Vernier SensorDAQ® User's Manual
Contents
1. The information below refers to the SensorDAQ files that are installed with LabVIEW version 2009 or newer Older versions of LabVIEW do not have the complete set of Express VIs Accessing the SensorDAQ Palette Vernier SensorDAQ a Search ae Data Logging DCU Control Low Level Dr As you customize an existing SensorDAQ example or even if you are building a new program from scratch you will need access to the SensorDAQ Express VIs and driver VIs These are located in the functions palette and are placed on the block diagram by clicking and dragging The functions palette is accessed in LabVIEW by selecting View Functions Palette or right clicking in the block diagram workspace If you do not immediately see the SensorDAQ palette click on the Search button at the top of the functions palette and search SensorDAQ If there are no SensorDAQ results in the search the SensorDAQ files were not properly installed 5 SensorDAQ User s Manual Analog Express This Express VI should be your starting point for learning how to program the SensorDAQ It allows you to test your hardware and build a useful LabVIEW program in a quick and clean method Simply click and drag the Analog Express VI into the block diagram The Express VI will provide a configuration window that allows you to configure all five analog inputs view and modify the calibration coefficients zero the sensor reading choose the sensor units set the data collect2. rmes Setup Hep _ 12 Double click SensorDAQ Logger vi to open it 13 Start the example by clicking Lab VIEW s white Run arrow 4 in the upper left corner Tip If LabVIEW has successfully detected the SensorDAQ you will see the device icon appear in the upper left corner see below along with the sensor reading In this example a temperature probe was connected 0 OOOO OO File Configure Channels Data Help TLA AR a Temp 25 4 C 50 48 46 14 Click the Collect button MJ LabVIEW will begin plotting data in the graph 15 Once data have been collected click and drag the mouse on the graph to highlight data Click on the various analysis buttons in the toolbar Zoom Examine Statistics Integrate Linear Fit and Curve Fit to study your data 16 Stop this VI by selecting Exit from the File menu You have now successfully set up your equipment collected data and performed analysis Keep reading for information on the hardware the LabVIEW examples and the SensorDAQ palette SensorDAQ User s Manual 4 SensorDAQ Palette The SensorDAQ is a device that is designed to be programmed using LabVIEW development software Use the SensorDAQ palette of Express VIs and driver VIs to communicate with the device and perform control and data logging Combine this with all of the power of LabVIEW to create custom programs perform data analysis generate reports post to the web and more
3. combine the use of sensors connected to the SensorDAQ with the output of Vernier s Digital Control Unit DCU or the SensorDAQ s screw terminal for control projects Examples include alarm systems and temperature controlled environments By following this guidebook you will learn to e Set up and collect data using Vernier sensors e Find sample programs e Access the SensorDAQ palette SensorDAQ Equipment List The SensorDAQ package contains the following equipment e SensorDAQ interface e CD containing SensorDAQ files e User s Manual e USB cable e Vernier Voltage Probe Quick Start Install National Instrument Software Install National Instruments LabVIEW software and device driver software l Install National Instrument s LabVIEW software If LabVIEW is already installed on your computer check the version of LabVIEW you are using If you are using a version of LabVIEW that is not LabVIEW for Education or LabVIEW Education Edition you will need to install the SensorDAQ driver NI DAQmx and reboot your computer This software is included with LabVIEW or can be downloaded for free from www ni com Connect Equipment 3 4 Connect the USB cable to SensorDAQ Attach the other end of the USB cable to any unused USB port on your computer If the NI DAQm x driver software is properly FFP installed the computer should provide a Found New Umaman Hardware message and the SensorDAQ LED next OR to
