1673   Configuration interoperability with IEC 61850-9-2 LE subscribers

Created: 17 Feb 2020

Status: Future Improvement

Part: Part 6 (2019; Edition 2.1)


Page: 103

Clause: 9.3.11

Paragraph: Table 29


Ed2 has introduced for SampledValueControl the property smpMod. The interpretation of smpMod is necessary to understand the content of smpRate.
Using smpMod != sample per period leads to interoperability problems with IEC 61850-9-2 LE subscribers, that only know the sample rate attribute and not the sample mod.


SampledValueControl block shall be configured with smpMod = smaplePerPeriod when configuring SampledValueControl subscribed by IEC 61850-9-2 LE subscribers.

Additionally, new serviceCapabilities shall be introduce to indicate what the supported MU variant supported by IEC 61869-9 subcribers.

Discussion Created Status
Approve 11 Oct 22 Future Improvement
The backward compatibility is already mandated by the 61869-9 product standard. Engineering may be improved, optionally by adding supported MU variant, but this is not a matter of interoperability and needs more thinking.

Move this tissue as a future requirement, according to an agreement of experts
04 Oct 22 Approval (Future Improvement)
IEC 61869-9 is requiring merging units to be able to send IEC 61850-9-2 LE compliant frames.

Is this tissue still relevant for IEC 61850-6?
23 Sep 21 Discussion (red)
a clear definition of compatibility rules have to be added related to new capabilities 02 Mar 20 Accepted


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