It is possible to disable the device output contacts to allow secondary injection testing to be performed using
either the front panel menu or the front serial port. The IEC 60870-5-103 standard interprets this as 'test mode'. An
event will be produced to indicate both entry to and exit from test mode. Spontaneous events and cyclic measured
data transmitted whilst the device is in test mode will have a COT of 'test mode'.
The disturbance records are stored in uncompressed format and can be extracted using the standard
mechanisms described in IEC 60870-5-103.
IEC 60870-5-103 only supports up to 8 records.
The device supports a facility to block messages in the monitor direction (data from the device) and also in the
command direction (data to the device). Messages can be blocked in the monitor and command directions using
one of the two following methods
The menu command RP1 CS103Blcking in the COMMUNICATIONS column
The DDB signals Monitor Blocked and Command Blocked
IEC 60870-5-103 CONFIGURATION
To configure the device:
Select the CONFIGURATION column and check that the Comms settings cell is set to Visible.
Select the COMMUNICATIONS column.
Move to the first cell down (RP1 protocol). This is a non-settable cell, which shows the chosen
communication protocol – in this case IEC 60870-5-103.
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 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.
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.
Chapter 18 - Communications