4. the USB cable port on the SensorDAQ should be S blinking Install the SensorDAQ Files e LabVIEW for Education 1 The SensorDAQ files are automatically installed with this version of LabVIEW so no action is required e LabVIEW 2009 or Education Edition 2010 2011 1 Insert the SensorDAQ CD 2 Open the LV2009 LV2010 or LV2011 folder depending on the version of LabVIEW you have installed 3 Double click on the file called Vernier4LV exe e LabVIEW 8 2 8 5 8 6 1 Insert the SensorDAQ CD SensorDAQ User s Manual 2 2 Open the LV8 2 LV8 5 LV8 6 folder 3 Open the folder inside 1 0 BIN and copy the file dtree1 10vernier dat into the LabVIEW shared directory C Program Files National Instruments Shared Example Finder 1 0 BIN 4 Open the folder inside 1 0 Products LV 8 x exbins English and copy the file VernierWin bin3 into the LabVIEW shared directory C Program Files National Instruments Shared Example Finder 1 0 Products Lab VIE W 8 x exbins English 5 Open the folder inside examples and copy the folder Vernier into the LabVIEW directory C Program Files National Instruments LabVIEW 8 x examples 6 Open the folder inside menus Categories and copy the folder Vernier SensorDAQ into the LabVIEW directory C Program Files National Instruments Lab VIEW 8 x menus Categories 7 Open the folder inside vilib and copy the folder Ver
5. AQ subVIs If the SensorDAQ LED 1s blinking but the LabVIEW examples do not detect SensorDAQ unplug SensorDAQ s USB cable reboot the computer then reinsert the USB cable to SensorDAQ There was a reported bug in NI DAQm x version 9 1 through 9 2 1 that may cause the driver to be unable to find the SensorDAQ hardware Install a newer version of NI DAQm x or install the patch found at www ni com A bug in NI DAQmx caused the rotary motion sensor to only be able to read angles in one direction This was to be fixed in version 9 3 The USB cable or the USB port of the computer may not be responding properly Try a different cable and a different port If you create a LabVIEW VI with the DAQ Assistant you must run the VI with the same SensorDAQ that was connected to the computer when you configured the DAQ Assistant Switching SensorDAQs will cause an error when you run your program Delete the DAQ Assistant and reconfigure a new DAQ Assistant or go to MAX and update the device number of the SensorDAQ SensorDAQ User s Manual 18 NOTES NOTES 19 SensorDAQ User s Manual SensorDAQ User s Manual 20
6. If the SensorDAQ LED does not blink the NI DAQmx driver may not be properly installed Try re installing the driver Reboot the computer after installing the driver If the SensorDAQ LED is blinking but the LabVIEW examples do not detect SensorDAQ you may have installed a version of NI DAQm x that is not compatible with your version of LabVIEW or your computer OS Open NI s Measurement and Automation Explorer application to determine the DAQm x version You may need to update your version of NI DAQmx from www ni com There is a problem with some high speed USB connections on computers running Windows 7 The symptom of this problem is that the LabVIEW VI or the Analog Express VI will read from an analog sensor for a few seconds and then lose communication with the sensor Stopping the VI unplugging and then reinserting the USB cable into the computer and then 17 SensorDAQ User s Manual restarting the VI will fix communication with the sensor but again for only a few seconds If you experience this problem you will have to first update to NI DAQm x version 9 4 or newer Following this you must replace a SensorDAQ file Open the folder called Win7 USB Fix on the SensorDAQ CD Locate the VI found in this folder called SensorDAQ ConfigAITask vi Use this VI to replace the VI with the same name found in the LabVIEW directory at C Program Files National Instruments LabVIEW 20X X vi lib Vernier SensorDAQ Low Level Drivers SensorD
7. Printing Table of Contents What is SensorDAQ essseeecssssceccosececooseeccooececcoseceocosececoosscceocosceeooosececoseecoosseccessseeesssee 1 SensorDAQ Equipment List esesssssssssseceecccccccccsssssssssssececcccceccccosssssssscccccceceessssssssssse 1 OVK SIAT aonapo a aE ea i 2 Sensor DAO Paletli an a a a aa 5 Sensor DAO Components ois ccssiesseradsesseceecassqaadealacieedasaacadsassavstenoseelocmesiabeateddenseceousssenese 9 Providing Power to SensorDAQ essssssssssscssssssscsccecccccccccccccccccccccccecccccccecccccccceesesesee 10 Connecting Sensors and Signal Lines sccsscssssssssssssssssssssssssssssssssssssssssees 10 VETTE ANGLO SCHSOVS aer ETA T A 