06-14-2010 08:47 AM
Joe,
Thank you very much for the suggestions! I am looking into the feasibility of implementing them right now! I'll get back to you if I have any addition questions. Again thank you, - Regards, John
06-14-2010 05:48 PM
Hi Joe,
I'm reading:
http://www.ni.com/support/cvi/serlprog.htm
We don't have LabWindows/CVI but could we perform the simulation using a GPIB Serial Poll vi or other?
06-14-2010 06:15 PM
Hi John,
I am sorry, but I am bit lost what is it that you are trying to do with the GPIB/Serial. Are you wanting to move the heartbeat over to this?
06-15-2010 09:22 AM
Hi Joe,
No, sorry for the confusion. I'm thinking if I can detect a break in the line - that alone could signal the host and therefore the operator that something has occurred. I'm currently looking at the Detect Break Event.vi in the example folder. http://zone.ni.com/devzone/cda/epd/p/id/2676
Regards - John
06-15-2010 05:52 PM
06-16-2010 01:05 PM
Hi John,
I would look at some heart beat methods using shared variables or the sdr library.
You can impletement one by have a shared variable increment every x ms. You would just have to check that the shared variable from the previous interation and compare, but remember that you will have to account for roll over.
Here are a few links:
http://decibel.ni.com/content/docs/DOC-2078
http://decibel.ni.com/content/docs/DOC-8765
Please let me know how this work for you
06-16-2010 03:56 PM
Hi Joe,
Actually, can't I treat the laptop as a 'server' and the cRIO as 'client'? That way when my 'client' is disconnected from the network my 'server' should be able to tell me right? 🙂 I am studying the data client and server examples right now.
06-17-2010 02:04 PM
Hi John,
You are on the right track. You can really abstract it as the cRIO being a client and the PC being the server.
Hope this helps.
06-18-2010 11:16 AM
Thank you Joe,
I found a thread that should help us. - Regards, John
06-18-2010 04:41 PM
Hi Joe,
It's me again! 🙂 Is there any chance of getting the linked zip files in my last posting to run w/o a fieldpoint controller? Just asking. John