Re: CSS version 4.2: can't access EPICS

[Phil Atkin <phil.atkin@pixelanalytics.co.uk>]

Hi Marcus,

Thanks - that certainly allows me to get working again, having been stuck for about a day. 
Prepending "ca://" to my PV name works, although it looks as though uncommenting the following line from the default datasources.xml ought to have the same effect:
    <compositeDataSource defaultDataSource="ca" />
- as far as I can tell, it has no effect (even after a restart).

I haven't yet been able to work out whether the settings I've applied in ca.xml have any effect. 

Phil

On 06/04/2016 14:42, marcus.michalsky@ptb.de wrote:

Hello,

AFAIK CS-Studio 4.2.0 uses Diirt 3.0, changing the way how PV Access is configured.

In CS-Studio 4.1 and before you had a configuration based on Eclipse Preferences (with plugin_customization.ini).  
The new Version (Diirt) uses an XML File for Configuration. The Preferences in Eclipse now only define where to find these XML file(s).

See https://github.com/diirt/diirt/wiki/Diirt-Configuration

Your problem now is that in your old version you had defined "CA" as your default datasource, meaning all your PV Definitions got a "ca://" prefix.
The new Version does not find a configuration xml and thus there is no "default data source". So no "ca://" is added to you PV strings automatically anymore.

You can try adding "ca://" in front of one of your PV Strings. If this works you can create a diirt XML config defining CA as your default data source.


Marcus





Von:        Phil Atkin <phil.atkin@pixelanalytics.co.uk>
An:        tech-talk@aps.anl.gov
Datum:        05.04.2016 18:24
Betreff:        CSS version 4.2: can't access EPICS
Gesendet von:        tech-talk-bounces@aps.anl.gov

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I updated my CS-Studio to version 4.2.0 (I downloaded the executable).
Now I find that I can't access any EPICS PVs.  My screens show the PVs as 'disconnected', yet I can access them using caget.
Probe says that "Channel <PV name> uses default data source but one was never set"
The css_book at https://ics-web.sns.ornl.gov/kasemir/CSS/Training/css_book.pdf says ($27.3) to check that I have a plugin called org.csstudio.utility.pv.epics.  I don't, but unfortunately it doesn't tell me what I can do about that... (I _do_ have org.csstudio.platform.libs.epics).
Under Edit...Preferences...CSS Core I was hoping to find an EPICS section so that I could check my settings corresponding to EPICS_CA_ADDR_LIST etc.  Unfortunately, the entire EPICS section is missing.

Any ideas?

Phil
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Pixel Analytics is a limited company registered in England. Company number: 7747526; Registered office: 93A New Road, Haslingfield, Cambridge CB23 1LP