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Real-Time Measurement and Control | Forum profile
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Forum profile page for Real-Time Measurement and Control on http://www.ni.com.
This report page is the aggregated overview from a single forum: Real-Time Measurement and Control, located on the Message Board at http://www.ni.com.
This forum profile page summarizes the general forum statistics such as: Users Activity, Forum Activity, and Top Authors, which are reported in either a table or graph below for a given reporting time period.
Additional forum profile information for "Real-Time Measurement and Control" on the Message Board at http://www.ni.com is also shown in the following ways:
1) Latest Active Threads
2) Hot Threads for Last Week
Warning: These statistics are generated using 'best efforts' and can experience delays and reporting errors at times. Please note that such statistics do not constitute a forum's popularity and/or exact posting volumes at any given reporting period.
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Posting activity on Real-Time Measurement and Control:
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3 Months
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Threads:
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52
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150
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415
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Post:
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86
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247
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679
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Real-Time Measurement and Control Posting activity graph:
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Top authors during last week:
user's latest post:
PID (FPGA).vi Gain Scale...
Published (2009-11-12 13:09:00)
Hey Guys, Im using the PID (FPGA).vi in LV 8.5. Two questions: The T(s) sampling time parameter. I have the value set in the properties at 10 uS (100 kHz), the loop it is in runs at 160 KHz, so what rate does the VI actually use? The second is the scaling of the parameters on the Host side. I have been using the "niFPGA ScalePIDGains.vi" found in the "Using Discrete PID - R Series" example. This is fine and...
user's latest post:
UDP no longer working -...
Published (2009-11-05 12:02:00)
Yahoo! <<SOLVED>> After double checking my configuration, and sending things to the correct adresses... indeed disconnecting the 'net address' on the UDP Open removed the error and I am now streaming as I was in LV 8.5.1. Why would such a thing cripple my system? Why would there be this change between LV 8.5.1 and LV 8.6.1? I have no idea. However, this problem that has paralyzed my...
user's latest post:
Find C serial module - Real-Time...
Published (2009-11-11 16:27:00)
Hi rtini, You may have to try uninstalling all the software to make this work. Does the NI License Manager still show an FPGA license?
user's latest post:
Find C serial module - Real-Time...
Published (2009-11-10 17:37:00)
Hi Kyle, I never active FPGA module because I did buy that. When I installed NI software, I installed all from the NI LabVIEW development suite. It was evaluation period. After evaluation period expired, the problem happened. I did uninstall the FPGA module, but the problem is still there. Regards, RTINI
user's latest post:
Wie kann ich einen...
Published (2009-11-03 09:53:00)
Hab die Frequenz halbiert, war ja ganz einfach. Hab aber Probleme mit dem Schreiben in eine Datei. Das funktioniert bei mir nicht. Die Schreibfunktion ist ja im Programm schon vorgegeben, muss man da was dran einstellen bzw. ändern? MfG Tobias
user's latest post:
cRIO web server - Real-Time...
Published (2009-11-09 08:33:00)
OK, well I guess this information is worth sharing: I just got a phonecall from NI Norway, they have confirmed my problem on their cRIO 9002. I have since that tested on a 9012, and the web server works there (with a new created project). So there seems to be a general problem with the web server on the 9002 in addition to the issue that started this tread. Svein
user's latest post:
Bytes at Serial port using 9870...
Published (2009-11-12 10:42:00)
Harshil, Hybrid mode uses 2 DMA FIFOs, so unless you are using the other channel for something else in your program you should still have one available. While I am not sure what exactly is causing the only 4 bytes read, there are some obvious mistakes that I see that should be fixed. First, your open/reset/run are inside the while loop. I assume you dont want to continuously reset your FPGA, so I would move these outside the while...
user's latest post:
cRIO deployment fails -...
Published (2009-11-10 11:47:00)
Hey xkenneth, What do you mean by "RT timer blocks?" Are you using Timed Loops? Can you share your code? Kurt
user's latest post:
cRIO deployment fails -...
Published (2009-11-10 11:59:00)
The timers and counters under the real time palette. I'll upload the code asap.
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Latest active threads on Real-Time Measurement and Control::
Started 2 days, 4 hours ago (2009-11-12 13:41:00)
by George P Burde…
Ambert- Depending on the resolution and speed of the measurements you are looking for, there is a National Instruments product that will be able to handle this. As far as a transducer, National Instruments does not recommend 3rd party products. Why did you post under the Real-Time Measurement and Control board? You may find better help and more traffic from the community posting ...
Started 1 week, 1 day ago (2009-11-06 16:13:00)
by Ben S
Bones349, Hello! A few ideas/questions 1.) You could do edge detection in your FPGA thus saving you lots of processing due to not needing to pass irrelevant data up to the Host code. 2.) What are you doing by splitting numbers before converting them to dynamic data type? I'm not surw what's going on there. You could use a waveform datatype instead as it would have a time ...
Started 1 week, 1 day ago (2009-11-06 10:43:00)
by david.bolt
Dear hkhiroya This does seem simple enough.... using 2 VISA read functions, set the first VISA read resource name to the serial port you are reading from. Using the second VISA read function wire the return count from the first VI to the byte count of the second VI. This will read the byte count from the serial port and then send this data to the read function of the second. Use a ...
