Schneider Electric 890USE17700 - Manual (Page 164)

Advanced Configuration Features
164 890USE17700 April 2004
Protecting Configuration Data
Introduction As part of a custom configuration, you can password-protect an Advantys STB
island. This protection restricts write privileges to authorized personnel and prevents
unauthorized users from overwriting the configuration data currently stored in Flash
memory.
You must use the Advantys configuration software to password-protect an island’s
configuration.
Protection
Feature If a configuration is protected, access to it is restricted in the following ways:
z An unauthorized user is unable to overwrite the current configuration data in
Flash memory.
z
The presence of a removable memory card (See Installing the STB XMP 4440
Optional Removable Memory Card, p. 50) is ignored. The configuration data
currently stored in Flash cannot be overwritten by data on the card.
z The RST button (See The RST Button, p. 55) is disabled, and pushing it has no
effect on island bus operations.
The island runs normally when it is in protected mode. All users have the ability
to monitor (read) the activity on the island bus.
Password
Characteristics A password must meet the following criteria:
z It must be between 0 and 6 characters in length.
z Only alphanumeric ASCII characters are permitted.
z The password is case-sensitive.
If password protection is enabled, your password is saved to Flash memory (or to a
removable memory card) when you save the configuration data.
Note: A protected configuration is inaccessible to anyone who does not know the
password. Your system administrator is responsible for keeping track of the
password and the list of authorized users. If the assigned password is lost or
forgotten, you will be unable to change the island’s configuration.
If the password is lost and you need to reconfigure the island, you will need to
perform a destructive reflash of the NIM. This procedure is described on the
Advantys STB product Web site at www.schneiderautomation.com.