KnowledgeBase Results

Showing 271-300 of 470 results
Why Can't I See My NI 9144 in MAX? digital.ni.com/public.nsf/allkb/3DF23E8522F104C88625752B00807EF4
I have connected my NI 9144 8-slot EtherCAT Slave Chassis to my cRIO, why can't I see it in Measurement & Automation Explorer (MAX)?
Error -61141 When Opening Simultaneous References from RT Controller to FPGAs Placed on Local and Remote Chassis digital.ni.com/public.nsf/allkb/EFD927652E2D09CC86257529003ABA92
I want to open an FPGA reference on my Real-Time controller to an FPGA placed on a remote CompactRIO chassis. I also want to open an FPGA reference to the FPGA on my local CompactRIO chassis. One of the ...
Can I Daisy Chain a NI cRIO-9074 with Another NI cRIO Real-Time Controller? digital.ni.com/public.nsf/allkb/2B09B862059B5502862575280045DA74
I have two CompactRIOs (one is a cRIO-9074) and I would like to access the I/O modules on the second controller from the 9074. How do I properly daisy chain a NI cRIO-9074 with another cRIO controller, ...
Can I Mount An SD Card In The NI 9802 Module In Real-Time And Also Access It In My FPGA VI? digital.ni.com/public.nsf/allkb/885220A318EB2FF38625752500796A5B
I have an NI 9802 module and I have successfully mounted it in my real-time VI for file access. Can I also access the module from my FPGA VI at the same time using standard FPGA I/O methods?
Do I Need The FPGA Module To Use The NI 9802 Module In My CompactRIO? digital.ni.com/public.nsf/allkb/DB7B427DFE160FF98625752500758589
I have an NI 9802 SD card module and would like to mount it as a drive in the CompactRIO’s Real-Time OS. Do I still need the FPGA module to achieve this?
Can I Program the FPGA on the NI 9144 EtherCAT Expansion Chassis? digital.ni.com/public.nsf/allkb/9FB521DCA1F6F6918625752400705194
I have a CompactRIO chassis with a Real-Time controller and a NI 9144 EtherCAT Chassis.  I am using the FPGA on my CompactRIO but also want to use the FPGA on the NI 9144.  Can I do this?
Why Does my NI 9233/9234 Load Cell Signal Decay? digital.ni.com/public.nsf/allkb/26A246B0BC23925286257513005D702B
Why is my load cell connected to the NI 9233/9234 returning readings that delay exponentially, even though I am applying a constant force?
Timeout Error When Installing Software on CompactRIO digital.ni.com/public.nsf/allkb/D8D4FDD4347E391C8625750E0000BF3B
When I attempt to install software on my CompactRIO, the installation begins, but ends with a timeout error. What happened, and how can I fix it?
What NI Product Can I Use for Wireless DAQ in Class I Division 2 Hazardous, Explosive Environments? digital.ni.com/public.nsf/allkb/978564FAD281A8FC8625750C0069866D
I want to acquire data wirelessly in a gaseous, explosive environment.  The DAQ device must pass Class I Division 2 or Class I Zone 2 North American hazardous locations certifications.  Which NI product ...
Why Won't My VxWorks Controller Reboot or Ping Itself? digital.ni.com/public.nsf/allkb/A41456DC5977F9CC8625750C007356AF
Why won't my VxWorks controller (such as a cRIO 9012) reboot itself with the RT Reboot Controller VI? Also, why won't my VxWorks controller detect itself on the network with the RT Ping Controller VI?
Can Switches, Hubs, or Routers Be Used With The NI 9144? digital.ni.com/public.nsf/allkb/1A19FD0369A84C09862575010018A2EE
I know the NI 9144 can be daisy chained.  Can I use a switch with my NI 9144s instead to form a star topology?
What is the Maximum Number of NI 9144 Chassis That Can Be Daisy Chained Together? digital.ni.com/public.nsf/allkb/4229B69C42629C6E86257501001616F3
I know the NI 9144 chassis can be used in a daisy chain, namely connecting multiple chassis in series through their ethernet ports.  Is there a limit to the amount that can be connected together?
How Do I Improve the Update Rate Of Multiple NI Scan Engine Channels? digital.ni.com/public.nsf/allkb/65B40DDF5DC61AD6862574FA001367B7
I added 16 NI 9205 analog input channels within a timed loop that's synchronized to the NI Scan Engine. When I set the Scan Period to 1ms, I found that every iteration of the loop finished late. How can ...
What Modules Are Onboard the Single Board RIO and How Do They Differ From C-Series Modules? digital.ni.com/public.nsf/allkb/D9605C54DDEFD06F862574F900031671
I know the sbRIO includes modules for different forms of input and output. How do these modules correlate to the different sbRIO models, and how do they differ from their c-series counterparts?
Does Upgrading LabVIEW Require Recompiling My FPGA Bitfile? digital.ni.com/public.nsf/allkb/E7D33564A30494FD862574D600813F33
I've recently upgraded my LabVIEW, LabVIEW Real-Time module, and LabVIEW FPGA module to a newer version.  Do I need to recompile my FPGA bitfile?
How to Access LabVIEW or LabWindows™/CVI Examples for Specific NI Hardware digital.ni.com/public.nsf/allkb/047849F9F950A2C7862574D300707E7F
I am using LabVIEW or LabWindows/CVI with NI hardware. Where can I find example programs that are specific to my hardware?
How Can I Connect a Quarter Bridge to an NI 9944 or NI 9945 with an NI 9237 Module on a CompactRIO System? digital.ni.com/public.nsf/allkb/C918C9BACB7716F6862574CB003F7AE8
I have physically connected a quarter bridge to either an NI 9944 or NI 9945 following the steps in KnowledgeBase 47SGM5CY: NI 9945 or NI 9944 with an NI 9237 Connection Guide. However, the reading is ...
Cabling Clearances for C Series Modules digital.ni.com/public.nsf/allkb/1C9D7DC41007B584862574C800748FAF
How much clearance do the different types of C Series module connectors require for cables and backshells?
How to Resolve Xilinx Compilation Error 91 digital.ni.com/public.nsf/allkb/67B03E5157F3B5CF862574C10076F948
I try to compile any LabVIEW FPGA code, and I always receive the following error during the compilation:   FATAL_ERROR: <name of library> - dll open of library failed due to an unknown reason. Process ...
How Can I Have My FPGA VI Run At Boot? digital.ni.com/public.nsf/allkb/BC513C2A0DC29C89862574BF0002B0B9
I would like to have my standalone FPGA code start running when I power on my device. How can I deploy my FPGA VI to an R-Series card and have it run at boot time?
CompactRIO FPGA Nodes May Return Module Communication Error 65536 Instead of Incorrect Module Error/Warning digital.ni.com/public.nsf/allkb/D9AFD1B5B2E37DDA862574BA0059FC5F
I receive the following error from a CompactRIO FPGA Node: Error 65536 occurred at an unidentified locationPossible reason(s):CompactRIO (Hex 0x10000) Unable to communicate with the module. Reinsert the ...
Why Does the Execution Speed of the NI 9425 I/O Node Vary Depending on Which Digital Lines are Used? digital.ni.com/public.nsf/allkb/A530ECB901AA40CE862574B30063D587
When using a NI 9425 digital input module in a CompactRIO system, the update/transfer time seems to vary depending on which digital lines are being used.  For example, when reading from digital lines 0 ...
What is the Absolute Accuracy for Half the Voltage Input Range? digital.ni.com/public.nsf/allkb/B9DD447D1F3A4488862574B40004A447
I would like to know the formula to determine the absolute accuracy for the half the input voltage range. For example, I would like to know the accuracy for the 0 - 10V range of the NI 9205, but only the ...
Does the NI-9205/9206 Use the Linearization Coefficients When Returning Calibrated Data in LabVIEW FPGA? digital.ni.com/public.nsf/allkb/F27E1B157F26030E862574A3006E108B
Are the Linearization Coefficients used to generate calibrated data for the NI-9205/9206 when the Calibration Mode is set to Calibrated in NI-RIO 2.4 and later?
Does the 9205 Use the Linearization Coefficients When Returning Calibrated Data in LabVIEW FPGA? digital.ni.com/public.nsf/allkb/D2ABB36F5EFBCF3C862574A3006D2DC7
Are the Linearization Coefficients used to generate calibrated data for the 9205 when the Calibration Mode is set to Calibrated in NI-RIO 2.4 and later?
What is the Input Voltage Limitation of the 9425 Module? digital.ni.com/public.nsf/allkb/E74CF0ABC9DC808E8625749E003FB4DF
On page 12 of the 9425 module specifications (linked below), I can read that the maximum input voltage is 60 VDC if using 8 channels, and 30 VDC if using 32 channels. Why does the voltage limitation depend ...
Why Does It Take So Long to Compile an FPGA VI for a CompactRIO in Hybrid Mode? digital.ni.com/public.nsf/allkb/61276465E3043C0C8625749E005CC8A1
I have a CompactRIO (cRIO) set up such that some of my modules are utilizing Scan Mode and some of my modules have custom code written in an FPGA VI.  My project looks similar to the one pictured below ...
Stop Trace and Send VI Crashes or Hangs VxWorks Target digital.ni.com/public.nsf/allkb/37A697EE0904D20086257490007EE2DC
Using the Execution Trace Toolkit, I can create the default buffer size of 250000. However when the traces write into the buffer, my VxWorks target crashes or hangs. I may receive one of the following ...
Letter of Volatility for CompactRIO Backplanes digital.ni.com/public.nsf/allkb/15E2D3BABA825AAF862574750056E882
I need official confirmation that sensitive data passing through National Instruments CompactRIO Backplanes will be erased when the device loses power.
How do I Reset the Password for My CompactRIO (cRIO)? digital.ni.com/public.nsf/allkb/FFE0CF7C2D1D13918625747300812E8C
I locked the IP configuration on my CompactRIO in Measurement & Automation Explorer and forgot the password. How do I reset it?

