[Css-csts] directive-qualifier for the 'reset' directive (pseudo RID)

[Holger.Dreihahn at esa.int]

Hi John,
I have put this as a pseudo RID for the SFW RID disposition.

Regards,
Holger

Holger Dreihahn
European Spacecraft Operations Centre | European Space Agency | S-431
+49 6151 90 2233 | http://www.esa.int/esoc



From:   John Pietras <john.pietras at gst.com>
To:     "CCSDS_CSTSWG (css-csts at mailman.ccsds.org)" 
<css-csts at mailman.ccsds.org>, Wolfgang Hell <wo_._he at t-online.de>
Date:   30/04/2019 17:26
Subject:        [Css-csts] directive-qualifier for the 'reset' directive 
(pseudo RID)
Sent by:        "CSS-CSTS" <css-csts-bounces at mailman.ccsds.org>



The Sequence-Controlled DP procedure extends the EXECUTE-DIRECTIVE 
operation (4.8.4.4) with the ‘reset’ directive (4.8.4.4.2) and associated 
directive-qualifier (4.8.4.4.3). 
 
The current phrasing of 4.8.4.4.3.1 states “The directive-qualifier shall 
identify the next-data-id parameter value …”. Although it should be 
obvious that this is *only* true when the directive-identifier is ‘reset’, 
it doesn’t explicitly state that and could be interpreted as normatively 
requiring that the directive-qualifier have this value for *all* 
directive-identifiers.
 
Elsewhere in the SFW, where extension elements are added in (name: 
value/qualifier) pairs, the value/qualifier specification is conditional 
on the value of the “name”. I recommend that this be used here by changing 
the current wording to:
“For the ‘reset’ (directive-identifier) directive, the directive-qualifier 
shall identify the next-data-id parameter value …”.
 
I don’t know if there are other instances of such unconditional 
specifications of extension values/qualifiers, but if there are they 
should be modified in the same manner.
 
Best regards,
John_______________________________________________
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