| Re: SpeedChange : Protection system reference [message #453 is a reply to message #452] |
Tue, 13 November 2012 12:15  |
Dirk Bräuer
Messages: 311
Registered: August 2008
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Senior Member |
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Dear Susanne,
> We don't try to find a solution for signals/panels in this thread. It is
> more about a reference from speed changes to its "securing" train
> protection elements never mind if there are speed panels or signals at
> all.
Thank you for clarifying this, but it was Christian who brought the
discussion on signals, not me.
>> Considering a signal, it may show different signal aspects, which
>> relate to different <speedChange> elements then.
I am not sure whether you can cancel Christians thoughts in that way. ;-)
So the question still is whether the very important differences between
speedChanges and speedAspects should be "kept" anywhere, may be in Wiki.
If I get the agreement I would write it into Wiki.
---
Concerning the reference speedChange <-> trainProtectionElement:
- I would agree with the way via a 'trainProtectionGroup'.
- I agree the direction speedChange --> trainProtectionGroup (1:n) -->
trainProtectionElement (1:n) is the more reasonable one.
- Consider our discussion on cross-references in general: May be you want
to introduce both directions from the beginning.
Dirk.
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