User Manual - Florida Gulf Coast University
Contents
1. loop Add the DAQmxBase Stop Task vi and attach the to wires as seen in figure 18 Add the PDA error handler v1 found in the vi lib file located at C Program Files National Instruments Lab VIEW 8 2 v1 lib PDA PDA Error Handler v1 18 File Edit View Project ETT Tools Window Iter Amplitude 20 40 60 Time Figure 19 DAQ for retrieving data vii As a result the source code should look as in Figure18 with corresponding front panel in Figure 19 19 Client Software to be installed on computer to host webpage Parar arara oat oat od he Se ast tat atta atta at ata ata at ata alata a Mo Error h Pj Pa Figure 20 Client Software g Setup the basic structure i Case Structure to surround the entire program Figure 20 1i Place a While loop inside the case structure Figure 20 i Add the TCP Open Connection vi found in the function palette gt gt Data Communication gt gt Protocols gt gt TCP 1 Wire the TCP Open Connection vi error out terminal yellow wire to the case structure s little question mark this will change the case structure s border to the green that you see in Figure 20 2 Wire the TCP Open Connection vi port terminal blue wire to a constant value On the VI port terminal right click gt gt create gt gt constant then type in the port number you want 3 Wire the TCP Open Connection vi connection ID terminal green wire to2. any place on the case structure 4 Wire the pink address terminal to a control On the VI address terminal pink right click gt gt Create gt gt Control iv Add the TCP Close Connection vi found in the function palette gt gt Data Communication gt gt Protocols gt gt TCP 1 Wire the TCP Close Connection v1 connection ID terminal green wire to the case structure see Figure 20 v Click the arrow at the top of the case structure Labeled No Error once the case structure turns red and the label is Error 20 1 Connect the connection ID wire straight threw the case structure to the close VI see Figure 14 Then click the arrow again to get back to figure 20 h Inside the While loop 1 Add the TCP Read vi twice as seen in figure 20 21
3. PDA Data Acquisition and Control System User Manual Patrick Bowles amp Scott Marks CDA 4170 Data Acquisition and Control Systems Janusz Zalewski Ph D Florida Gulf Coast University April 23 2009 Hardware Installation and Setup 1 Insert the CF 6004 Data Acquisition board into to top of the PDA in the compact flash slot until it is completely seated in the PDA see Figure 1 NATIONAL INSTRUMENTS NI C A 40h ipur bB fultiburection Gael Figure CF 6004 being inserted into the PDA 2 Place the PDA into the docking station referred to as the cradle see Figure 2 c Figure 2 PDA placed into the cradle 3 Plug the cradle s USB cable into the Computer and the DC power plug in the wall 4 Plug the connector cable NI SH 15 15 Shielded Cable with D sub Connector into the CF 6004 see Figure 3 Figure 3 Connector cable installed in the CF 6004 5 Connect the connector cable NI SH 15 15 Shielded Cable with D sub Connector to the NI SCB 15 Shielded Compact Connector Block DB 15 adapter see Figure 4 The Battery pack is already connected to the DB 15 adapters see Figure 4 Figure 4 Connector block connected to the battery pack Installing the Server software on the PDA 1 Connect the PDA to the computer via the docking station as in Figure 5 Docking Station USB R 9 Oo PDA with CF 6004 Card Computer Figure 5 Docking Station Connection 2 Open LabVIEW 3 Open
4. ace on the case structure iv Add the TCP Close Connection vi found in the function palette gt gt Data Communication gt gt Protocols gt gt TCP 1 Wire the TCP Close Connection v1 connection ID terminal green wire to the case structure see Figure 13 v Click the arrow at the top of the case structure Labeled No Error once the case structure turns red and the label is Error 14 1 Connect the listener ID wire straight threw the case structure to the close vi see Figure 14 Then click the arrow again to get back to figure 13 Indicator of the case state ee Error oem Figure 14 The state of the case structure in the event of an error b Query local IP Address 1 Add the IP to String vi found in the function palette gt gt Data Communication gt gt Protocols gt gt TCP inside the existing While Loop 1 Create Indicator wire the pink wire to an Indicator Right click the IP to String v1 gt gt create gt gt indicator 2 Wire aconstant Boolean to the VI for dot notation Right click the green terminal gt gt Create gt gt Constant 3 Add the String to IP vi found in the function palette gt gt Data Communication gt gt Protocols gt gt TCP 4 Wire the blue terminal of the String to IP v1 to the blue terminal of the IP toString vi Query local IP String to IP IP to String Figure 15 get local IP 15 c From this point on all code will be
