Section 3: Iec 60870-5-103 Definitions; Protection - Siemens 7SG11 Manual

Section 3: IEC 60870-5-103 Definitions

The following tables give information on the IEC 60870-5-103 protocol. A detailed description of all protocol
information is available in report no 434/TM/5/13 which can be accessed on the
publications section under technical reports, "communications interface manual".
Table Showing Function Type Numbers Used
Function Type
Cause of Transmission
The cause of transmission (COT) column of the 'Information Number and Function' table lists possible causes of
transmission for these frames. The following abbreviations are used:
Table Showing Permitted Cause of Transmission Numbers
Cause of Transmission (COT)
Information Number and Function
The following tables list information number and function definitions together with a description of the message
and function type and cause of transmission that can result in that message. Not all definitions are available on all
relay types – this is dependent on functionality
KEY FUN Function Type (defined in IEC60870-5-103 section 7.2.5.1)
INF Information Number (defined in IEC60870-5-103 section 7.2.5.2)
TYP ASDU Type (defined in IEC60870-5-103 sections 7.3.1 and 7.3.2)
GI Event supports General Interrogation x = supported (defined in IEC60870-5-103 section 7.2.5.2)
COM Type of command single (ON only) or double (ON/OFF) (defined in IEC60870-5-103 section 7.2.5.2)
COT Cause of Transmission (defined in IEC60870-5-103 section 7.2.3, table 5)
DIR Direction of event - Raised Only (RO), Raised/Cleared (RC) or Double Point Travelling, Cleared, Raised or
Unknown (DBI)
x Supported,
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Description
160 IEC Overcurrent Protection
164 Reyrolle Overcurrent Protection
254 IEC Generic
255 IEC Global
Description
1 Spontaneous Events
2 Cyclic
3 Reset Frame Count Bit (FCB)
4 Reset Communication Unit (CU)
5 Start Restart
6 Power On
7 Test Mode
8 Time Synchronisation
9 General Interrogation
10 Termination of General Interrogation
11 Local Operation
12 Remote Operation
20 Positive Command Acknowledge
21 Negative Command Acknowledge
31 Transmission of Disturbance Data
- Not supported.
7SG11 Argus 6 Diagrams and Parameters
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