Omron CP1H CPU Operation Manual page 412

Program Protection
Write-protection
Using Passwords
Note
378
CPU Unit DIP Switch
Pin
SW1 User Program Memory Write Protection
Confirming the User Program Date
The dates the program and parameters were created can be confirmed by
checking the contents of A90 to A97.
Auxiliary Area Words
Name Address
User Program A90 to A93
Date
Parameter Date A94 to A97
The program (or selected tasks) can also be write-protected if the write pro-
tection option is selected from the CX-Programmer when a password is being
registered for the entire program or those selected tasks. The write protection
setting 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
enabled/disabled with an option setting.
Password?
The user program cannot be overwritten.
CPU Unit
1. If the selected tasks are write-protected by selecting this option when reg-
istering a password, only the tasks (program) that are password-protected
will be protected from overwriting. It will still be possible to overwrite other
tasks with operations such as online editing and task downloading.
Name
Description
The time and date the user program was last over-
written in memory is given in BCD.
A90.00 to A90.07
A90.08 to A90.15
A91.00 to A91.07
A91.08 to A91.15
A92.00 to A92.07
A92.08 to A92.15
A93.00 to A93.07
The time and date the parameters were last overwrit-
ten in memory is given in BCD. The format is the
same as that for the User Program Date given above.
Overwriting can be prohibited with password protection,
regardless of the DIP switch setting.
Memory Cassette
The user program cannot be overwritten.
Section 6-6
Settings
ON: Protected
OFF: Not protected
Seconds (00 to 59 BCD)
Minutes (00 to 59 BCD)
Hour (00 to 23 BCD)
Day of month (01 to 31 BCD)
Month (01 to 12 BCD)
Year (00 to 99 BCD)
Day (00 to 06 BCD)
Day of the week:
00: Sunday, 01: Monday,
02: Tuesday, 03: Wednesday,
04: Thursday, 05: Friday,
06: Saturday