Communication Ports - ABB REM 610 Technical Reference Manual

REM 610 REM 610
5.1.12.
70
Motor Protection 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 further information on optional rear communication module connections, refer
to Section 5.2.2. Serial communication connections.
Fig. 5.1.12.-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
‚ Standard specifications or using a specific front communication cable
®
the IrDA
(refer to Section 7. Ordering information). 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
*
Relay data such as events, setting values and all input data and memorized values
can be read via the front communication port.
1MRS755537
A051551