ABB REU 610, Technical Reference Manual

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5.1.13. 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.
A051551
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
®
‚
Standard specifications or using a specific front
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
1MRS755972
Voltage Relay
Technical Reference Manual - ANSI Version
REU 610