Communication Ports - Toshiba GRL100-101A Instruction Manual

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4.1.2

Communication Ports

The following interfaces are provided as communication ports:
• RS232C port
• RS485, Fibre optic or Ethernet LAN port for serial communication
• IRIG-B port
• Interface port for telecommunication link
RS232C port
This connector is a standard 9-way D-type connector for serial port RS232C transmission and is
mounted on the front panel. By connecting a personal computer to this connector, setting and
display functions can be performed from the personal computer.
RS485, Fibre optic or Ethernet LAN port
One or two serial communication ports can be provided. In the single-port type, it is connected to
the RSM (Relay Setting and Monitoring system) via the protocol converter G1PR2 or
IEC60870-5-103 communication via BCU/RTU (Bay Control Unit / Remote Terminal Unit) to
connect between relays and to construct a network communication system. (See Figure 4.4.1 in
Section 4.4.)
In the case of the two-port type, one port (COM1 or OP1) can be used for the relay setting and
monitoring (RSM) system or IEC60870-5-103 communication, while the other port (COM2 or
OP2) is used for IEC60870-5-103 communication only.
Screw terminal for RS485, ST connector for fibre optic or RJ45 connector for Ethernet LAN
(10Base-T) is provided on the back of the relay as shown in Figure 4.1.2.1. RS232, 10BASE-FL
and 100BASE-FX can be provided.
IRIG-B port
The IRIG-B port is mounted on the transformer module, and collects serial IRIG-B format data
from the external clock to synchronize the relay calendar clock. The IRIG-B port is isolated from
the external circuit by a photo-coupler. A BNC connector is used as the input connector.
This port is on the back of the relay, as shown in Figure 4.1.2.1.
Interface port for telecommunication link
The optical or electrical interface port for telecommunication link is provided on the back of the
relay as shown in Figure 4.1.2.1. The connector using for the optical interface port is the ST type
(for 2 km class), LC type (for 30 km class) or Duplex LC type (for 80 km class) connector and
the connector for the electrical interface port is the D-sub connector.
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