Iec 60870-5-103 Remote Communication Protocol - ABB REF 610 Technical Reference Manual

REF 610
4.1.14.
70
Feeder Protection Relay
Technical Reference Manual
Fig. 4.1.13.-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 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.
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.
REF 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.

IEC 60870-5-103 remote communication protocol

REF 610 supports the IEC 60870-5-103 remote communication protocol
(henceforward referred to as the IEC_103) in the unbalanced transmission mode.
The IEC_103 protocol is used to transfer measurand and status data from the slave
to the master. However, the IEC_103 protocol cannot be used to transfer disturbance
recorder data.
The IEC_103 protocol can be used only through the rear connection of the relay on
the optional communication module. Connecting REF 610 to a fibre-optic
communication bus requires a fibre-optic communication module. The line-idle
state of the fibre-optic communication module can be selected either via the HMI or
the SPA bus. According to the IEC_103 standard, however, the line-idle state is
FrConREF 610_a
1MRS 755310