KnowledgeBase Results

Can I Use the NI 9505 Module To Read From an Encoder Without a Motor Connected?
I am developing a motion control application using the NI 9505 motion control module and would like to read from an encoder without a motor connected. I am certain ...
Proper Error Handling Use with the NI 9802
The error inputs and outputs are off by default on the NI 9802.  Should I use error handling with the NI 9802?
How to Compensate for Different Group Delays with C Series Modules in LabVIEW FPGA
I'm acquiring data from a NI 9215 and NI 9229 in LabVIEW FPGA.  Synchronization between channels is important to my application. When I feed the same signal into ...
Why Do I See Voltage Offsets in NI 9237 Acquisitions When Connecting Additional Strain Sensors?
While measuring strain from a channel on the NI 9237, if an additional strain sensor is inserted into an available channel on the module it may cause other channels ...
Unexpected Delay When Using DAQmx Analog Start Trigger
When I use a DAQmx analog edge start trigger with an M Series DAQ device, my program appears to last 250-300ms longer than when I do not use an analog edge start ...
Why Does My CompactRIO Controller or Single-Board RIO Not Show Up in Measurement & Automation Explorer (MAX)?
I have a CompactRIO controller or a Single-Board RIO that I am attempting to configure in Measurement & Automation Explorer (MAX), however it is not showing up under ...
Metal and Paint Materials Used in CompactRIO Components
What metal and paint materials are used to build CompactRIO components?
Can I Interface with Two CompactRIO StarFabric Controllers Using a Single PXI-8310?
The PXI-8310 that is used to interface with the cRIO-9052 StarFabric controller has two channels for communication. Can I utilize both of these channels to simultaneously ...
Is There a Size Limitation for USB Devices That Are Supported on VxWorks CompactRIO Controllers or cFP-2220 Controllers?
I would like to know if there is a size limitation on the supported USB devices for VxWorks CompactRIO (cRIO) Controllers and cFP-2220 controllers?
Advantages of the NI 9237 Over the NI 9219 in Strain Measurements
I will be using CompactDAQ or CompactRIO to acquire data from a strain gauge.  My two options for modules are the NI 9237 bridge module and the NI 9219 universal ...
How Can I Use Scan Engine and FPGA Simultaneously on a CompactRIO (Hybrid Mode)?
I want to use some of my cRIO modules in Scan Mode and some in FPGA Mode.  There is no explicit option to do this in the chassis properties.  How can I do this?
Is the NI 9481 Relay Module Normally Open or Normally Closed?
I have the NI 9481 4-Channel Relay and in the specifications it says the relay type is single pole single throw (SPST), however it does not specify if the relays ...
Why is My DMA Transfer Slower on the Secondary Ethernet Port of My cRIO-9074 Controller?
I am using a cRIO-9074 embedded controller to communicated with my PC host using direct memory access (DMA) over Ethernet.  It seems like data transfer is slower ...
What is the Correct Driver to Use With My NI 9213 Module?
What is the correct driver to use with my NI 9213 module?
Why Do VxWorks Targets Not Honor New Daylight Savings Time Rules?
In 2007, the start and end dates for Daylight Savings Time (DST) changed. Since then, my VxWorks-based controller (such as the CompactRIO (cRIO) 901x series) seems ...
NI 9219 Reads Zero Volts at 60 Hz
I am trying to read a 60 Hz signal from my NI 9219 but it is only reading zero volts.  Why is this happening?
How to Read the Internal Autozero Channel of an NI 9211 in CompactDAQ
I would like to check what the internal autozero channel is reading on my NI 9211 in CompactDAQ.  How can I accomplish this?
Why is There Skew Between Output Lines on the NI 9403?
When I view the outputs on my NI 9403, I notice there is a skew. Is this expected behavior of the module? If so, why does this skew occur?
cRIO DE-15 Issue Can Cause an FPGA to Freeze or Lock
The Front Panel of my FPGA VI locks every time I try to access one of the modules.  There are no errors reported and the only way to unlock the Front Panel is to ...
LabVIEW Runtime error in MAX when accessing a cRIO-901x with LabVIEW Real-Time 8.5 from MAX 4.2.1 or earlier
When attempting to expand the Software tab in MAX on a cRIO-901x I get several error message for my controllers that have LabVIEW Real-Time 8.5 installed. One of ...
How is it Possible to Use a Derived Clock Rate Higher than the Base Clock in LabVIEW FPGA?
I know that the Base Clock on my cRIO FPGA is 40MHz. What is happening when I create a derived clock that is higher than or a non-integer multiple of the Base Clock?
How Do I Reduce the OS and Driver Memory Footprint on My Real Time Controller?
My Real-Time controller (sbRIO, cRIO, or RT PXI device) has 64 MB of non-volatile memory and only about 21 MB of this is available for my program. The other 43 MB ...
Can I Access the Counter Output Signal with the NI 9481/9485?
The manual shows that the NI 9481/9485 modules have two counter outputs. Why am I not able to see a pulse train signal generated when I use these counter outputs?
How Can I Perform Pulse-Width Modulation with an NI-9401 Using the Scan Interface?
Is it possible to configure the NI-9401 to perform pulse width modulation (PWM) under the RIO Scan Interface?
Compact RIO Controller Support for Drive Letter Access for the 9802 Module
I am trying to mount my SD card on the RT host, but I get the following error message:Support for Drive Letter access to NI 9802 Cards from cRIO-900x Controllers ...
C Series Digital I/O Behavior on Loss of Ethernet, Wireless, or USB Connection
If my C Series Digital I/O device (NI-9401, NI-9472, NI-9481, etc.) loses connection with the host controller, what happens to the current output configuration?
Using the SMB Connector for Digital I/O or Drift Compensation on cRIO-901x and 9074 Controllers
The Operating Instructions manual for cRIO-9012/9014/9074 controllers states the following:"The software that supports GPS drift-correction and other digital I/O ...
How Does Automatic Network Configuration Work on cRIO-9073 and cRIO-9074 CompactRIO Controllers?
How do I configure the IP and other network settings of a new CompactRIO 9073 or 9074 controller?
Thermistor Measurements Using the NI 9219
Can the NI 9219 be used for thermistor measurements?  Is this a recommended configuration?
The NI 9217 and NI 9219 2-Wire RTD Support
The Operating Instructions for the NI 9217 and NI 9219 both explain how to connect and measure from a 4-Wire RTD and 3-Wire RTD. Do these modules also support 2-Wire ...

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