GE LPS-O Instruction Manual page 255

12 ASCII COMMUNICATIONS
12 ASCII COMMUNICATIONS 12.1 INTRODUCTION
The LPS-O has a built-in ASCII interface which will communicate using any terminal emulator, such as Pro-
comm Plus or Microsoft Windows Terminal. The user must initiate all commands by typing them. Some of the
commands have abbreviations which are represented by the capital letters in a command. If there are no lower
case letters in a command, the command does not have an abbreviation and the whole command must be
typed.
Any operation that can be performed at the keypad can also be performed through the ASCII communications
interface. The communications passwords apply to the ASCII interface and must be used to gain the neces-
sary privilege level. If the passwords are not known or forgotten, they are available from the Keypad using the
INF key.
Once the terminal emulator has been started, the COM port the relay or modem is connected to must be setup
to match the relay for bits (8), parity (none), stop bits (1) and Xon/Xoff flow control.
Once the terminal emulator is ready and the relay is connected, press the ENTER key. The standard error
message should appear. If it does not check the connections and settings. All the commands that follow can
then be used. Use the Save to File command (or its equivalent) from your ASCII communications program to
save relay responses in a file.
1. When a prompt says "Press", this indicates that as soon as that key is pressed the relay will respond with-
out the user pressing the ENTER key. When a prompt says "Enter", the entered keystrokes will not be pro-
cessed until the ENTER key is pressed.
2. The CAPITAL letters in a command name must be typed to execute the command. The lowercase letters
that continue the command are optional. For any command to be executed the ENTER must be pressed.
3. If a mistake is made while entering commands, a message will be displayed and the correct information
can be entered after the prompt at the end of the error message. No action that will cause the relay to
change settings, operate a breaker, or change the relay operation in any way will be done without user ver-
ification (for example: TRIP BREAKER 1, are you sure (Y/N): ?).
4. The relay responses below are in order of appearance. Where there is a user choice, all possible
responses may not be listed. However, any unlisted responses will be similar to others listed.
5. Help is available before typing a command by typing HELP at the LPS_xxx> prompt and pressing the
ENTER key. Some commands have built-in help as well.
6. There are two kinds of command prompts. The colon (:) is used to indicate the relay is not logged in and is
waiting for the LOGIN command. After a successful login, the prompt changes to depending on the privi-
lege level. See Table 12–1: ASCII PROMPTS.
Table 12–1: ASCII PROMPTS
Privilege Level
VIEW LPS_INF>
ACTIONS LPS_ACT>
SETTINGS LPS_SET>
MASTER LPS_MST>
GE Power Management
Prompt
LPS-O Line Protection Relay
12.1 INTRODUCTION
12.1.1 DESCRIPTION
12.1.2 ASCII INTERFACE
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