Communication Ports - ABB REU 610 Technical Reference Manual

1MRS755972
5.1.13.
Voltage Relay
Technical Reference Manual - ANSI Version

Communication ports

The relay is provided with an optical communication port (infrared) on the
front panel. Rear communication is optional and requires a communication
module, which can be provided with either a plastic fibre-optic, combined
fibre-optic (plastic and glass) or RS-485 connection. The relay is connected to
an automation system via the rear connection. The optional rear
communication module allows the use of either the SPA bus, IEC 60870-5-
103 or Modbus communication protocol.
For connection to the DNP 3.0 communication system, the relay can be
provided with an optional DNP 3.0 rear communication module with RS-485
connection.
For further information on optional rear communication module connections,
refer to Section 5.2.2. Serial communication connections.
Fig. 5.1.13.-1 Communication port
1) Front connection for local communication
The relay is connected to a PC used for local parameterization via the infrared
port on the front panel. The front connection allows the use of the SPA bus
protocol only.
The optical front connection galvanically isolates the PC from the relay. The
front connection can be used in two different ways: wirelessly using a PC
compatible to the IrDA
communication cable (refer to Section 6.1. Accessories). The cable is
connected to the serial RS-232 port of the PC. The optical element of the
cable is powered by RS-232 control signals. The cable has a fixed baud rate
of 9.6 kbps.
The following serial communication parameters are to be set for RS-232:
Number of data bits: 7
*
Number of stop bits: 1
*
Parity: even
*
Baud rate: 9.6 kbps
*
‚ Standard specifications or using a specific front
®
REU 610
A051551
57