the QCPU (Q mode)
or the built-in RAM and IC memory card of the QnACPU.
Formatting is valid for SRAM and ATA.
This function is invalid for flash ROM.
Note that this function is enabled in the STOP mode of the PLC CPU.
Perform this function after placing the PLC CPU in the STOP status with the PLC CPU
switch or by performing remote operation (refer to Section 7.4.2).
Click the Format PLC memory
button in the Delete PLC data dialog box.
1)
3)
2)
4
)
No. Item Description
1) Connection target information Shows the information of the specified PLC CPU.
2) Target memory Sets the object of PLC memory formatting.
3) Format Type
• Do not create a user setting system area (the necessary system area only)
Only the system area that is essential for the applicable memory is created.
• Create a user setting system area (an area which speeds up monitoring
from other stations)
A mandatory system area and a system area for high-speed monitoring
from other stations (user-set) are created.
The setting range is 0 to 15K steps.
4)
Execute
button
Click this button after setting the necessary settings.