Mitsubishi QCPU (Q Mode), Руководство пользователя

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MELSEC-Q
7 FUNCTION
7.17 System Protect
The High Performance model QCPU has a few protection functions (system protect) to
prevent the program changes by a third party other than the designer (from GX
Developer function or serial communication module).
There are the following methods for system protects.
Item to protect Protect valid file Protection description Method
Valid
Timing
Remarks
All of CPU All files
Prohibits all write/control
instructions to the High
Performance model QCPU
Set the High
Performance model
QCPU system setting
switch SW1 on.
Always
Valid for
devices too
Memory card
module
All files
Performs drive protect for the
memory card, and write protect.
Set write-protect switch
on the memory card on.
Always —
File module
Programs
Device comments
Device initial values
Changes the attribute for each
file as follows:
1) Read/Write display prohibit
2) Write prohibit
Change the attribute for
the file in the Password
Registration.
Always —
The control instruction, read/write display, and write mentioned above are as follows:
Item Description
Control instruction
High Performance model QCPU operation instruction by
remote operation. (Remote RUN, remote STOP, etc.)
Read/Write display Program read/write operations.
Write
Operation related with write processing such as program
writes the program and tests.
POINT
The following functions set the “(PLC) Parameter" and High Performance model
QCPU dip switches are performed even when the High Performance model QCPU
system's SW1 setup switch is set to ON and the system protect function is
activated.
• Booting from the standard ROM and the memory card
• Automatic write to standard ROM
7.17.1 Password registration
Password is used to prohibit reading and writing data of the program and comments in
High Performance model QCPU from GX Developer.
The Password Registration is set for the specified memory (program memory/standard
memory/memory card) program file, device comment file, and device initial file.
Either of the following two descriptions is to be registered.
• The file name is not displayed and read/write cannot be performed as well.
• Write cannot be performed to the file. (Read only)
If the password is registered, file operations from GX Developer cannot be performed
unless the same password is input.