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<== Date ==> <== Thread ==>
Subject: Re: CSS version 4.2: can't access EPICS
From: [email protected]
To: Phil Atkin <[email protected]>
Cc: [email protected]
Date: Wed, 6 Apr 2016 18:23:20 +0200
Hello Phil,

I would recommend the following:

Be sure to put the files in the correct path (a default configuration is created if not already present). It should be <CSS-InstallDir>/configuration/diirt/ (look at Edit -> Preferences -> CSS Core -> Diirt preferences)

<CSS-InstallDir>/configuration/diirt/datasources/datasources.xml:

<?xml version='1.0' encoding='UTF-8'?>
<dataSources version="1">
        <compositeDataSource defaultDataSource="ca" />
</dataSources>

That should indeed prevent you from prepending ca:// to all your PVs...

<CSS-InstallDir>/configuration/diirt/datasources/ca/ca.xml:

<?xml version='1.0' encoding='UTF-8'?>
<ca version="1">
        <jcaContext pureJava="true" addr_list="" auto_addr_list="true" connection_timeout="30.0"
                beacon_period="15.0" repeater_port="5065" server_port="5064"
                max_array_bytes="16384" />
</ca>

Replace the parameter values with the values you used in your working/old CSS installation (look under Preferences -> CSS Core -> EPICS).



Marcus




Von:        Phil Atkin <[email protected]>
An:        [email protected]
Kopie:        [email protected]
Datum:        06.04.2016 16:40
Betreff:        Re: CSS version 4.2: can't access EPICS



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, [email protected] 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 <[email protected]>
An:        [email protected]
Datum:        05.04.2016 18:24
Betreff:        CSS version 4.2: can't access EPICS
Gesendet von:        [email protected]



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
Replies:
Re: CSS version 4.2: can't access EPICS Phil Atkin
References:
CSS version 4.2: can't access EPICS Phil Atkin
Re: CSS version 4.2: can't access EPICS marcus . michalsky
Re: CSS version 4.2: can't access EPICS Phil Atkin
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