4. Move down to the next cell (RP1 Address). This cell controls the IEC 60870-5-103 address of the
IED. Up to 32 IEDs can be connected to one spur. It is therefore necessary for each IED to have a
unique address so that messages from the master control station are accepted by one IED only.
IEC
60870-5-103 uses an integer number between 0 and 254 for the Relay Address. It is important
that no two IEDs have the same IEC 60870 5 103 address. The IEC 60870-5-103 address is then
used by the master station to communicate with the IED.
COMMUNICATIONS
RP1 address
162
5. Move down to the next cell (RP1 Baud Rate). This cell controls the baud rate to be used. Two baud
rates are supported by the IED, 9600 bits/s and 19200 bits/s. Make sure that the baud rate
selected on the IED is the same as that set on the master station.
COMMUNICATIONS
RP1 Baud rate
9600 bits/s
6. Move down to the next cell (RP1 Meas. period). The next cell down controls the period between
IEC
60870-5-103 measurements. The IEC 60870-5-103 protocol allows the IED to supply
measurements at regular intervals. The interval between measurements is controlled by this cell, and
can be set between 1 and 60 seconds.
COMMUNICATIONS
RP1 Meas. Period
30.00 s
7. If the optional fibre optic connectors are fitted, the RP1 PhysicalLink cell is visible. This cell controls
the physical media used for the communication (Copper or Fibre optic).
COMMUNICATIONS
RP1 PhysicalLink
Copper
8. The next cell down (RP1 CS103Blcking) can be used for monitor or command blocking.
COMMUNICATIONS
RP1 CS103Blcking
Disabled
9. There are three settings associated with this cell; these are:
Setting: Description:
Disabled No blocking selected.
Monitor Blocking
When the monitor blocking DDB Signal is active high, either by energising an opto input or control input,
reading of the status information and disturbance records is not permitted. When in this mode the device
returns a "Termination of general interrogation" message to the master station.
Chapter 4 - Configuration MiCOM P747
72 P747-TM-EN-1
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