9440300990 24-1
DECS-250 Security
24 • Security
DECS-250 security is provided in the form of passwords which control the type of operations allowed by a
particular user. Passwords can be tailored to provide access to specific operations. Additional security is
available by controlling the type of operations allowed through certain DECS-250 communication ports.
Security settings are uploaded and downloaded separately from the settings and logic. See the
BESTCOMSPlus
®
chapter for more information on uploading and downloading security.
Password Access
BESTCOMSPlus Navigation Path: Settings Explorer, General Settings, Device Security Setup, User
Name Setup
A username and password can be established for one of six functional access areas within the DECS-
250. These access areas are listed in Table 24-1 according to rank. A username and password with
higher access can be used to gain access to operations controlled by a password with lower access. For
example, a settings-level username and password has access to operations protected by the settings-,
operator-, control-, and read-level usernames and passwords. This screen cannot be accessed when in
Live Mode.
Table 24-1. Password Access Levels and Descriptions
Access to security setup, communications settings, and software upgrades.
Includes levels 2, 3, 4, 5, and 6 below.
Access to create and edit programmable logic. Includes levels 3, 4, 5, and 6 below.
Access to edit settings. Does not include logic settings, security setup,
communications settings, and software upgrades. Includes levels 4, 5, and 6 below.
Access to set date and time, trigger and clear logs, and edit energy values.
Includes levels 5 and 6 below.
Access to change setpoints, raise and lower, reset alarms, and preposition.
Includes level 6 below.
Access to read all system parameters, metering, and logs. No write access.
Lowest access level. All access is denied.
Password Creation and Configuration
Usernames and passwords are created and configured in BESTCOMSPlus on the Username Setup tab
(Figure 24-1) of the Device Security Setup area. To create and configure a username and password,
perform the following steps.
1. In the BESTCOMSPlus settings explorer, select User Name Setup. This selection is located
under General Settings, Device Security Setup. When prompted, enter a username of “A” and a
password of “A” and log on. This factory-default username and password allows administrator-
level access. It is highly recommended that this factory-default password be changed immediately
to prevent undesired access.
2. Highlight an “UNASSIGNED” entry in the user list. (Highlighting a previously-established
username will display the password and access level for the user. This enables the password and
access level for an existing user to be changed.)
3. Enter the desired username.
4. Enter the desired password for the user.
5. Reenter the password created in step 4 to verify the password.
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