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Communication interface in the IEC 60870-5-103 standard
11.5.5
Spontaneous events
(i)
When events are generated in the IED, they are transferred to the master station. The event
transferred is grouped into the Function-type (FUN) and the Information numbers (INF).
General interrogation
(ii)
"GI request" is used when it is required to read the IED status, the Function-types (FUNs),
and the Information numbers (INFs). The status and others are reported during the GI cycle.
Cyclic measurements
(iii)
Measured values are cyclically generated using Type ID=3 or 9; they are read in the IED using
a Class 2 poll. The generating rate of new measured values is possible to program.
Commands
(iv)
The user can customize the supported commands. The IED can replay for unsupported
commands using the cause of transmission (COT) negative acknowledgement of a command.
Test mode
(v)
For the process in the control system, both spontaneous messages and polled measured values
are designated by the means in the 'test mode' of "CAUSE OF TRANSMISSION". The means
denoted the 'test mode' of "CAUSE OF TRANSMISSION = 7" is normally used for the messages
transmitted with COT=1 (spontaneous) or COT=2 (cyclic).
Blocking of monitor direction
(vi)
If blocking the monitor direction is activated in the protection equipment, all indications and
measurands are never transmitted.
Note: With regard to the GI list, see
1
1118). When the user wishes to understand the details, refer to the section 7.4.3 of
the IEC 60870-5-103 standard.
Note: For details, refer to the section 7.4.4 of the IEC 60870-5-103 standard.
2
Note: For details, refer to the section 7.4.5 of the IEC 60870-5-103 standard.
3
Note: For details, refer to the section 7.4.6 of the IEC 60870-5-103 standard.
4
1
2
3
Appendix IEC 60870-5-103 interoperability
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4
6F2T0207 (0.01)
(→page
GRE200 (5,6)
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