Automationdirect.com DirectLOGIC DL205 Series, Руководство пользователя

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Using a Password
The DL205 CPUs allow you to use a password to help minimize the risk of unauthorized
program and/or data changes. Once you enter a password you can “lock” the CPU against
access. Once the CPU is locked you must enter the password before you can use a
programming device to change any system parameters.
You can select an 8-digit numeric password. The CPUs are shipped from the factory with a
password of 00000000. All zeros removes the password protection. If a password has been
entered into the CPU you cannot enter all zeros to remove it. Once you enter the correct
password, you can change the password to all zeros to remove the password protection. For
more information on passwords, see the appropriate appendix on auxiliary functions.
WARNING: Make sure you remember your password. If you forget your password you will not be able to
access the CPU. The CPU must be returned to the factory to have the password (along with the ladder
project) removed. It is the policy of AutomationDirect to require the memory of the PLC to be cleared
along with the password.
You can use the D2–HPP Handheld Programmer or
Direct SOFT to enter a password. The following
diagram shows how you can enter a password with the
Handheld Programmer.
There are three ways to lock the CPU once the password has been entered.
1. If the CPU power is disconnected, the CPU will be automatically locked against access.
2. If you enter the password with Direct SOFT, the CPU will be automatically locked against access
when you exit Direct SOFT.
3. Use AUX 83 to lock the CPU.
When you use Direct SOFT, you will be prompted for a password if the CPU has been
locked. If you use the Handheld Programmer, you have to use AUX 82 to unlock the CPU.
Once you enter AUX 82, you will be prompted to enter the password.
NOTE : The
DL240, DL250–1 and DL260 CPUs offer multi–level passwords for even more
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).
DL205 User Manual, 4th Edition, Rev. B
3–18
Chapter 3: CPU Specifications and Operations
1
2
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A
B
C
D
D2–HPP Direct SOFT
PASSWORD
CLR CLR AUX
8
I
1
B
ENT
X X ENT X
Select AUX 81
Enter the new 8-digit password
Press CLR to clear the display
XXXXXXXX
PASSWORD
00000000