User`s guide

5.2. System SetUp Ports
Ports 1 and 2 are designated as System SetUp Ports, and will
therefore always permit password protected access to Supervisor
Level command functions, even when the unit is reinitialized to
default parameters.
In order to ensure that access to command functions is always
available, Ports 1 and 2 cannot be configured as Buffer Mode or
Passive Mode Ports (Buffer and Passive Mode Ports are not able
to access the Command Mode.) In addition, Ports 1 and 2 always
permit password protected access to Supervisor Level
commands; the Supervisor Mode cannot be disabled at these
two ports.
5.3. Password Functions
The APS features two different types of passwords; the
Supervisor Password and the Port (User) Passwords. The
Supervisor Password allows system administrators to invoke unit
configuration commands, and the Port Passwords allow users to
access specific ports in order to create connections between
permitted ports or view port configuration parameters.
5.3.1. The Supervisor Password
The Supervisor Password allows access to higher level APS-8M
configuration commands, which administrators can employ to
select communication parameters, assign port access rights, and
perform other system management tasks.
After the Supervisor Password has been defined (via the System
Parameters menu), the APS-8M will display a password prompt
whenever you attempt to access the command mode. If the
correct Supervisor Password is entered, the APS command mode
then starts up in Supervisor Mode. Supervisor Level commands
are summarized in Section 11.3 of this User’s Guide.
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APS-8M User’s Guide