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measurand quantities
-
Common setting
• Transmission cycle of Measurand frame
• FUN of System function
• Test mode, etc.
CAUTION: To be effective the setting data written via the RS232C, turn off the DC supply
of the relay and turn on again.
3. 1 IEC60870-5-103 Interface
3.1.1 Spontaneous events
The events created by the relay will be sent using Function type (FUN) / Information numbers
(INF) to the IEC60870-5-103 master station.
3.1.2 General interrogation
The GI request can be used to read the status of the relay, the Function types and Information
numbers that will be returned during the GI cycle are shown in the table below.
For details, refer to the standard IEC60870-5-103 section 7.4.3.
3.1.3 Cyclic measurements
The relay will produce measured values using Type ID=3 or 9 on a cyclical basis, this can be
read from the relay using a Class 2 poll. The rate at which the relay produces new measured
values can be customized.
3.1.4 Commands
The supported commands can be customized. The relay will respond to non-supported
commands with a cause of transmission (COT) of negative acknowledgement of a command.
For details, refer to the standard IEC60870-5-103 section 7.4.4.
3.1.5 Test mode
In test mode, both spontaneous messages and polled measured values, intended for processing
in the control system, are designated by means of the CAUSE OF TRANSMISSION 'test
mode'. This means that CAUSE OF TRANSMISSION = 7 'test mode' is used for messages
normally transmitted with COT=1 (spontaneous) or COT=2 (cyclic).
For details, refer to the standard IEC60870-5-103 section 7.4.5.
3.1.6 Blocking of monitor direction
If the blocking of the monitor direction is activated in the protection equipment, all indications
and measurands are no longer transmitted.
For details, refer to the standard IEC60870-5-103 section 7.4.6.
3.2 List of Information
The followings are the default settings.
⎯ 249 ⎯
6 F 2 S 0 8 2 8
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