964   LN Prefix length

Created: 28 Dec 2012

Status: Triage

Part: Part 7-510 (2012; Edition 1, Hydroelectric power)

Links:

Page: 16

Clause: 4.1

Paragraph: Third

Category: Issue for edition 2 of this part

Issue

The current text defines:
"In order to identify the purpose of a Logical Node with a more general name, a suffix for identification can be added. The limitation is that the sum of characters for prefix and suffix
shall not be more than 7."

IEC 61850-7-2 clause (as referenced by the TR 7-510) defines the maximum of prefix length plus suffix length as 12:

LNName = [LN-Prefix] LN class name [LN-Instance-ID]

LN-Prefix = m characters (application specific); it shall start with an alpha character

LN class name = 4 alpha characters, upper case (for example, compatible logical node name as defined in IEC 61850-7-4)

LN-Instance-ID = n numeric characters (application specific)

m+n = 12 characters

Proposal

Change current text to length = 12:

"In order to identify the purpose of a Logical Node with a more general name, a suffix for identification can be added. The limitation is that the sum of characters for prefix and suffix
shall not be more than 12."

Discussion Created Status

 

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