Re: [Qscada-developers] the XML-DA protocol

[wireless <wir...@ta...>]

>>Qscada is a new encouraging project that will sure
>>help a lot.
>
> We hope it will. Spread the news and find more
> people to join us ;)
>
> GREETZ, Jovan
>
> -------------------------------------------------------------------------
> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to
share your
> opinions on IT & business topics through brief surveys - and earn cash
> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
> _______________________________________________
> Qscada-developers mailing list
> Qsc...@li...
> https://lists.sourceforge.net/lists/listinfo/qscada-developers
>

Jovan Kostovski wrote:
> Hi All,
> 
> On 11/15/06, Ivan Vavrecka <iva...@ya...> wrote:
> 
>>I am a new suscriber, not a programmer, just looking
>>for some general knowledge about these topics.
> 
> 
Hello Ivan, welcome aboard.

> It's nice to have you here. It doesn't metter if you're programmer
> or not, we need some people to remind us of some similar
> useful projects and promote usage of QScada as well. ;)


As much as possible, we should look at other project. At the very
least we can see what good ideas they have.
> 
>>...PyOPC is a framework for rapidly creating OPC
>>XML-DA compliant clients and servers....A Python
>>Framework for the OPC XML-DA 1.0 Standard...

> We are planning to use XML-RPC for  QScada so it will probably be implementation
> of OPC-XDA to conform the trends and standars in authomation control.

Got any links on this?

> Bindings means more delays :(
> We can use python for some parts of QScada that are not
> time critical, but for the OPC servers/clients I think that's
> bad idea.

> 
> As I saw in these two tutorials:
> http://www.cs.usfca.edu/~afedosov/qttut/
> http://www-128.ibm.com/developerworks/linux/library/l-qt/
> 
> PyQt is used to connect a python script to a Qt GUI.


The really neat thing about Gentoo is that both are supported:

eix pyQT
* dev-python/PyQt
     Available versions:  3.14.1-r1 3.14.1-r2 [M]3.17
     Installed:           3.14.1-r1
     Homepage:            http://www.riverbankcomputing.co.uk/pyqt/
     Description:         PyQt is a set of Python bindings for the Qt
toolkit.

* dev-python/PyQt4
     Available versions:  ~4.0 ~4.1
     Installed:           none
     Homepage:            http://www.riverbankcomputing.co.uk/pyqt/
     Description:         PyQt is a set of Python bindings for the Qt
toolkit.



> So once again I'm against using python in QScada,
> but the majority desides :)
> 

I'm an assembler/state-machine/ansi_C type, so I'm going to vote
with Jovan.

Besides I thought we had agreed on C/C++, QT, and Java?
Any other languages?

Gentoo just released  KDE 3.5.5 which includes
support for 1.4 and 1.5 with dynamic switching of JVM.
Java 1.6 will be released in December :

http://www.gentoo.org/news/en/gwn/20061016-newsletter.xml



James