1726   Enumeration ClockSyncKind of LTMS.TmSyn is not correct

Created: 21 Oct 2020

Status: In Force (green)

Part: Part 7-4 (2020; Edition 2.1)

Links: #974 Clock Master TmSyn , #686 New annex H - enums types in XML

Page: 433 in CSV

Clause: 7.2.11

Paragraph: Table 219


The enumeration ClockSyncKind in amd2.1 is not backward compatible with the definition in ed.2.0. Removal of an enum value and change a semantic of an enumerated value are forbidden cases acc. part 7-1.


Correct the enumeration list in part 7-4 and in the NSD file.

Discussion Created Status
6 months over 30 Nov 22 In Force (green)
See IEC document 57/2445/INF . 01 Feb 22 Must Implement
New state: Must implement. 01 Feb 22 Must Implement
Solution is accepted. 02 Aug 21 Solution Accepted
Starting ballot period 30 Jun 21 Ballot Period
No change to test procedures needed except reference to new NSD file during batching process 30 Jun 21 Conformance Test Verification
Next step is to prepare/change conformance tests if necessary. 07 Jun 21 Conformance Test Preparation
UC15: modification of enumeration literals (1-2-3 to 0-1-2, to be aligned with part 9-2 messages).
Conclusion: no compatibility issues! Backwards compatibility: achievable.
04 Jun 21 Analysis Of Compatibility
Change status 13 Apr 21 Verify Draft Implementation
Agreed proposal as in ClockSyncKind_for 2007A4 and 2007B4.txt.
We go to next stage (Drafting implementation).
01 Dec 20 Drafting Implementation
Agree with proposal to modify 61850-7-4 to align with 61850-9-2 29 Nov 20 Discussion (red)
Edition2 (2007A3) enum list is not consistent with part9-2 and original annex H of part 7-4 (:2010), because for value=0 the semantic was "not synchronized internal clock".

Therefore my proposal for future 2007B4 in attachment ClockSyncKind.txt.

22 Oct 20 Discussion (red)


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