Omron CJ - 09-2009 Operation Manual page 85

CJ1-H/CJ1M CPU Unit Ver. 2.0 Upgrades
CPU Unit Ver. 2.0 or Later
and CX-Programmer
Ver. 4.0 or Higher
Note
1,2,3...
With the CPU Unit Ver. 2.0 and later CPU Units, the CPU Unit's UM area can
be write protected by turning ON pin 1 of the CPU Unit's DIP switch. The pro-
gram (or selected tasks) can also be write-protected if the write protection
option is selected from the CX-Programmer when a password is being regis-
tered for the entire program or those selected tasks. The write protection set-
ting can prevent unauthorized or accidental overwriting of the program.
CX-Programmer
When a password is being registered for the entire user
program or selected tasks, program write-protection can be
Password?
enabled/disabled with an option setting.
The user program cannot be overwritten.
CPU Unit
The user program cannot be overwritten.
1. If the selected tasks or program are write-protected by selecting this option
when registering a password, only the tasks (program) that are password-
protected will be protected from overwriting. It will still be possible to over-
write other tasks or programs with operations such as online editing and
task downloading.
2. All tasks (programs) can be overwritten when program read protection is
not enabled.
3. The setting to enable/disable creating file memory program files will not
take effect unless the program is transferred to the CPU Unit. Always trans-
fer the program after changing this setting.
Operating Procedure
1. When registering a password in the UM read protection password Box or
Task read protection Box, select the Prohibit from overwriting to a protect-
ed program Option.
Properties
2. Either select PLC - Transfer - To PLC to transfer the program or select
PLC - Protection - Set Password and click the OK button.
Overwriting can be prohibited with password protection,
regardless of the DIP switch setting.
Memory Card
Section 1-6
37