6
-
107
CHAPTER6 FUNCTIONS
1
2
3
4
5
6
7
8
6.19 System Protection
6.19 System Protection
The CPU module has protection functions (system protection) to prevent programs being modified by a third party
other than the designer with GX Developer or serial communication module.
*1: The Basic model QCPU does not support the system protection in units of memory cards and for entire CPU module since it cannot use
a memory card.
The following functions set in the PLC parameter dialog box or with the dip switches of the CPU module are performed even
when the dip switch of the CPU module (SW1) is turned on and the system protection is activated.
Note21
• Boot from the standard ROM and memory card
• Auto writing to the standard ROM
Table6.29 System protection types
Protection target
File that can be
protected
Description
Method
Valid
timing
Reference
Entire CPU module
*1
All files
(devices are also
protected.)
Prohibits all remote
operation directions from
such as GX Developer to
the CPU module.
Turn on the dip switch of the
CPU module (SW1).
Always
-
In units of memory
cards
*1
All files
Prohibits writing to a
memory card.
Turn on the write protect
switch of a memory card.
Always
-
In units of files
• Program
• Device comment
• Initial device value
• Changes the attribute
for each file to either of
the following.
• Read/write (reading/
writing to programs)
prohibition
• Write prohibition
(operations regarding
writing such as writing
to programs and tests)
Make setting in the
Password registration
screen.
Always
Note21
Note6.21
The Basic model QCPU does not support the system protection with the dip switch.
Basic
Содержание 00JCPU
Страница 1: ......
Страница 2: ......
Страница 96: ...2 51 2 4 5 Character string data 1 Definition The CPU module uses shift JIS code character strings...
Страница 541: ......
Страница 542: ......