Communication Ports - ABB REM 610 Technical Reference Manual

1MRS 752263-MUM
4.1.12.
Motor protection Relay
Technical Reference Manual

Communication ports

REM 610 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 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 Serial communication connections.
Fig. 4.1.12.-1 Front connection (1) 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
(ABB art. no 1MRS050698). The cable is connected to the serial RS-232 port of the
PC. The optical stage 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
• Number of stop bits
• Parity
• Baud rate
Relay data such as events, setting values and all input data and memorized values
can be read via the front communication port.
When setting values are altered via the front communication port, the relay will
check that the entered parameter values are within the permitted setting range. If an
entered value is too high or too low, the setting value will remain unchanged.
REM 610 has a counter which can be accessed via COMMUNICATION under
CONFIGURATION in the HMI menu. The counter value is set to zero when the relay
receives a valid message.
FrConREM610_b
7
1
even
9.6 kbps
REM 610
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