Field point VI

I would like more information in the right method for programming the Field point.For example if i have a big application with more VI call the tag,The open FP is for all VI or just in VI?.If exist a detailled documentation for programming Labview application in Field point VI.
Nicola
Bytelabs.it

Thank's Andre but i have more ask detail.
If i have a main Vi witch open Field point, after i open from this VI another VI dinamically (VI SERVER with player) this second VI have also an open VI and close VI after the closure of this(If i don't open the FP the VI don't run correctly).
It's this the right method.I have need more information of Field point VI in VI SERVER METHOD.Thank's Nicola
Bytelabs.it

Similar Messages

How can I get all the options of Field Point Explorer 3.0.2 in Measurement and Automation Explorer 3.1?

I am a student using LabVIEW and Compact Field Point to implement a
senior design project in Electrical and Computer Engineering. We
have LabVIEW 7.1 and a cFP-2020 and additional modules. We are
trying to use the CTR-500 module to output a pulse train to drive a
stepper motor. We have found instructions online of how to do
this, but they all use Field Point Explorer. The instructions
make use of options in Field Point Explorer that are not included in
Measurement and Automation Explorer (the software included with the
cFP).
I have downloaded Field Point Explorer 3.0.2 and followed the
directions. Now, in LabVIEW, when I using the newly created .iak
file, I get a dialogue asking to find the SubVI: 'FP Read (Float Array
-IO).vi'. Included with LabVIEW are subvis for FP Read, but not
with the float array part. So I figure I cannot use Field Point
Explorer created .iaks with LabVIEW 7.1. So how cannot I access
the same options in Measurement and Automation that I was able to find
in Field Point Explorer?
Thanks

Hi,
FieldPoint Explorer is no longer used to configure FieldPoint systems. However, I do not think that the configuring your system in FieldPoint Explorer is causing the error.
FieldPoint systems are now setup in Measurement and Automation Explorer (MAX). Information on setting up FieldPoint systems in MAX can be found in the MAX help under: Installed Products>> FieldPoint. Also, I recommend upgrading to the latest FieldPoint driver and version of MAX. The FieldPoint VI's will be slightly different when you upgrade, so there is a good chance that this will eliminate the error.
Regards,
Hal L.

The field point 4.1 software does not get installed, how to install the software and work on field point 20xx

We want to know the basics of installation of field point s/w and where to start from after installation.
Then we also need the details of HOW TO WORK in it. what are the other hardware and software that are necessarily to be installed along with field point in the PC. How to connect the hardware fp2000, to the PC.
Actually we tried installing the field point s/w, but we did not get the field point explorer icon to continue working.

Hi.
You can find informations in the NI Developer Zone (Distributed I/O -Fieldpoint)
http://zone.ni.com/devzone/devzone.nsf/webcategories/67EFA8729F4A7741862567E1006EDA74
and here for the Basics:http://zone.ni.com/devzone/conceptd.nsf/webmain/2124F6BBD29663D886256CB80054DBD7
Configure your fieldpoint in MAX.

Hello, I have created a distribution kit for my program.The problem is that the when the program is installed onto another computer, it fails to communicate with field point (Using FP-AO-200 and FP-AO-1000). Help is greatly appreciated, Thanks faen9901

Hi Everyone,
I have a program that sends information(analog output) to lab windows cvi in the form of a text file or user input.
The program runs on the computers that I have the field point explorer and lab windows cvi installed on. In order to run the program without always installing labwindows/cvi and field point; I wanted to create an executable file that could be load on another computer.
I used the create distribution kit part of labwindows/cvi to do this.After creating the distribution kit, I then installed it
to another computer.
My user interface appears on the screen, when the user clicks on the exe. file, but no data is sent to the field point module. I know that the data is being read from the user and textfile because in it appears in the uir.
The following are some details about the problem:
1. On another computer without labwindows/cvi and field point explorer not installed - no data is sent to field point module
I know this because a current is being read on the current meter connected to field point module.
My questions are the following:
1. What are the possible reasons for the data not being sent to the field point module?
2. Do I still need to create an iak. (Installing Field point Explorer) file stored on any new computer that I install my created distribution kit file too?
Thankyou very much for any help that you can provide. I greatly appreciate it.
Faen9901

