Date Code 990215
Serial Port Communications and Commands
10-1
SEL-351P Manual Técnico
SECTION 10: SERIAL PORT COMMUNICATIONS AND
COMMANDS
I
NTRODUCTION
The SEL-351P Recloser Control comes equipped with three EIA-232 serial ports and an optional
EIA-485 4-wire serial port, if ordered. Serial Port 1 (EIA-485, 4-wire), Serial Port 2 (EIA-232),
and Serial Port 3 (EIA-232) are located on the side panel of the recloser controller. Serial Port F
(EIA-232) is located on the front panel.
Connect any of the SEL-351P serial ports to a computer serial port for local communication or to
a modem for remote communication. Other devices useful for communications include the SEL-
PRTU Port Switch and the SEL-2020 Communications Processor. You can use a variety of
terminal emulation programs on your personal computer to communicate with the SEL-351P.
Examples of PC-based terminal emulation programs include: ProComm Plus™, Relay Gold™,
Microsoft Windows
®
Terminal™, Smartcom™, and Crosstalk™. Typically, VT-100 terminal
emulation provides the best display.
Serial Port Default Settings (for all ports)
Baud
Rate
=
2400
Data
Bits
=
8
Parity =
N
Stop
Bits
=
1
RTS/CTS = N
To change the port settings, use the Access Level 2 SET P command (see
Section 9: Setting the
SEL-351P Recloser Control
) or the front-panel SET pushbutton.
Wake-Up Port Default Settings
The wake-up port on the side panel is used to wake-up the SEL-351P by remote means (e.g.,
radio), after it puts itself to sleep to conserve battery energy during a long outage. Two global
settings are made for the wake-up port with the SET G command (Access Level 2 command;
default settings shown):
ABAUD
= 2400
(Wake-up port baud rate [1200 – 38400])
CHWAKE = ABCD
(Wake-up message [4 characters])
Data
Bits
=
8
(fixed
setting)
Parity
=
N
(fixed
setting)
Stop
Bits
=
1
(fixed
setting)
When the SEL-351P receives the wake-up character string (setting CHWAKE), the SEL-351P
wakes up and resumes its protection and control functions. See the
Battery System Monitor
subsection in
Section 8: Breaker/Recloser Monitor, Battery System Monitor, Metering, and
Load Profile Functions
for more information on the SEL-351P putting itself to sleep and the
means to wake it up.
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