Basler Electric BE1-700 - Manual (Page 247)

SECTION 11
• ASCII COMMAND INTERFACE
INTRODUCTION
Relay and power system information can be retrieved from a remote location using the ASCII command
interface. The ASCII command interface is also used to enter settings, retrieve reports and metering
information, and perform control operations. A communication port on the relay front panel provides a
temporary, local interface for communication. Communication ports on the rear panel provide a
permanent communication interface.
Front and rear panel communication ports can be connected to computers, terminals, serial printers,
modems, and intermediate communication/control interfaces such as RS-232 serial multiplexors. BE1-
700 communication protocols support ASCII and binary data transmissions. ASCII data is used to send
and receive human readable data and commands. Binary data is used for computer communication and
transmission of raw oscillographic fault data if available.
Modbus
™ protocol is also available. Refer to Basler publication 9376700991 for the Modbus instruction
manual. For information about other protocols, consult your Basler Electric representative. Note: ASCII
commands, which support Ethernet-enabled relays, can be found in Section 15, BESTNet
Communication.
SERIAL PORT
Communication connections consist of one front Data Communication Equipment (DCE) RS-232 port,
one rear RS-485 port, rear IRIG port, and a rear optional RJ45 Ethernet port (COM1). The BE1-700
communication protocol is compatible with readily available modem/terminal software. If required,
password protection provides security against unauthorized operation. Detailed information about making
communication connections is provided in Section 12, Installation. Communications port setup is covered
in this section. Security settings are covered in Section 9, Security.
RS-232 Port
One female RS-232 (DB-9) connector is provided on the front panel and is designated COM0. It supports
full-duplex operation.
RS-485 Port
RS-485 terminal block connections are located on the rear panel and designated COM2. This port
supports half-duplex, multi-drop operation. Multi-drop operation is possible if a polling address is
programmed for the port.
Ethernet Port
Optional Ethernet capability (COM1) is available. See Section 15, BESTNet Communication.
ASCII COMMAND INTERFACE
A computer terminal or PC running terminal emulation software can be used at either of the two serial
ports to send commands to the relay. Simple ASCII command language is used to communicate with the
relay. When the relay receives a command, it responds with the appropriate action. ASCII commands can
be used in human to machine interactions and in batch download type operations.
NOTE
For security reasons, all change passwords are disabled by default on the
(optional) Ethernet port. You must use a serial connection to enable and upload
the desired change functions before changes will be allowed from the Ethernet
port. See Section 9, Security, for details.
9376700990 Rev M BE1-700 ASCII Command Interface 11-1