10 Verner IN UA ESS OFS ad seines cctizlaiitecueatadacrieainaadinleeatucnadiioials daira R ll STEW Ord haaa aa a i eh eas han aia ne ae Nat Il SensorDAQ Example VS sce sccisiesvecsscsniccassccsevasetssdeaschsasvonsusacvavencsevedetassvavcvessueansosseens 13 NI Measurement and Automation Explorer MAX ccccsssssssscssscccccccssooees 16 IR GS OUT COS istics E E E A E E E E oasnecsrecsioeseeetvis 16 Troubleshootina secsscidescsseccececscsdsacuacseaseutsnccseusssceccndeccadesaudedssudevacccedecaaccudseceseescseaecudesece 17 What is SensorDAQ The SensorDAQ interface provides connectivity between Vernier or custom sensors and a Windows computer running LabVIEW software More than 50 Vernier sensors are available for use with the SensorDAQ You can also
8. Q and LabVIEW Learning LabVIEW Vernier has released a book called Hands On Introduction to LabVIEW with Vernier This book introduces NI LabVIEW programming through a series of hands on exercises using Vernier sensors and SensorDAQ LabQuest or LabQuest Mini Besides learning the basics of NI LabVIEW programming SensorDAQ User s Manual 16 your students will get started collecting and analyzing data This book requires LabVIEW 2009 or newer Engineering Projects with LabVIEW Vernier has released a new book called Engineering Projects with NI LabVIEW and Vernier This book contains engaging hands on projects for SensorDAQ LabQuest or LabQuest Mini It introduces engineering concepts and programming with LabVIEW An introductory knowledge of NI LabVIEW programming is assumed This book requires LabVIEW 2009 or newer SensorDAQ Specifications This guide available on the SensorDAQ CD and online describes SensorDAQ technical specifications DCU Manual The Digital Control Unit DCU gives you an easy way to use SensorDAQ s digital channel for exciting do it yourself projects Math Machines Math Machines www mathmachines net creates customized connector and control experiments for teachers using SensorDAQ National Instruments LabVIEW Support The National Instruments web site is a complete resource for LabVIEW software support Go to www ni com academic learn_labview to find resources for learning LabVIEW Troubleshooting e
9. Vernier SensorDAQ User s Manual Vernier Measure Analyze Learn Vernier Software amp Technology 13979 SW Millikan Way Beaverton Oregon 97005 2886 503 277 2299 Toll Free 888 837 6437 FAX 503 277 2440 www vernier com info vernier com Rev 10 18 11 Vernier SensorDAQ User s Manual 2011 by Vernier Software amp Technology All rights reserved You are entitled to reproduce parts of this manual for use in your educational system only No part of this manual may be used or reproduced in any other manner without written permission of Vernier Software amp Technology except in the case of brief quotations embodied in critical articles or reviews SensorDAQ Vernier and caliper design are our registered trademarks in the United States National Instruments NI ni com and LabVIEW are trademarks of National Instruments Corporation Refer to the Terms of Use section on ni com legal for more information about National Instruments trademarks For patents covering National Instruments products refer to ni com patents All other marks not owned by Vernier Software amp Technology that appear herein are the property of their respective owners who may or may not be affiliated with connected to or sponsored by us Published by Vernier Software amp Technology 13979 SW Millikan Way Beaverton Oregon 97005 2886 503 277 2299 FAX 888 837 6437 www vernier com info vernier com Third Edition Third
10. ate rate of the channel is 150 Hz software timed To connect loads to the SensorDAQ connect the positive lead of the load to the AO terminal and connect the ground lead of the load to a GND terminal Digital I O In addition to supporting Vernier digital sensors the SensorDAQ has four digital lines PO lt 0 3 gt which comprise the DIO port GND is the ground reference signal for the DIO port The default configuration of the SensorDAQ DIO ports is open collector allowing 5 V operation with an onboard 4 7 kQ pull up resistor An external user provided pull up resistor can be added to increase the source current drive up to 8 5 mA limit per line Counter Timer SensorDAQ has a counter timer that can be configured for pulse output timing input event counting or as a digital trigger SensorDAQ Example VIs The best way to get started with SensorDAQ is to open and run examples You can use the examples without modification for data logging with analysis for control to perform output to troubleshoot your hardware and as starting points for your own custom program The SensorDAQ examples are located in the LabVIEW examples Vernier directory An easy way to find the examples is to launch the LabVIEW Example finder The Example Finder is launched by selecting Find Examples from the Help menu Select Directory Structure in the upper left corner and locate the Vernier folder The examples are stored in descriptive folders Locate th