Started 2 days, 17 hours ago (2009-11-12 00:22:00)
by Adnan Z
What kind of error are you getting? Also, is it possible for you to post a project with all the VIs that highlights this issue. What version of LabVIEW are you using?
Started 3 days ago (2009-11-11 17:15:00)
by Ruhmann
You certainly can't do what you were trying there. You will need at least two VIs for this application. You will need a VI running under the FPGA target that can read and write the purple nodes (FPGA IO nodes). You will need a VI running under the RT controller that can read and write the variables, like the yellow node in your picture. To talk between the two VIs, use the FPGA ...
Started 5 days, 3 hours ago (2009-11-09 14:21:00)
by Smootastic
Hi rtini, You probably have a VI running on the cRIO that may be blocking you. In that dialog window, you should be able to continue anyways and stop any running programs (i.e. hit OK and it will redeploy settings and disconnect running VIs). You can also try restarting the cRIO and seeing if that helps; it should stop running programs. Did you build a startup executable? If ...
Started 3 days, 22 hours ago (2009-11-10 19:16:00)
by Will S.
Hi Joe, Please be more specific. What are you not allowing third party access to?
Started 4 days, 4 hours ago (2009-11-10 13:29:00)
by reddog
It depends on what you mean by a closed loop. Since you mentioned a control application, I'm guessing you want to perform point by point control and are attracted to the 4461 since it has 24 bit inputs and outputs. If this is the case, the 4461 isn't ideal since it was designed to acquire dynamic signals. It has very good dynamic range and THD characteristics, but it doesn't have ...
Started 2 months, 3 weeks ago (2009-08-24 11:02:00)
by Hueter
What version of NI RIO do you have installed? You need to make sure that you have NI RIO 3.2.1 . installed on both the development system and the cRIO itself for LabVIEW 2009
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Hot threads for last week on Real-Time Measurement and Control::
Started 5 days, 3 hours ago (2009-11-09 14:21:00)
by Smootastic
Hi rtini, You probably have a VI running on the cRIO that may be blocking you. In that dialog window, you should be able to continue anyways and stop any running programs (i.e. hit OK and it will redeploy settings and disconnect running VIs). You can also try restarting the cRIO and seeing if that helps; it should stop running programs. Did you build a startup executable? If ...
Started 1 week, 1 day ago (2009-11-06 10:43:00)
by david.bolt
Dear hkhiroya This does seem simple enough.... using 2 VISA read functions, set the first VISA read resource name to the serial port you are reading from. Using the second VISA read function wire the return count from the first VI to the byte count of the second VI. This will read the byte count from the serial port and then send this data to the read function of the second. Use a ...
Started 2 months, 2 weeks ago (2009-08-27 09:57:00)
by ajangot
Hi, Make sure that you don't forget to deploy the
build application by right clicking the build specifications and
clicking 'deploy'. Also make sure you set it as a setup. Make sure that
when you reboot the cRIO, the VI is running automatically. Also make
sure your windows firewall is disabled. If you follow the guide you
referred to step by step, everything should be fine and you ...
Started 2 months, 3 weeks ago (2009-08-24 11:02:00)
by Hueter
What version of NI RIO do you have installed? You need to make sure that you have NI RIO 3.2.1 . installed on both the development system and the cRIO itself for LabVIEW 2009
Started 6 days, 2 hours ago (2009-11-08 15:40:00)
by speleato
Hello wnasheim, You will need to install NI-RIO to use your controller. You can get the latest version here. http://joule.ni.com/nidu/cds/view/p/id/1386/lang/e n Sebastian
Started 5 days, 6 hours ago (2009-11-09 11:34:00)
by Ujjval
Hi, Please provide the following details so that the problem can be narrowed down. Did you change anything before which you started getting this error? Is this error consistent or is it that you get this error only sometimes; in other words what is the nature of the error? Does this error occur when you are trying to program your FPGA after compilation or it occurs when the ...
Started 1 week, 1 day ago (2009-11-06 16:13:00)
by Ben S
Bones349, Hello! A few ideas/questions 1.) You could do edge detection in your FPGA thus saving you lots of processing due to not needing to pass irrelevant data up to the Host code. 2.) What are you doing by splitting numbers before converting them to dynamic data type? I'm not surw what's going on there. You could use a waveform datatype instead as it would have a time ...
Started 2 days, 17 hours ago (2009-11-12 00:22:00)
by Adnan Z
What kind of error are you getting? Also, is it possible for you to post a project with all the VIs that highlights this issue. What version of LabVIEW are you using?
Started 3 days, 22 hours ago (2009-11-10 19:16:00)
by Will S.
Hi Joe, Please be more specific. What are you not allowing third party access to?
Started 1 week, 1 day ago (2009-11-06 11:22:00)
by BCho
Hey styl@n, There are some IMAQ functions that could be used on the CRIO as a part of the FIRST competition. However, using IMAQ Vision functions on a sbRIO or the CRIO is not something that is supported and would not be recommended. If you are looking for embeded solutions that will work with IMAQ Vision functions, I would have to suggest the Compact Vision System , NI Smart ...
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