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

REU 610
5.1.14.
58
Voltage Relay
Technical Reference Manual - ANSI Version
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
checks that the entered parameter values are within the permitted setting
range. If an entered value is too high or too low, the setting value remains
unchanged.
The relay has a counter which can be accessed via CONFIGURATION
\COMMUNICATION 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

The relay supports the IEC 60870-5-103 remote communication protocol in
the unbalanced transmission mode. The IEC 60870-5-103 protocol is used to
transfer measurand and status data from the slave to the master. However, the
IEC 60870-5-103 protocol cannot be used to transfer disturbance recorder
data.
The IEC 60870-5-103 protocol can be used only through the rear connection
of the relay on the optional communication module. Connecting the relay 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 60870-5-103
standard, the line-idle state is "light on". To ensure communication, the line-
idle state should be the same for both the master and the slave device. The
connection topology can be selected to be either loop or star, the default being
loop, and either via the HMI or the SPA bus. The selected line-idle state and
connection topology apply irrespective of which rear communication protocol
is active.
The relay uses the SPA bus protocol as default when the optional
communication module is in use. The protocol selection is memorized and is
therefore always activated when the rear connection is in use. The baud rate
can be selected either via the HMI or the SPA bus. According to the
IEC 60870-5-103 standard, the baud rate is 9.6 kbps. When the IEC 60870-5-
103 protocol is active, event masks are not in use. Consequently, all events in
the selected configuration set are included in the event reporting.
The relay is provided with two different selectable configuration sets, of
which configuration set 1 is used by default.
Configuration set 1 is intended to be used when the optional I/O module is
not installed. Configuration set 2 includes additional information, for example
output contact events 6...8 (SO3...SO5) and digital input events 3...5 (DI3...
DI5), provided that the optional I/O module is installed.
1MRS755972