
df_rob
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LabVIEW Information
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Version
LabVIEW 2014
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Since
2011
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Hi James, Hope you are well! Hopefully you can answer a question I have about your Messaging Library. I'm currently using it to try and implement some TCP communications (using your TCP messenger Library.) One problem I am having is trying to make multiple unique TCP event messengers (upto n), that can be serviced by a registering processes. This means the processes need to be able to register for them at run-time. I dont suppose you have any recommendations on how to acheive this? EDIT: Looks like I was being really dumb here, I didnt notice the obs registry in the client... solution
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Using what you guys recommended I think this is now solved! Thanks a lot, I appreciate the help. It seems the flickering I was getting was also due to the chart history length being to small!
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Thanks, for the reply. It was off, but I have changed a fair bit now in response to the below posts. Thanks for the feedback, I believe I have made the recommended changes:
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Hi everyone, I'm having some problems with my waveform charts, I dont quite understand how the below code isnt working (see screenshot). It just flickers... any ideas? The intention of the code is to programatically show the last t seconds worth of data when sampling continously at 1 kHz. Where t is some value defined by the user, however in the screenshot t is a constant set to 10. Thanks for your time!
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Thanks alot James! I will try implementing the above. EDIT: I have just tried this and it works! Thanks, again. I missinterpreted the solution to jollybandits problem.
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Dont suppose anyone knows why this INSERT routine is taking so long (38 ms)? My storage loop cant get anywhere near the speed of my DAQ loop and eventually I get a buffer overflow. I believe I am using the BEGIN and COMMIT correctly, the speed of DAQ is 1 kHz so this routine is executed once per cycle. (see sattached screenshot) Thanks!
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Object Oriented Programming for DAQ and Instruments
df_rob replied to df_rob's topic in Object-Oriented Programming
Maybe the visitor pattern is the way to go here?: https://lavag.org/topic/16696-ah-yes-another-oo-architecture-question/?hl=daqmx -
Hi, Recently I have been trying to develop a set of classes for data aquisition (as the encapsulation makes other tasks easier) however I keep running into several issues (described below). I was wondering what you guys did for your OO DAQ systems. I've found a few presentations lying around on the net but their implementations do not seem to work when using DAQmx based measurements. I am trying to measure the inputs from two seperate instruments: (1) Torque Sensor (2) Encoder. Sometimes these instruments might be using a DAQmx analog input and other times a .DLL. My original thou
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Scanning a String Issue, recreating line of C code to Labview
df_rob replied to df_rob's topic in Database and File IO
Hey thanks for the feedback, that has resolved this issue! -
Hi, I’m looking to recreate this line of C code in a similar manner in LabVIEW. Any contributions are greatly appreciated, thanks. sscanf(aline, "%d%*1c%1c%1c%*1c%2c%*1c%f%f%d%f%f%*1c%5c%*1c%3c%*1c%5c%*1c%5c", &ic,c1,c2,comm,&axial,&radial,&angular,&efbhs, &holdinch,rext,amppercent,testcode,iac) below are three sample data strings that this function can read: 626 8.45 2.03 226 0.04 0.00 2 13.01 626 627 C 8.47 1.30 293 0.10 0.00 1.00 27 0 628 C 8.48 1.32 296 0.12 0.00 2.00 28 13.