I believe the application in question was using waveform records, which cannot be fed into a calc record. They needed to switch the input link of the waveform record.
Mark
________________________________
From: [email protected] on behalf of Maren Purves
Sent: Thu 5/8/2008 2:31 PM
To: Tim Mooney
Cc: [email protected]
Subject: Re: Change input links run-time in a db
Ulrik, Tim,
my first reaction was: why do you want to do this
anyway?
Can't you just feed both channels, and a "switch",
into a calc record or some such and switch values?
Is there a good reason to actually switch the input
_channel_ rather than just the value?
Aloha,
Maren
Tim Mooney wrote:
> Dear folks, Changing links at runtime has to be done via Channel Access.
> This is documented in the App Dev Guide (15.5 Runtime Link Modification).
> The reason isn't documented there (or at least I haven't found it) but
> anyway it's because lock sets have to be recalculated, and you can't
> do that while you're running under the protection of a lock set that's
> going to be recalculated.
>
- Replies:
- RE: Change input links run-time in a db Pedersen, UK (Ulrik)
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- Change input links run-time in a db Pedersen, UK (Ulrik)
- Re: Change input links run-time in a db Luedeke Andreas
- RE: Change input links run-time in a db Pedersen, UK (Ulrik)
- Re: Change input links run-time in a db Tim Mooney
- Re: Change input links run-time in a db Maren Purves
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