11. e folder that best 13 SensorDAQ User s Manual matches your sensor or how you plan to use the hardware For best results explore all of the example folders and open a sampling of examples Inside the folders you may find examples labeled Starter Open these examples first They are designed as a starting point for testing the hardware and learning the LabVIEW code There may also be subfolders that are labeled Advanced Low Level In general these examples will only be useful if you require a higher level of flexibility for communicating with the SensorDAQ The folders are explained below Digital Control Unit DCU The Vernier DCU connects to the DIG Channel and provides output lines that can control small electric devices This is a great device for classroom projects or discussion of sensor control In this folder you will find examples showing how to control the output lines how to control lines based on sensor readings going above or below threshold values and how to control servo and stepper motors connected to the DCU Feedback and Control The SensorDAQ screw terminal provides digital input and output analog input analog output and pulse output The examples in this folder provide examples of feedback and control using the screw terminal channels Log and Analyze Data These are examples that are great for running science and engineering type experiments in the classroom In this folder you will find examples with the featur
12. e side of the analog channels The SensorDAQ s DIG Channel also accepts a Vernier Digital Control Unit This is a small box with a short cable that uses the DIG channel to provide output up to 600 mA of current for controlling electrical devices Screw Terminal SensorDAQ screw terminal connectors can be used for input or output When used for output these connectors provide a limited current see specs below therefore in some cases you will have to provide an external power source The 5V terminal can be used as your voltage source This source can only supply 200 mA maximum Note A convenient option for running devices using digital output lines is the Vernier Digital Control Unit DCU The DCU plugs directly into the DIG channel and can supply up to 600mA of useful current to output lines In addition the Vernier Power Amplifier order code PAMP can be used with the screw terminal outputs to drive loads up to I A 11 SensorDAQ User s Manual The table below describes the signals available on the screw terminals TTTTTIT Ce A L A AE TT Screw terminal connector pinout Signal Name Reference i 11 12 AI lt 0 1 gt B SensorDAQ User s Manual Description Ground Reference point for single ended AI measurements bias current return point for differential mode measurements AO voltages digital signals at the I O connector 5 VDC supply and the 2 5 VDC reference Analog In
13. es required for collecting data and performing some type of analysis on the data including linear fit curve fit integral statistics tangent and more In addition you will find examples for creating XY graphs performing events with entry saving data to file building tables zeroing a sensor reading changing sensor units and more Inside this folder is a LabVIEW example VI called SensorDAQ Logger v1 This is an advanced example where Channels 1 3 can be used to collect data with Vernier analog sensors and the screw terminal inputs AIO and AII can be used to collect data with custom analog sensors These five analog inputs can be configured and the calibration coefficients modified Clicking on the Data Collection button configures the data collection rate length of the experiment as well as any triggering Once data have been collected there are some analysis features that can be used If you would like to analyze a small portion of the data simply click and drag your mouse to highlight the SensorDAQ User s Manual 14 region or use the Zoom tool to zoom in or zoom out Data can be stored and deleted to compare against other runs as well as saved to file Motion Detector The Vernier Motion Detector connects to the DIG Channel We have created an Express VI for the Motion Detector that can be used to create quick simple and clean LabVIEW examples If you are using the Motion Detector start by viewing the Express VI examples