5. ing the executable on the development machine requires that LabVIEW be completely shutdown 10 Open a web browser on any Internet Client computer and navigate to the URL you obtained in step 3 If you are not running the executable on your development machine replace the name of the development computer in the URL with the name of the target computer You can now view and control the LabVIEW executable remotely Running the Web Server Executable Software 1 Run the Computer Client software Click Start in windows b Click Run c Enter the following i C Documents and Settings Patrick Bowles Desktop Project builds PC_Program exe li Press enter d Ifthe Program opens with a popup as in Figure 11 the web server is not running exit program and LabVIEW LabVIEW must be completely shut down Then repeat step a The Web Server cannot stark Is the Web Server port already in use Try to start the Web Server on another port LabVIEW The specified network address is currently in use 12 Figure 11 Error pop up e Ifthe Program opens with out popup as in Figure 12 the web server has began running ar PC_Program vi File Edit Operate Tools Window Help ei 197 166 1 5 Amplitude I l Figure 12 PC Program exe 2 Open the web interface by going to this web address in the browser http Patricks PC gateway 2wire net index html As a result the browser wil
6. inside part a while loop and Case Structure Add the TCP Wait On Listener vi found in the function palette gt gt Data Communication gt gt Protocols gt gt TCP 1 li iii iV yi Wire the yellow error wire from the while loop to the TCP Wait On Listener vi error in terminal see figure 16 Wire the green listening ID terminal from the while loop to the terminal of the TCP Wait On Listener vi see figure 16 Wire the blue timeout terminal of the TCP Wait On Listener vi to a constant value 3000ms Right click TCP Wait On Listener vi blue terminal gt gt Create gt gt constant then type in the value see figure 16 Wire the pink remote address terminal to an indicator Right click the TCP Wait On Listener vi pink terminal gt gt create gt gt indicator see figure 16 Wire the listener ID out terminal to the right side of the while loop The other two terminals to deal connection ID Error out will connect to the next TCP TCP Wait On Listener S000 To TOF A TCP Aa a foe Wo Figure 16 TCP wait VI d While loop wait timer 1 il Add the Wait ms vi found in the function palette gt gt Timing Wire the delay in millisecond with a constant Right click the milliseconds to wait terminal blue gt gt create gt gt constant then enter the delay in milliseconds see figure 16 e Create another case structure and while loop comb similar t
7. k Build which creates an executable and some configuration file as illustrated in figure 10 10 Size Le 268 KB Final PC Client 3 KE E Final PC Client aliases 1 KB Figure 10 All files created 6 Copy the executable and all of the generated files to your target computer Note The target computer must have the LabVIEW Run Time Engine installed and it must match the version of LabVIEW used to develop the executable 7 On the target computer browse to the directory where you just copied your executable Open the ini file in a text editor and perform the following e Verify the token WebServer Enabled True exists If you cannot find it add it to the end of the file 8 In LabVIEW 8 x prior to LabVIEW 8 6 e Add or modify the WebServer RootPath in the ini file so that its value is set to the directory where the HTML page currently resides it should be located in the application s data directory e Save the changes to the ini file and close it In LabVIEW 8 6 and later e Close the ini file and open niwebserver conf in a text editor This file was created to handle the new functionality provided by the LabVIEW web server in LabVIEW 8 6 11 e Inthe second section labeled Directives that apply to the default server there is a DocumentRoot tag Replace the default LabVIEW www with the location of your HTML file Do not include the name of the HTML file in the path 9 Launch your executable Note Runn
8. l display the index html page and load the PC_Program exe requesting control of the program 3 Verify that the web interface that just appeared on the screen is using the correct IP address which is 192 168 1 5 4 Click Connect 5 Wait for readings to show in the graph 6 When you are finished click Disconnect and Exit 13 Building the Software 1 Server Software to be installed on the PDA a Set up the basic structure a a a o a A F a a fed ee C lel ee ae ae a Mo Error 5 Fa on Create TCP Listener z TEF Close connection PREFER a cae ea a a a at a a aoe aa aa aa a ae a aa a a a a a Pai i oie oe oe oe a oe ot oe oe oe ot oe Ge oe oe oe oe oe oe Figure 13 step one i Case Structure to surround the entire program Figure 13 11 Place a While loop inside the case structure Figure 13 ii Add the TCP Create Listener vi found in the function palette gt gt Data Communication gt gt Protocols gt gt TCP 1 Wire the TCP Create Listener vi error out terminal yellow wire to the case structure s little question mark this will change the case structure s border to the green that you see in Figure 13 2 Wire the TCP Create Listener vi port terminal blue wire to a constant value On the VI port terminal right click gt gt create gt gt constant then type in the port number you want 3 Wire the TCP Create Listener vi listener ID terminal green wire to any pl
