Mitsubishi Q02CPU

6
- 117
6.19 System Protect
6
FUNCTIONS
6.19 System Protect
The CPU model 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).
Note45
* The control instruction, read/write display, and write mentioned above are as follows:
POINT
The following functions set the "(PLC) Parameter" and CPU module dip switches
are performed even when the CPU module system's SW1 setup switch is set to
ON and the system protect function is activated.
Note6.45
Note46
• Booting from the standard ROM and the memory card
• Automatic write to standard ROM
Table6.31 System protect types
Item to protect Protect valid file Protection description Method
Valid
Timing
Remarks
All of CPU
Note6.44
All files
Prohibits all write/control
instructions to the CPU
module
Set the CPU module
system setting switch
SW1 on.
Always
Valid for
devices too
Memory card
module
Note6.44
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:
• Read/Write display
prohibit
• Write prohibit
Change the attribute
for the file in the
Password Registration.
Always
--
Note45
Item Description
Control instruction
CPU module 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.
Note46
Basic
Note6.44
Basic
Note6.44
The Basic model QCPU does not support the system protection on a whole CPU and memory
card basis.
Basic
Note6.44
Note6.45
Basic
Since the Basic model QCPU does not include the system protect function by DIP switch setting,
it is not necessary to be conscious of the restrictions described in POINT.
Basic
Note6.45