14. high power consumption of some Vernier CO2 Sensors only one CO2 Sensor can be used at a time with SensorDAQ SensorDAQ User s Manual 10 Most sensors provided by Vernier are auto ID sensors When you plug an auto ID sensor into SensorDAQ the software will be able to identify it and set up the file accordingly Auto ID information includes default settings for data collection rate length of collection and calibration coefficients Most Vernier analog sensors send a raw voltage signal in the range of 0 5V on pin 6 A few send a signal in the range of 10V on Pin 1 The raw voltage signal is converted to proper units using the sensor s calibration coefficients Most Vernier sensors that plug directly into SensorDAQ without an adapter are auto ID However the SensorDAQ can read a 0 5V or 10V signal from many types of sensors To make the connection to SensorDAQ with a sensor without a BTA plug use an adapter www vernier com adapters or a bare BTA cable order code BB BTA wired to your custom sensor Vernier Digital Sensors British Telecom Digital Connector LH Pin 1 1 01 Pin 2 I O2 Pin 3 1 03 Pin 1 Pin 4 PWR 5 08V Pin 5 GND Pin 6 1 04 Examples of digital sensors are Motion Detectors Photogates and Rotary Motion Sensors One digital sensor at a time can be connected to SensorDAQ The digital channel DIG which accepts British Telecom style plugs with a left hand connector is located on the opposit
15. in this folder Physiology Sensors Vernier provides sensors such as blood pressure ekg heart rate respiration monitor and spirometer These examples are similar to the examples located in the Data Logging folder They provide the features that allow you to collect and analyze the data Of course the analysis in these examples is specific to the sensor SDAQ Analog Sensors The examples in this folder show how to read data from analog sensors The Analog Express VI is the focus of these examples because it provides a very simple quick and clean method for programming the analog sensors If you are just getting started with SensorDAQ with LabVIEW or with teaching how to program the SensorDAQ the Express VI and these examples should be the starting focus SDAQ Digital Sensors This folder contains examples for the Vernier Photogate Radiation and Rotary Motion sensors The Vernier DCU and Motion Detector are also digital sensors but have their own folder of examples that were detailed above SDAQ Pulse Output The SensorDAQ has two counters as part of the hardware One counter is available on the screw terminal and the other is hidden on the DIG Channel To access the hidden line connect the DCU to the DIG Channel line 1 of the DCU 1s the pulse output line These counters can be used to provide a pulse output or a pulse train The examples demonstrate how to do this SDAQ Screw Terminal These are examples that demonstrate a
16. ion rate length of the experiment as well as any triggering Click the Help button in the Analog Express VI s configuration window for information on how to use this Express VI to build your LabVIEW VIs Digital Express E Use this Express VI to configure data acquisition from the Vernier Motion Detector Photogate DCU and Rotary Motion Sensor connected to the DIG Channel Simply click and drag the Analog Express VI into the block diagram The Express VI will provide a configuration window that provides feedback on your hardware connections Click the Help button in the Digital Express VI s configuration window for information on how to use this Express VI to build your LabVIEW VIs Power Amp Express a Use this Express VI when using the Vernier Power Amplifier connected to the SensorDAQ Analog Output screw terminal The Power Amplifier allows you to amplify the SensorDAQ output up to 10V as well as drive loads that require up to 1 ampere of current SensorDAQ User s Manual 6 Low Level Drivers 4 lt Vernier SensorDAQ i Low Level Drivers zai hors J E ao A aie 42 eines In most cases the Express VIs the DAQ Assistant the Data Logging palette and the DCU palette provide the flexibility and power you will need for creating your custom SensorDAQ program The Low Level Driver VIs may be useful if you do require more flexibility and there are many examples in the example folder with the name Advanced Low Level
