viSci

Greetings All, I have a multicolumn listbox that has a user defined right click menu. I would like to be able to have the listbox selection highlite change automatically to the row that has been right clicked. I have tried everything that I can think of but cannot get this to work. Any suggestions greatly appreciated!

Would anyone venture to guess if the 'unlimited' desktop RTE includes Linux installations?

Yeah, that makes sense. But I seem to remember a very long time ago getting a quote from NI for a pack of 50 RTE's. I guess only old timers like me can remember such antiquated practices.

Is it true that the LabVIEW RTE has an unlimited license? Of course I know that some toolkits are exceptions but I seem to recall that at one time NI required at least one piece of their HW to allow unlimited use of the RTE on a target machine.

Thanks I will give that a try.

A very old DOS legacy system needs to be replaced and it uses the RS232 handshaking lines to drive a solenoid. I seem to remember that I used to have a vi that could set the DTR line directly but cannot find it. Anybody happen to have something like this in an old dusty toolbox?

I still do not understand the lv.call parameter list that you show in your example. How is lv.call referencing a particular vi, can you have more than one lv.call in a script?

In your example code I am having a hard time understanding how the LV.Call is working. Could you describe the mechanism in more detail?

Great news! Thanks for all the hard work. LUA on the cRIO? Interesting possibilities...

For large scale distributed systems, has anyone run into a limitation on the maximum number of allowable open tcpip ports on LVRT? I am imagining a system that has a large number of cRIO servers connected to a single LVRT client.

Well basically I still sell those exhibits now and then to other museums. If you are interested in Biological signal analysis you should check out NI's free Biomedical Startup kit...

Here is a jing clip of the Heartbeat Exhibit. http://screencast.com/t/owijhiujxEi

That's interesting! I designed that exhibit about 6 years ago along with a LabVIEW controlled Laser Harp which used to also be at that museum.

Maybe you can hack into this bad boy and make it work for your purposes. http://www.kshif.com/lv/ps150_85.zip

How about something like this... http://www.robotshop.com/devantec-usb-i2c-spi-serial-interface.html?utm_source=google&utm_medium=base&utm_campaign=jos

Very interesting and nice to get out of our LabVIEW microcosm for a change. Looking forward to your followup posts...

If you do not need more than 100,000 S/s and you own DSC, then you could stream to NI's very own real-time historical DB. Too bad NI does not take Citadel out the DSC closet and make it available for general use.

Just like to chime in here to give my support to any future LuaVIEW development. I have used the toolkit several times in the past 5 years and had very good results. One thing that I would like to suggest is to make it easier to purchase the toolkit. I know that CIT has been very generous in making the toolkit and LV source code available for everyone, with payment based on an honor system. At my previous employer, which was a large biomedical company and my current employer, NASA, I requested and received approval to purchase the toolkit. In both cases, the funds were allocated but it went into a purchasing black hole because the funds needed to be converted to a foreign currency and there was no way to use a credit card to complete the purchase. Perhaps also, a middle tier version of LuaVIEW could be offered in the $100-$200 range. A lot of work went into the LuaVIEW toolkit that justifies the original cost ($1000?) but I think CIT is missing the sweet spot that would open it up to more applications and get the buzz out.

Ok, I looked at some of my code and it seems that I did use the DSC BV Tag URL to register my network shared variable events. So you maybe correct that you cannot directly feed in a LV SV URL. But functionally, the BV tag URL can point to any conventional SV type. Also noticed that if I use a LV SV URL and convert it to a string then it seems to work also...

Network Shared Variables do work with DSC Value Changed Events. Your code snippet shows only single process SV's maybe that is the problem.

Maybe this might give you some ideas... http://forums.ni.com...time/m-p/392827 Also heard that cRIO CAN automatically synchronizes its timestamp with the cRIO VxWorks system Timestamp. So I guess there should be no reason why it could not be done for Pharlap based RT. "Moreover, on a CompactRIO system, the module’s timebase is corrected for drift with respect to the RT controller’s timebase, allowing the capability to correlate data with other modules in the chassis." - page 3-19 of the NI-XNET Hardware Overview Manual

Surprisingly, if you add a control like a boolean to the cluster then it becomes executable. I tried loading a reentrant vi into the subpanel(s), it runs but not as individual clones.

Actually in LV2011 you can put a subpanel in a cluster and then into an array. I am not sure if you can do anything useful with it but LV does let you do it.

Did you try to enable the Auto Adjust Scales option in the right click advanced menu?

Maybe related to this... http://forums.ni.com/t5/LabVIEW/Graph-Y-axis-creep/m-p/1691228#M600127