Search Syntax Summary

OperatorExampleActionBoolean Equivalent
" " "temperature monitoring" Requires two terms to be adjacent to each other. In this example, only documents containing the phrase "temperature monitoring" will be shown. ADJ
+ +temperature Requires this term to be present as-is, eliminating the use of synonyms. This search query can be used in conjunction with other keywords to find only documents containing the word "temperature". AND
- -monitoring Excludes results containing this term. Use this query in conjunction with other terms to find only documents not containing the word "monitoring" NOT
* monitor* Acts as a wildcard. This example will return documents containing words "monitor", "monitoring", "monitored", etc n/a

Basic Tips

  • Search is not case sensitive. Searching for LabVIEW is the same as searching for labview.
  • Keep your query short and focused, including all relevant keywords. For example, searching for labview error is much more vague than labview error 1041.
  • Usually, all punctuation and special characters are interpreted as delimiters and are ignored. See exceptions on the Syntax page. Be especially careful when using a minus sign in front of an error number, as it excludes it from the results.
  • Search for keywords you would expect to see on a page. For example, terms pxi does not work are unlikely to appear in technical documentation. The query like analog output noise will return better search results.

Advanced Tips

  • You locale settings identify your current geographical location and affect your search results. For example, if you set your country to Japan, Japanese documents will get boosted in your search results. Check your locale settings in the top right corner of the search page.