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MELSOFT
7 MANAGEMENT OF DATA IN THE PLC CPU
7.4 PLC CPU Related Functions
This section describes the functions related to the memory and operation of the QCPU
(Q mode) or QnACPU.
7.4.1 Keyword setup
Set a new keyword to the QnACPU, or change, delete or cancel its keyword.
(1) Setting a new keyword
Set a new keyword to the QnACPU or change its keyword.
Click the Keyword setup
button in the Delete PLC data dialog box, and click the
Register keyword
button in the Keyword setup dialog box.
1)
2
)
3
)
4)
6)
5)
No. Item Description
1) Target memory Sets the memory whose keyword is to be registered or changed.
2) Keyword Set the keyword (6 numeric characters).
3) Registration condition
Select the functions restricted by the keyword.
For the A series this is reading/writing and disabling of the display only.
Read/Write/Display protection
Writing, reading, verification, deletion, and list display are restricted by the keyword.
Write protection
Writing is restricted by the keyword.
4)
Execute
button
Click this button after setting the necessary settings.
However, in the case of an keyword change or condition change, the dialog box shown
below is displayed.
5) Keyword Sets the keyword that has been registered for the PLC.
6)
Execute button
Click this button after setting the necessary settings.
• Operating Procedure
1. Set 1), 2) and 3) in the Register new keyword dialog box.
2. Click 4).
For an keyword change, the present keyword is now displayed in the dialog box.
3. Set 5) and click 6).