1178   TABLE 84 Specifies incorrect Select Positive Result value

Created: 18 Oct 2013

Status: In Force (green)

Part: Part 8-1 (2011; Edition 2)


Page: 100

Clause: 20.5.1

Paragraph: Table 84

Category: Issue may impact interoperability of implementations of Edition 2


The Constraint <CO_CtrlObjectRef>$SBO appears to conflict with IEC 61850-7-2 which specifies the return of the controllable object.


Change Data=<CO_CtrlObjectRef>$SBO to Data=<CO_CtrlObjectRef>$Oper

Discussion Created Status
15 Apr 14 In Force (green)
05 Mar 14 Ballot Period
believe that the response to Select.response+ should be the <CO_CtrlObjectRef> to which the SBO applies. However, for backward compatibility we should allow the any . as well.

I think we should state a preference to return <CO_CtrlObjectRef>. so that future implementation are given the proper guidance.

05 Mar 14 Discussion (red)
Actually, Ed1 of IEC 61850 stated:
Select.response+ "that contains a non-NULL value for the SBO attribute"
Select.response- "that contains a NULL value for the SBO attribute".
I would suggest therewith not to specify if
<CO_CtrlObjectRef>$SBO, or <CO_CtrlObjectRef>$Oper, or <CO_CtrlObjectRef>.
Because the criteria real should remain non-NULL vs NULL value to ensure the backward compatibility of the system. The value of the string (Oper, SBO, or without) would not help.
20 Jan 14 Discussion (red)
7-2 states:
in our case ControlObjectReference if the <CO_CtrlObjectRef> and not the <CO_CtrlObjectRef>$Oper
It is not <CO_CtrlObjectRef>$SBO neither.
A compromise could be to change to Data=<CO_CtrlObjectRef>
05 Dec 13 Discussion (red)


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