11-4
ASCII Command Interface
BE1-951
The ACCESS (A) command and the EXIT (E) command are used to change relay settings, reset report
registers, and enable control commands through a serial port. These commands prevent changes from
being made concurrently from two areas. For example, a user cannot make changes through COM0 at the
same time a remote user is making changes through COM2.
ACCESS Command
Purpose:
Reads or sets access level in order to change settings.
Syntax:
ACCESS[=<password>]
Comments: The ACCESS command must be used before any changes to settings can be made. Available
ACCESS privileges are summarized in the following paragraphs.
READ-ONLY. This is the default access privilege when no passwords are active. Read-only access allows
you to read settings and reports but not make settings changes.
PRIVILEGE G: GLOBAL ACCESS. Global access is obtained by password G (PWG). Global access
permits entry of any command with no restrictions.
PRIVILEGE S: SETTING ACCESS. Setting access is obtained by password S (PWS). Setting access
allows changes to any settings.
PRIVILEGE C: CONTROL ACCESS. Control access is obtained by password C (PWC). Control access
enables relay control operations.
PRIVILEGE R: REPORT ACCESS. Report access is obtained by password R (PWR). Report access
enables report operations to be performed.
An access privilege is obtained only when the appropriate password is entered. When a valid password is
entered, the relay responds with the access privilege provided by the password entered. If an invalid
password is entered, an error message is returned. If password protection is disabled in one or more
privileges, then entering any string will provide access to the unprotected privileges.
ACCESS Command Examples
1.
A valid password is entered.
>ACCESS=OPENUP
ACCESS GRANTED: GLOBAL
2.
An invalid password is entered.
>ACCESS=POENUP
ACCESS DENIED
3.
The current access privilege is read.
>ACCESS
ACCESS: GLOBAL
Exit Command. After changes are made, the new data is saved or discarded using the EXIT command.
Prior to saving or discarding any changes, you must confirm that you wish to exit the programming mode.
There are three exit options: Y (Yes), N (No), or C (Continue).
EXIT Command
Purpose:
Exit the programming mode.
Syntax:
EXIT (Note: Relay will prompt for verification.)
Comments: It’s important to make all programming changes before executing the EXIT command. This
prevents a partial or incomplete protection scheme from being implemented.
When access privileges are obtained, all programming changes are made to a temporary, scratchpad copy
of relay settings. These changes aren’t saved to nonvolatile memory and initiated until the EXIT command
is invoked and confirmed. After the EXIT command is entered, the relay prompts to confirm that the new
data should be saved. Three options, Y, N, or C, or available. Entering Y will save the data. If N is entered,
the relay will clear the changes and resume operating with the old settings. Entering C will abort the EXIT
command and allow programming to continue.
