4 HUMAN INTERFACES
4 HUMAN INTERFACES 4.1 URPC
The URPC software provides a graphical user interface (GUI) as one of two human interfaces to a UR device. The alter-
nate human interface is implemented via the device's faceplate keypad and display (see FACEPLATE INTERFACE section
in this chapter).
URPC provides a single facility to configure, monitor, maintain, and trouble-shoot the operation of relay functions, con-
nected over local or wide area communication networks. It can be used while disconnected (i.e. off-line) or connected (i.e.
on-line) to a UR device. In off-line mode, settings files can be created for eventual downloading to the device. In on-line
mode, you can communicate with the device in real-time.
The URPC software, provided with every L90 relay, can be run from any computer supporting Microsoft Windows
or NT. This chapter provides a summary of the basic URPC software interface features. The URPC Help file provides
details for getting started and using the URPC software interface.
To start using the URPC program, a Site List must first be created. See the instructions in the URPC Help program under
the topic "Creating a Site List".
a) ENGAGING A COMMUNICATING DEVICE
The URPC software may be used in on-line mode (relay connected) to directly communicate with a UR relay. Communicat-
ing relays are organized and grouped by communication interfaces and into sites. Sites may contain any number of relays
selected from the UR product series.
b) USING SETTINGS FILES
The URPC software interface supports three ways of handling changes to relay settings:
In off-line mode (relay disconnected) to create or edit relay settings files for later download to communicating relays.
While connected to a communicating relay to directly modify any relay settings via relay data view windows, and then
save the settings to the relay.
You can create/edit settings files and then write them to the relay while the interface is connected to the relay.
Settings files are organized on the basis of file names assigned by the user. A settings file contains data pertaining to the
following types of relay settings:
Factory default values are supplied and can be restored after any changes.
c) CREATING / EDITING FLEXLOGIC™ EQUATIONS
You can create or edit a FlexLogic™ equation in order to customize the relay. You can subsequently view the automatically
generated logic diagram.
d) VIEWING ACTUAL VALUES
You can view real-time relay data such as input/output status and measured parameters.
GE Power Management
L90 Line Differential Relay
4.1.1 GRAPHICAL USER INTERFACE
4.1.2 CREATING A SITE LIST