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7SR11 & 7SR12 Settings & Instruments Guide
2.1.4
Configuring Relay Serial Data Communication
Using the keys on the relay fascia scroll down the settings menus into the 'communications' menu and if
necessary change the settings for the communication port you are using on the relay. Reydisp software uses
IEC60870-5-103 protocol to communicate.
When connecting the relay to a pc using the front USB port, the Reydisp setting software will automatically detect
the relay without making any setting changes in the relay first as long as the USB is selected to IEC60870-5-103.
COM1-RS485 Port and COM2-USB Port
Description
COM1-RS485 Protocol
Selects protocol to use for COM1-RS485
COM1-RS485 Station Address
IEC 60870-5-103 Station Address
COM1-RS485 Baud Rate
Sets the communications baud rate for COM1-
RS485
COM1-RS485 Parity
Selects whether parity information is used
COM1-RS485 Mode
Selects whether the port is Local or Remote.
COM2-USB Protocol
Selects protocol to use for COM2-USB
COM2-USB Station Address
IEC 60870-5-103 Station Address
COM2-USB Mode
Selects whether the port is Local or Remote.
DNP3 Unsolicited Events
Allows unsolicited event support in the relay.
When Enabled, unsolicited event transmission
can be controlled by the Master. When
Disabled, Master requests are ignored.
DNP3 Destination Address
The address of the master to which unsolicited
events will be sent.
DNP3 Application Timeout
Chapter 2 Page 18 of 20
Range
OFF, IEC60870-5-103,
MODBUS-RTU, DNP3
0, 1 ... 65533, 65534
75, 110, 150, 300, 600, 1200,
2400, 4800, 9600, 19200,
38400
NONE, ODD, EVEN
Local, Remote, Local Or
Remote
OFF, DNP3, ASCII, MODBUS-
RTU, IEC60870-5-103
0, 1 ... 65533, 65534
Local, Remote, Local Or
Remote
Disabled, Enabled
0, 1 ... 65533, 65534
5, 6 ... 299, 300
Default
Notes
IEC60870-5-103
0
Address given to relay
to identify that relay
from others which may
be using the same path
for communication as
other relays for
example in a fibre optic
hub
19200
19200
EVEN
EVEN
Remote
Remote
IEC60870-5-103
0
Address given to relay
to identify it for
connection to the USB
front port
Local
Local
Disabled
Disabled
0
This setting is only
visible when DNP3
Unsolicited Events is
Enabled
10s
10s
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