9. o that in part a 16 a No Error Figure 17 Case while and TCP write vi 1 Will not repeat how to setup the Case structure and while loop again please refer to the beginning of this section ui Add the TCP Write vi in the while loop found in the function palette gt gt Data Communication gt gt Protocols gt gt TCP 1 Wire the connection ID green and error yellow wires to and from the write VI as seen in figure 17 2 Add the Unbundle by Name vi and connect the error wire to the input side of the Unbundle VI and the output side to a logical or connector then to the loop terminator 3 Wire the string data Pink to the Write VI this is the data that 1s collected by the data acquisition part of this project see figure 17 17 Lick ask ichannels in cn o Figure 18 Source code for the DAQ f The data Acquisition subVI has to be created in the following steps 1 il iil 1V yi DAQmxBase Start task v1 outside the while loop with the task channels in wired Right click the Start task VI gt gt create gt gt control Wire the purple Task out wire and yellow error wires to the while loop Add the DAQmxBase Read vi connect the terminal wire to the while loop junction as seen in figure 18 Wire the orange data wire to a Waveform graph VI on the project After the purple Task out wire and yellow error wires exit the while
10. o the CSPrivateLab wireless network using the following procedure of 9 Sp mh g Click Start Click Settings Click Connections Click Dell WLAN Utility Click Setting Click tab Network Adapters Click Dell Axim X50 WLAN Wireless Adapter Click Use specific IP Address and type these settings depending on the network you run it on 1 IP address 192 168 1 5 li Subnet mask 255 255 255 0 il Default gateway 192 168 1 1 Click OK twice to exit the Configure Network Adapters settings If wireless card is already enabled press twice the wireless button on the left side of the PDA to disconnect it first To enable wireless with the new configureation press twice the wireless button on the left side of the PDA Connect to the CSPrivateLab wireless network using the correct key obtained from Dr Zalewski 3 Run the PDA Server software a Click Start b Click File Explorer c Click PDA Setting up the Web Server Client Software 1 Open the LabVIEW Project Labeled PC_Project lvproj 2 From the Project Window open the LabVIEW VI Labeled PC_Program vi As a result the window shown in Figure 8 will appear The development of the Client VI is described in the build section File Edit View Project Operate Tools Window Help Lle Sn connect Or a J 2 a T Disconnect lt Figure 8 PC_Program vi 3 Build the html web page for y
11. our VI e Select Tools Web Publishing Tool from the Project explorer e Configure the Viewing Mode as either Embedded Snapshot or Monitor click the Help button for an explanation of each option and click Next as in Figure 9 13 Web Publishing Tool Select VI and viewing Options WI name PProgram MprojMy Computer PCP rg vi Viewing Mode Embedded Embeds the front panel of the YI so clients can view and control the front panel remotely Request control when connection is established Snapshot Displays a static image of the front panel in a browser test Monitor Displays a snapshot that updates continuously 15 Seconds between updates Show border Preview Tithe of Web Page Text that i going to be displayed before Text that i going to be displayed after th Preview in Browser Stark Web Server Figure 9 Web Publishing tool e Edit the Document title Header and Footer and click Next to configure the html file e Save the HTML document in your labVIEW www directory while noting the resulting URL you will need it for step 9 4 Add the HTML document from step 3 to Project Explorer by right clicking My Computer Add File 5 In the Project Explorer Build your executable by right clicking Build Specifications New A pplication Select the Source Files category Then place your top level VI under Startup VIs and your HTML file under Always Included Clic
12. the LabVIEW Project Labeled PDA_Project lvpro 4 From the Project Window open the LabVIEW VI Labeled PDA_Program vi As a result a window shown in Figure 6 will appear File Edit wiew Project Operate Tools Window Help E oo A L ai cont buffered oO Amplitude POCKET PC 2003 Device Figure 6 PDA_Program vi 5 Click the run button on the toolbar of the VI and wait for LabVIEW to finish uploading the software to the PDA it will take approximately 3 minutes If the VI does not load after that a possible error may have occuried a Possible Solutions i Verify that the cradle s USB cable is connected to the development computer ii Verify that the PDA_Program vi is not already loaded into the PDA memory using the following steps l 2 3 4 5 6 On the PDA click Start Click Settings Click on the System Tab Click Memory Click on the Running Programs Tab if the program 1s in the list select it then click Stop Click Ok amp Exit i If the first two solutions don t help completely shut down LabVIEW and restart it 6 Remove the PDA from the docking station optional Running the PDA Server Software 1 Connect the PDA to the compact connector block and battery pack as seen in Figure 7 Web Server PDA with CF 6004 Card Wireless Router Figure 7 Illustration of the Physical Connection 2 Connect the PDA t
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