17. nalog input analog output counter counting and timing digital input and digital output from the screw terminal 15 SensorDAQ User s Manual channels You will find additional screw terminal examples in the Feedback and Control folder NI Measurement and Automation Explorer MAX If you have worked with other National Instruments hardware and LabVIEW software you may be familiar with MAX MAX is a software application that is installed with NI DAQmx device driver software This application can be used to determine if the SensorDAQ hardware and NI DAQmx software have been properly installed MAX Test Panels can also be used to test the SensorDAQ channels However only the screw terminal channels will appear in the pull down list of Channel Names The Vernier Sensor Channels will not automatically appear in the list You can manually enter the Sensor Channel names and still perform a test For a common Vernier Sensor connected to Ch 1 that reads from the 0 5 Volt sensor line the inputs are as follows Channel Name Dev1 _sensor0 _ 5V Max Input Limit 5 Volt Min Input Limit 0 Volt Input Configuration RSE For a Vernier Sensor that reads from the 10 Volt sensor line Voltage Probe and Microphone the inputs are as follows Channel Name Dev1 _ sensor0_10V Max Input Limit 10 Volt Min Input Limit 10 Volt Input Configuration RSE Resources The following manuals and resources provide detailed information about SensorDA
18. nier into the LabVIEW directory C Program Files National Instruments LabVIEW 8 x vi lib Start LabVIEW and Collect Data with SensorDAQ The following example is an advanced LabVIEW program that is very useful for testing your equipment and collecting data To find information on our many LabVIEW example programs go to the section called SensorDAQ Example VIs 6 Connect a Vernier Auto ID sensor to Ch 1 7 Start LabVIEW 8 Open the NI Example Finder by choosing Find Examples from the Help 10 11 menu Select Directory Structure in the upper left corner From the list of folders choose Vernier Open the folders SensorDAQ LabVIEW Examples Log and Analyze Data Log with Analysis and single click the SensorDAQ Logger vi to view the description of this example in the Information box 3 SensorDAQ User s Manual HI Example Finder Browse Search Submit Browse according to G Task Drectory Structure E LabVIEW Zone Viet LabVIEW Zone Ll Incude nLoom examples a nicom query mecut Hardware Aind hardare ka DLink resukts to hardware Double click an exampie to open ir D oop J math ail Math Pots IMAX a reaiure NAXT Robotics J Palette AP D pacture J portacces S proj ct a ptbypt D regestry remotepanel a reports J ScanEngine i scripinode I shared Varaibe Requirements 160 LabVIEW Examples I Lablwest Labview Examples SI Sentar DAQ LabVIEW Examples D viserver
19. omputer connection 5 Use the Tie Wrap Point to lock down and secure the device 9 SensorDAQ User s Manual ta 7 SensorDAQ side view 1 Ch 1 Ch 3 BTA British Telecom Analog channels for Vernier analog sensors The Vernier voltage probe is an analog sensor 2 Use the Mounting Slot and Panel Mount to mount SensorDAQ to an object 3 The Screw Terminal Connector is available for customized input and output The screw terminal can be removed after being wired for specific experiments Replacement terminals are available from Vernier 4 DIGBTD British Telecom Digital input output channel for Vernier digital sensors Providing Power to SensorDAQ SensorDAQ is powered by the USB cable from the computer Connecting Sensors and Signal Lines Vernier Analog Sensors Sensors can be divided into two basic types analog and digital Examples of analog sensors are Voltage Temperature Probes pH Sensors Force Sensors and Oxygen Gas Sensors Up to three analog sensors can be connected to SensorDAQ at any time The channels for the analog sensors Ch 1 Ch 3 are located on the left side The analog ports accept British Telecom style plugs with a right hand connector Pin 1 Sensor output 10V Pin 2 GND Pin 3 Vres resistance reference Pin 4 AutoIDENT used for auto ID of most Vernier sensors Pin 1 m Pin 5 Power 5VDC Pin 6 Sensor output 0 5V British Telecom Analog Connector RH Due to the
