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GE Multilin 489 Generator Management Relay 3-7
3 USER INTERFACES 3.2 SOFTWARE INTERFACE
3
3.2.3 CONFIGURATION
1. Connect the computer running 489PC to the relay via one of the RS485 ports (see Section 2.2.12: RS485 Communica-
tions Ports on page 2–14 for wiring diagram and additional information) or directly via the RS232 front port.
2. Start 489PC. When starting, the software attempts to communicate with the relay. If communications are established,
the relay graphic shown on the monitor will display the same information as the actual relay. That is, the LED status
and display information will also match that of the actual relay.
3. If 489PC cannot establish communications, the following message will appear:
4. Select OK to edit the communications settings (or alternately, select the Communications > Computer menu item to
edit communications settings at any time. The COMMUNICATIONS/COMPUTER dialog box will appear containing the
various communications settings. The settings should be modified as follows:
Figure 3–4: COMMUNICATION/COMPUTER DIALOG BOX
5. To begin communications, click the ON button. The status section indicates the communications status. The message
“489PC is now talking to a 489” is displayed when communications are established. As well, the bottom right corner of
the 489PC window will indicate “Communicating.”
808744A1.CDR
Set the based on user preference. In “Communicate with Relay” mode, 489PC will attempt
to establish communications immediately upon startup. While in the “File mode /w default settings”, 489PC
waits for the user to click the ON button before attempting communications – this mode is preferred when
the 489PC is being used without an attached 489 relay.
Startup Mode
Set to match the type of RS232/RS485 converter. If connected through the 489 front panel
RS232 port, select “No Control Type”. If connected through a GE Multilin F485 converter unit, select
“MULTILIN RS232/RS485 CONVERTOR”. If connected through a modem, select “Modem”. If a third-
party RS232/RS485 converter is being used, select the appropriate control type from the available list based
on the manufacturer’s specifications.
Control Type
Set to match the 489 PARITY setpoint (see S1 489 SETUP). If connected through the 489 front panel
RS232 port, set to “None”.
Parity
Set to match the 489 BAUD RATE setpoint (see S1 489 SE
TUP).Baud Rate
Set to where the 489 relay is connected (e.g. COM1
or COM2). On most computers, COM1 is used by the mouse device and as such COM2 is usually
available for communications.
Communcation Port # theCOM port on your local PC
Set to match the 489 SLAVE ADDRESS setpoint (see S1 489 SETUP).Slave Address