P12x/EN CT/A96
Communications
IIEC 60870-5-103
Page 4/248
MiCOM P120/P121/P122/P123
1.4
Spontaneous events
The events created by the relay will be passed using the standard function type/information
numbers to the IEC60870-5-103 master station. Private codes are not used, thus any events
that cannot be passed using the standardised messages will not be sent.
Events are categorised using the following information:
•
Common Address
•
Function Type
•
Information number
APPENDIX 1 contains a complete listing of all events produced by the relay. The common
address is used to differentiate in circumstances where the relay produces more events of a
certain type than can be passed using the standardised messages. For example if the relay
produces starts and trips for three stages of overcurrent only two stages can be passed
using the standardised messages.
Using the different common address for two of the overcurrent stages allows each stage to
be indicated. The table in APPENDIX 1 shows the common address as an offset value. The
common address offset will be added to the station address in order to pass these events.
1.5 General
interrogation
The GI request can be used to read the status of the relay, the function numbers, information
numbers and common address offsets that will be returned during the GI cycle are indicated
in APPENDIX 1.
1.6 Cyclic
measurements
The relay will produce measured values using ASDU 9 on a cyclical basis, this can be read
from the relay using a Class 2 poll (note ADSU 3 is not used).
It should be noted that the measurands transmitted by the relay are sent as a proportion of
either 1.2 or 2.4 times the rated value of the analogue value. The selection of either 1.2 or
2.4 for a particular value is indicated in APPENDIX 1.
1.7 Commands
A list of the supported commands is contained in APPENDIX 1. The relay will respond to
other commands with an ASDU 1, with a cause of transmission (COT) of negative
acknowledgement of a command.
1.8
Disturbance records (P120, P122 & P123 only)
The disturbance records stored by the relay cannot be extracted using the mechanism
defined in the IEC60870-5-103 standard. The relay maintains compatibility with the VDEW
control system by transmitting an ASDU 23 with no disturbance records at the start of every
GI cycle.
1.9
Blocking of monitor direction
The relay does not support a facility to block messages in the Monitor direction.IEC 60870-5-
103 DATABASES
Summary of Contents for MiCom P120
Page 1: ...MiCOM P120 P121 P122 P123 Overcurrent Relays Version 11 Technical Guide P12X EN T A96...
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Page 4: ...P12x EN T A96 Technical Guide Contents Page 2 2 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 13: ...Introduction P12x EN IT A96 MiCOM P120 P121 P122 P123 INTRODUCTION...
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Page 16: ...P12x EN IT A96 Introduction Page 2 8 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 22: ...P12x EN IT A96 Introduction Page 8 8 MiCOM P120 P121 P122 P123 BLANK PAGE...
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Page 35: ...User Guide P12x EN FT A96 MiCOM P120 P121 P122 P123 USER GUIDE...
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Page 108: ...P12x EN FT A96 User Guide Page 72 72 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 109: ...Menu Content Tables P12x EN HI A96 MiCOM P120 P121 P122 P123 MENU CONTENT TABLES...
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Page 112: ...P12x EN HI A96 Menu Content Tables Page 2 68 MiCOM P120 P121 P122 P123 BLANK PAGE...
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Page 221: ...Application Guide P12x EN AP A96 MiCOM P120 P121 P122 P123 APPLICATION GUIDE...
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Page 370: ...P12x EN CT A96 Communications COURIER DATABASE Page 2 248 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 514: ...P12x EN CT A96 Communications COURIER DATABASE Page 146 248 MiCOM P120 P121 P122 P123...
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Page 536: ...P12x EN CT A96 Communications IEC 60870 5 103 Page 20 248 MiCOM P120 P121 P122 P123...
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Page 540: ...P12x EN CT A96 Communications DNP 3 0 Database Page 2 248 MiCOM P120 P121 P122 P123 BLANK PAGE...
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Page 573: ...Connection Diagrams P12x EN CO A96 MiCOM P120 P121 P122 P123 CONNECTION DIAGRAMS...
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Page 582: ...P12x EN RS A96 Commissioning Test Record Sheets Page 2 60 MiCOM P120 P121 P122 P123 BLANK PAGE...
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