Friday, March 29, 2024
CLA
I am pleased to have successfully achieved Certified LabVIEW Architect status which is the highest-level qualification with National Instruments platform and LabVIEW programming language. I passed exam on my first attempt. I chose standard Module/API based architecture that I intend to implement in most of my labview projects. It is very neat architecture and easily scales. The architecture also helped...
DAQ
Programming using DAQ functions DAQ devices Many National instrument devices such as PXI, SCXI, PCI/PCIe, USB use NI DAQmx drivers and library functions within labview to achieve data acquisition and generation. The most common I/O is Digital Inputs, Digital Outputs, Analogue Inputs, Analogue Outputs and Counter channels. In this article, I would briefly go through some of the good practices that...
memory ram
Labview Data and Memory In this article, I will briefly go through data storage as memory bits and bytes when programmed using labview code. I particularly like labview when it comes to memory allocation and deallocation. Back in university days, I recall efforts I had to put in C programming language for memory management. Fortunately, Labview does memory management - allocation...
crio
Programming FPGA and CRIO In this article, I wanted to briefly go through few practices that I use to develop a compact rio application. A full Compact RIO controller combines FPGA with real time processor. Labview developer could utilise all target levels to develop machine app that would offer maximum resources utilization and reliability to mention only few of the...
PXI
PXI- PXI extension for Instrumentation PXI is a high performance and low-cost development for measurement and automation systems for applications such as manufacturing test, machine monitoring and and industrial testing application. PXI was introduced as an open industry standard. Today, PXI is governed by the PXI Systems Alliance (PXISA), a group of more than 70 companies chartered to promote the...
Automated-Test
Test Engineering Prior the manufactured unit is deployed for service, it has to be vigorously tested for its functionality, design, safety to name few. In test engineering, Unit Under Test UUT is required to pass validation and verification testing. Validation tests are often difficult to automate as the results are exploratory. We are often asking question if product could satisfy...
oop
Labview Object Oriented Programming Encapsulation Labview has evolved to offer classes with textual programming language capabilities of composition and inheritance. Class is like a cluster. It contains data such as boolean, numeric, arrays etc. Unlike clusters, we can't simply unbundle class and access its data. So if an app data is enclosed within class, we can rest assured it is save...
labview project
Labview Projects Since the release of labview project explorer, it has become easier now to manage labview projects. Labview project file names ends with .lvproj as apposed to .vi which is the file extension for labview 'subroutines' and .exe for executables on windows OS. Through labview projects, one can easily create new vis, libraries, controls, classes even executables and installers....
clone
Labview Reentrant and Non-reentrant vis The native ability of labview programming language to execute parallel code could be restricted if a vi called more than once on the block diagram is not set appropriately - reentrant/non-reentrant execution. By default, all vis are configured as non-reentrant execution. Reentrant vis are like multiplication or addition functions. we want to place as many functions...
crio
Compact RIO Controllers Composition of CRIO PAC Compact RIO is industrial ruggedized Programmable Automation Controller PAC that provides interface to C Series Module for I/O connectivity. Certain models carry Field Programmable Gate Array in the back plate chassis. A full Compact RIO PAC controller could be a combination of and FPGA Chassis with hot-swappable C Series modules and a  pluggable real...
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