665   DSCC: ActWSchd, ActAncSchd attribute type issue

Created: 18 Jun 2010

Status: Future Improvement

Part: Part 7-420 (2008; DER)

Links:

Page: 36

Clause: 5.2.8

Paragraph:

Category: Issue for edition 2 of this part

Issue

In DSCC, the attributes ActWSchd and ActAncSchd are of type SPC. This is a problem, because it only allows activation/deactivation of an schedule, and not selection of which specific schedule to activate.
As DSCH has been designed in such a way that it supports more identified schedules, this is clearly an error.

In the June 11 2008 revision, the attribute type was in fact INC, but this, for some reason, changed in the June 20 2008 revision.

Proposal

Change ActWSchd and ActAncSchd to INC.
It should be noted that deactivation of any currently activated schedule happens by writing a value of 0.