ERL 8700/BUS, Руководство пользователя

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2 Setup and Communications
D01908R02.12 B-PRO User Manual 8700 2-3
Modem Link -
External
Figure 2.2: External Modem Link
Using an external modem, you can also access the relay’s user interface
through a telephone link between the relay and your computer.
Connect the serial port on the external modem to Port 2 on the relay’s back
panel. Both devices are configured as RS-232 DCE devices with female con-
nectors, so the cable between the relay and the modem requires a crossover and
a gender change. Alternatively, you can use the ERLPhase modem port adapter
provided with the relay to make Port 2 appear the same as a PC’s serial port. A
standard modem-to-PC serial cable can then be used to connect the modem and
the relay. For pin-out details see “Communication Port Details” on page 2-8.
Connect the modem to an analog telephone line or switch using a standard RJ-
11 connector.
You must appropriately configure the relay’s Port 2 to work with a modem.
Log into the relay through a direct serial link, go to the
Utilities>Setup>Ports
screen, and set Port 2 Modem option to Yes . Set the Baud Rate as high as pos-
sible — most modems handle 57,600 bps. The Initialize setting allows you to
set the control codes sent to the modem at the start of each connection session.
The factory defaults are: “M0S0=0&B1” for an external modem and
“M0S0=0” for an internal modem.
Modem Link -
Internal
Figure 2.3: Internal Modem Link
You can access the relay’s user interface through a telephone link between the
relay and your computer using an optional internal modem. If the modem has
been installed, Port 5 on the rear panel is labelled “INTERNAL MODEM.”
Connect the relay’s Port 5 to an analog telephone line or switch using a stan-
dard RJ-11 connector.
Desktop Computer
Analog
Telephone
Line
Port 5 - RJ-11 modem
Telephone
System
Analog
Telephone
Line
B-PRO
BUS PROTECTION RELAY
MODEL 8700/BUS
PORT 1
Date &
Time
View
Readings
View
Logs Prev
Next
Target
Clear
Target
2000 JAN 07
RELAY FUNCTIONAL
IRIG-B FUNCTIONAL
SERVICE REQUIRED
TEST MODE
ALARM
Desktop Computer
Analog
Telephone
Line
Port 5 - RJ-11 modem
Telephone
System
Analog
Telephone
Line
B-PRO
BUS PROTECTION RELAY
MODEL 8700/BUS
PORT 1
Date &
Time
View
Readings
View
Logs Prev Next
Target
Clear
Target
2000 JAN 07
RELAY FUNCTIONAL
IRIG-B FUNCTIONAL
SERVICE REQUIRED
TEST MODE
ALARM
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