Comments  

1. #16 Alexey Dovgan
   2009-11-1012:49:41 Hi Alberto.
   We have thinked about implementation of FreeSCADA on qt or wxWidget, but implementation on C++ need in a big human resources. So we decided to use C# that have a lot ready to use solutions that we using in our project. Also SCADA is not only plant level - it should be a part of global enterprise ERP system. So Windows from this point is more prefer cause it can be simpler integrated and scaled in big enterprise solutions. Also on my experience in most places where SCADA is used there are no technical personal who can administrate Linux boxes as well.
   
   Regards Alex.
2. #15 Alberto
   2009-11-0217:47:25 Very good idea to develop a Free SCADA solution.
   Just one question: have you think about develop the software based in open source platforms like UNIX? My experience in windows being used as SCADA platform was not very good… very poor availability due to windows hang ups. Congratulations again for all project developers!
3. #14 Seung Woo Lee
   2009-09-3006:22:49 I'm really happy.
   Thanks very much.
   Have a nice day!!
4. #13 Seung Woo Lee
   2009-09-3006:21:53 Thanks Michael!!
   It work very well.
5. #12 Michael
   2009-09-2617:30:17 Ok, I was able to reproduce this problem on my side. It indeed looks like to much data to pass via communication channel and there is timeout happens for this operation. I will think what could be done in this case.
6. #11 Seung Woo Lee
   2009-09-2507:21:48 Thanks for your fast reply.
   1. All Variables is working good in the "Project content variables".
   2. They exists on the Same System.(Localhost : 8080)
   In case of smaller number of variables they work good. (smaller than 290)
   but bigger than 290, The designer.exe happen "Timeout Error" when I try to connect server.
   
   Best regards.
7. #10 Michael
   2009-09-2506:38:05 Hi Lee,
   
   If you load "remote test.fs2" project in RunTime module, can you see all your variables working (double click on "variables" node in "Project content" window)?
   
   Could you also try to connect to the server from browser? Just type address from your error message in browser address string.
   
   Just to make sure, are you running Server and Client on the same system? Does this connection work in case of smaller number of variables?
8. #9 Seung Woo Lee
   2009-09-2503:14:19 HI!
   I am always thankful for your answer.
   Today I have a serious problem too.
   
   I have made the server "remote test.fs2". ("Communication->MODBUS properties->Add Station->Add Variable")
   If number of Variables 290 then a error happen in the remote server connection.
   
   Of course I have executed the "CLServer.exe".
   D:EEyesScada2Fr eeSCADA2binRele aseCLServer.exe -f="D:EEyesScada2Fr eeSCADA2_Testre mote test.fs2"
   "
   Connecting to server…
   Done
   Getting channel data…
   Error during connection to server: localhost:8080/.../
   The Request Timeover(00:01:00)
   OperationTimeou t Property Change!!.
   "
   
   Sorry for my poor english.
   Thanks Regards.
9. #8 sid
   2009-09-2309:34:01 hi any one can tell me wat is the best book on scada for start
10. #7 Michael
    2009-09-1706:13:36 Hi Peter,
    
    This place is not worse that any other to discuss interesting things. :) I don't know how to create Forum on this site, so if somebody can guide me or Alex how to create it, we would add it.
    
    For sure the document will be useful. Please send it to free-scada-developers@list s.sourceforge.net mail list and we will discuss it. Technically I think we have all infrastructure ready to implement what you are proposing except password/user protection. My preference here is to restrict access to particular schema using different sets of project files instead of introducing user management sub-system. For example you can have two project files: one for monitor a plant (see current states) and another one to control it (change some switches). In both projects you can add some embedded script (Python) which starts, stops or closes the application. You can even create a message box which asks for conformation/password for the action. The script is not so big to be created by user, but having some built-in template in FreeSCADA will for sure help with that task.
    
    In future (after we release ?Gold? version of FreeSCADA), we have a plan to implement web-based RunTime module which visualizes pages created by Designer. So a user can just type address in the browser and look at schema he needs (control or just to monitor the process).
    
    Thanks,
    Michael.