Appendix A
Auxiliary Functions
Auxiliary Functions
A–10
You can also enter or modify a password from within DirectSOFT
by using the
PLC/Password sub-menu. This feature works slightly differently in DirectSOFT.
Once you’ve entered a password, the CPU is automatically locked when you exit the
software package. It will also be locked if the CPU is power cycled.
WARNING: Make sure you remember the password before you lock the CPU. Once
the CPU is locked you cannot view, change, or erase the password. If you do not
remember the password, you have to return the CPU to the factory for password
removal.
NOTE: The DL05 CPUs support multi-level password protection of the ladder
program. This allows password protection while not locking the communication port
to an operator interface. The multi-level password can be invoked by creating a
password with an upper case “A” followed by seven numeric characters (e.g.
A1234567).
AUX 82 can be used to unlock a CPU that has been password protected.
DirectSOFT will automatically ask you to enter the password if you attempt to
communicate with a CPU that contains a password.
AUX 83 can be used to lock a CPU that contains a password. Once the CPU is
locked, you will have to enter a password to gain access. Remember, this is not
necessary with DirectSOFT since the CPU is automatically locked whenever you
exit the software package.
AUX 82
Unlock CPU
AUX 83
Lock CPU
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