Schweitzer Engineering SEL-387-0, Instruction Manual

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Date Code 20170601 Instruction Manual SEL-387-0, -5, -6 Relay
Section 7
Serial Port Communications
and Commands
Overview
The SEL-387 Relay is equipped with four serial ports:
➤
One EIA-232 port on the front
➤
Two EIA-232 ports on the rear
➤
One EIA-485 port on the rear
Establish communication by connecting a terminal to one of the serial ports
with the appropriate cable. Connect computers, modems, protocol converters,
printers, an SEL-2032, an SEL-2030, or an SEL-2020 Communications
Processor, an SEL-2885, a SCADA serial port, and/or RTUs for local or
remote communications.
Use one of the SEL protocols for communication. The SEL ASCII commands
and structure are defined in detail in this section. Other SEL protocols used for
interfacing other intelligent electronic devices for automated communication
are described in detail in the appendices.
Establish Communication
Establish communication with the SEL-387 through one of its serial ports by
using standard “off-the-shelf” software and the appropriate cable connections,
depending on the device.
Software
Use any system that emulates a standard terminal system. Many terminal
emulation programs will work with the SEL-387. For the best display, use
VT-100 terminal emulation or the closest variation.
The default communication settings for the serial ports follow:
➤
Baud Rate = 2400
➤
Data Bits = 8
➤
Parity = N
➤
Stop Bit = 1
➤
RTS/CTS = N
Change the port settings, using the front panel or the SET P <Enter>
command.