C# How can a counter pulse sync with an analog stair-step output
Hi, Now I'm using NI PCIe-6251 and BNC-2110.I generated a stair-step signal and output it from analog output port AO1. I want to make counter pulse signal which sync with the each step of the...
View ArticleStart trigger - weird issue with multiple channels in task
Hi - having a bit of a strange problem. I have some code that watches the signal on AI0 and start-triggers on that; it uses the measured frequency of that signal to record a single period of data on...
View ArticleHow do I find the BdIndx (for use in ibdev) for a named board (e.g. 'GPIB0')?
I have several NI GPIB-ENET/100 devices in equipment racks each acting as 'Hubs' for one or more GPIB-controlled instruments.Each of these Hubs is configured in NiMax under the usual naming scheme,...
View ArticleHow to pass a openCV Mat from C/C++ DLL to Labview
Full Question: What is the best way to handle a openCV Mat given in a C/C++ DLL to use the data in Labview?Problem: A C/C++ DLL is given where i have a global Mat which contains data....
View ArticleEEPROM ---- How to Read Back
Here is the code that MSP430f47197 includes in its code as follows for READ/WRITE Functions. Write:int iicEEPROM_write(uint16_t addr, void *dat, int len) { int i; int j; int section_len; uint8_t *p;...
View ArticleRead analog output's last value after DAQmxStopTask
Hello everyone.I'm a physics engineer graduating and I've been trying to develop a software to output an analog signal that will be amplified and applied to a piezoelectric element to perform...
View ArticleDatasocket does not read 10th channel from CFP DI 301
We are using InstallEventHandler to read the value from cfp DI 301.Its working for channels 0 to 9.But it does not read values from channels 10 to 15. Datasocket always returns 0, even if the value is 1.
View ArticleRead and export from excel
Hi All Can someone please assist me in this regard: I have a VI that continuosly measure and log data from two frequencies, frequecy A and frequncy B interchangeably and then save the logged data in...
View ArticleMeasurement Studio Visual C++2008 in cRIO
Hi, I try to install NI-RIO drivers but I can't because I don't have installed Measurement Studio Visual C++2008, and I don't find this drivers and I don't know where I can found.Can someone help me?...
View ArticleNIScope error 0xBFFA002E when executable in on a network drive
The setup :-NI-PXI 5142-Windows 7-VisualC++ Express 2008 I get error 0xBFFA002E (initialization failed in driver dll) from niScope_init(), but only if the executable is on a network drive.If I copy the...
View Articleis there a devicenet PCI Card Labview example in common for any devicenet PCI...
Dear all,I am trying to program a devicenet Communication protocol and GUI, having CIFX 50-DN Devicenet PCI card as a master device interface.It is to use labview platform(National Instrument...
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barcode vision 2015
hi all i have a problem for coding to read 1D barcode.the visual studio error is: error LNK2019: 无法解析的外部符号 __imp__imaqReadBarcode2@28，该符号在函数 "protected: virtual int __thiscall...
View Articleswitch on/off port
please help me to on/off port fot ni6516for example consider port (p 6.0)
View ArticleHow to stop this ao task and writer?
When I close the application, the hardware is still output Voltage 'val' .How to stop this ao task and writer?Code as follows：//////////////////////try{CNiDAQmxTask...
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USB-8451 I2C interface for MPU 9250-9150-6050 IMU
Hi there, I'm using the USB-8451 for reading data from a MPU 9250/9150/6050 IMU (mostly the same ). The chip allows a I2C protocol for this task. I usually write my code in C, sometimes CVI but in...
View ArticleMalloc in c-code on RT
Hi! I run some c-code on my cDAQ and using eclipse to compile it. However i would like to use the function malloc in the c-code but I get some error when compiling.#include <stdio.h> #include...
View Articleuse of Select Signal ND_PFI_2, Convert when pin is disconnected 6030E series
I am converting Traditional NiDaq code to DaqMX. This is not my original code and the original programmer is no longer around.The following code is used without any wiring connected to pin 43 on 6030E...
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How to use data socket to get OPC server data from windows network
Hi~~ I can use data socket function to get OPC server data from my local computer in visual studio, like the picture And now i have the other computer , computer name NTC02,workgroup is SOLAR I also...
View ArticleDAQmxWriteAnalogF64 slow in communication
Hello, I'm using a USB cDAQ-9174 chassis with 9263 4xOutput module and a 9215 4xInput module. I'd like to implement a PID control loop with input ai0 and output ao0. To do that I need to know how fast...
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