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<== Date ==> <== Thread ==>

Subject: SCA, LabVIEW, PendIO
From: "Paul Sichta" <[email protected]>
To: <[email protected]>
Date: Fri, 5 Mar 2004 14:29:12 -0500
Posting for the record. Chris already solved my problem.
-ps
=================================================


Paul,

I looked into the code for SCA and found that the amount of
time it waits
for callbacks (which translates into pend_event) is a
formula: 10ms *
number_of_pvs_in_the_group + 20ms.

You can change this behavior by setting the property
'scagroup' to false
(0). Now it should keep waiting for callbacks for 5 seconds
before giving
up.

The other thing to note is that if you set the scagroup
property to 0, you
don't have to call refreshValues anymore. Essentially,
you've 'ungrouped' the
calls which is appropriate when you only have a few PVs as
in your case.


Chris

> -----Original Message-----
> From: Paul Sichta [mailto:[email protected]]
> Sent: Wednesday, March 03, 2004 12:26 PM
> To: Chris Timossi
> Subject: SCA, LabVIEW, PendIO
>
>
> Chris,
> I am using SCA (October 2003 version) with LabVIEW 6. When
> my IOC is very busy a 'get' returns error 0x120000 (no
> callback).  For most of the clients I write (in C) that
use
> CA, I set the pend_io time at around 5 seconds.
>
> Is there a way I can configure SCA to increase the pendio
> time?  Can you tell me the 'standard' time that SCA uses?
>
>
>
>
> --
> Paul Sichta
> Princeton Plasma Physics Laboratory
> 609-243-3477       FAX 3030
>
>


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