20. put Channels 0 and 1 For single ended measurements each signal is an analog input voltage channel For differential measurements AI 0 and AI 1 are the positive and negative inputs respectfully of differential analog input channel 0 Analog Output Channel 0 Supplies the voltage output of AO channel 0 from 0 5V with an output current drive value of 5 mA The maximum update rate is 150 Hz software timed Digital I O Signals You can individually configure each signal as an input or output 5 V Power Source Provides 5 V power PFI 0 This pin is configurable as either a digital trigger an event counter input pulse generation output or as a period semi period two edge separation timer Analog Input Wiring In the differential input setting connect the the positive lead of the source to the AI 0 terminal and the negative lead to the AI 1 terminal The differential input mode allows the SensorDAQ to measure a voltage difference on these terminals up to 20V or 20V in the 20V range however the maximum voltage on any one terminal cannot exceed 10 V with respect to GND In the referenced single ended input mode setting connect the positive lead of the source to either AI channel terminal AI 0 or AI 1 and the ground or negative lead to the GND terminal Analog Output Wiring The SensorDAQ has one AO channel that can generate an output from 0 5V The AO has an output current drive value of 5 mA The maximum upd
21. that show how to use this palette However these examples also add more complexity Data Logging J Vernier SensorDAQ The data logging palette of subVIs are designed for building LabVIEW programs that have the features and analysis required for classroom experimentation View the examples in the Data Logging folder to see how these driver VIs analysis VIs and Utility VIs can be used DCU Control Vernier SensorDAQ DAQm x API SAID Arn Data Acquisition DCU Control j PeT E resu Te crenf ml J DCU Control aF irs The Vernier Digital Control Unit DCU is a piece of hardware that connects to the SensorDAQ DIG Channel and provides useful current to digital output aE ao AE HEA The DAQmx device driver software will install a DAQmx API that is available in the LabVIEW programming environment This palette found in lines The DCU Control VIs allow you to easily build programs for controlling these output lines including outputs based on sensor readings and outputs required for stepper and servo motors i SensorDAQ User s Manual the Measurement I O palette provides the most flexibility and power for communication with SensorDAQ Of course it also means increased complexity For most users the SensorDAQ drivers and Express VIs provide the appropriate flexibility ease of use and power and the DAQmx API will SensorDAQ User s Manual 8 not be used or
22. viewed However if you have experience using DAQmx API or if you require the low level flexibility we have provided some examples that show how to use DAQmx API with SensorDAQ They are labeled Advanced Low Level in the example folders There are a few differences in configuring a DAQmx task for the SensorDAQ sensor channels that can be seen in the examples such as setting up the channel names of these channels DAQ Assistant The NI DAQ Assistant is an Express VI wrapper of the NI DAQmx API installed with NI DAQmx device driver software found with the DAQmx API in the Measurement I O palette The DAQ Assistant supports the screw terminal channels of SensorDAQ and is a great way to program these channels However the DAQ Assistant does not support the Sensor Channels Use the SensorDAQ Analog Express VI as an alternative Express VI for configuring the Sensor Channels SsensorDAQ Components SensorDaq features four channels to connect Vernier sensors three analog one digital as well as a screw connector providing two analog input AI channels one analog output AO channel four digital input output DIO channels and a 32 bit counter timer PFI SensorDAQ back view 1 The USB Cable Strain Relief is used to ensure a secure USB connection 2 Use the Mounting Slot and Panel Mount to mount SensorDAQ to an object 3 The LED blinks when SensorDAQ has power and is recognized by the DAQm x driver 4 The USB Port is for c
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