Re: Hello, I have created a distribution kit for my program.The problem is that the when the program is installed onto another computer, it fails to communicate with field point (Using FP-AO-200 and FP-AO-1000). Help is greatly appreciated, Thanks faen9901Faen9901,
1) If you do not install FieldPoint Explorer, the FieldPoint Server is not installed so there is nothing on the target computer that knows how to talk to the FieldPoint system.
2) Yes, you need an IAK file on the target computer. Assuming the settings (i.e. com port#) are identical you can simply include the iak file as part of the distribution.
3) You also need to include as part of your installer the file "fplwmgr.dll". If this file is not installed, your program will not be able to access the FieldPoint Server. Alternatively, this file is installed automatically if FieldPoint Explorer detects LabWindows/CVI or Measurement Studio Development versions on the target computer or if you choose to do a custom FieldPoint Explorer installation and
choose to provide LabWindows/CVI support.
Regards,
Aaron

I have problem in transfeering data using field point via tcp

I am reading the values from the filed point, which is connected, to the RT controller and transferring the values to the client PC via TCP at a specified acquisition rate.
 Case1 when the acquisition rate is 0.1 minutes I get the values from the controller correctly i.e. 5v, 5v, and the chart shows no change. The timed out of the TCP read is default value i.e. is 250ms
 But when I change the acquisition rate to .5 minutes I get the values as 5v, 0v, 5v, and 0v. The time out of the TCP read is same as first case. The inputs to the field point are at the constant 5v.
Please tell how to solve the problem so as to see the plot in the chart continuously as inputs for the field points the read
ing are at constant rate of input 5v.

Suresh,
Since this question deals with using the LabVIEW TCP/IP functions, you are better off posting it to the LabVIEW discussion forum.
Regards,
Aaron

Can FTP-access to field point log file interrupt the running program?

Can FTP-access to field point log file interrupt the running program?
We have a problem where our factory process control program on a Field Pointer suddenly stops the process. We are running the development system on a PC, wich deploys the program on the Field point, with user interface on the PC. Quite often the process stops for no apparent reason. I'm not sure right now if the control program on the Field Point is still running or if it stops. We use FTP from a distant PC (over VPN) directly to the Field Point to check if the process is running, by looking for date and size of log files produced during running process. I've never opened och copied any log file during process run, because this I'm sure this would cause problems for new log entries to be written. But can the mere looking at the log folder via XP-pros ftp-functionality cause the Field Point to have problems writing data to a log file?
I'm not sure how windows XP pro handles "my network places" when it comes to FTP, it look that it keeps some kind of local copy of the folders, or at least the files opened.
Next version of the program will have only basic functionality on the Field Point, leaving logging etc. to another program on the PC, but right now we are stuck with this system.
Ola A

It turned out that the problem lies in the harware of the production machine, it was not a labiew-program problem at all!
Ola

What are the limitations of using labview 8.5.1 developers suite verses a real-time module in field point applications?

What are the limitations of using labview 8.5.1 developers suite verses a real-time module in field point applications? Can an exe. be loaded onto a field point controller or does the controlling program have to reside on a PC for example?

centerbolt is correct, you can't load a .exe or even run a program on the fieldPoint controller unless you have the Real Time module. However, that does not mean you can't use your FieldPoint bank without the Real Time module.
From LabVIEW for windows you can make calls to the fieldpoint IO using the fieldpoint read/write functions.
This program runs on the PC not the FieldPoint controller. If you loose network connection to the fieldpoint, your program will loose connection to the IO. For many data logging applications this type of arrangement can work just fine. However, if this is the only type of application you are ever going to run, then you may as well not buy the Real Time controller for your fieldpoint but the network controller only.
If your application requires more reliability, and/or greater determinism than can be achieved by running a program on windows, then you should use the LabVIEW Real Time module and develop a program that can run down on the FieldPoint controller independent of windows.
Message Edited by StevenA on 07-22-2008 04:14 PM
SteveA
CLD
FPGA/RT/PDA/TP/DSC
Attachments:
fp pallet.PNG ‏6 KB

How to use the FP-DO-AC120 module on Field Point?

Hi,
I am trying to use a FP-DO-AC120 (discrete output module) as a relay to switch of an equipment I control via Field Point 2000. This FP-DO-AC120 is connected to a FP-TB10 terminal base along with some other modules. When I try to use the “write” function on MAX (Measurement and Automation Explorer), it doesn’t allow me to do so and the “this item is read only” pops up. Checking the channel type to where the module is plugged in it shows that is a discrete input channel. I’ve tried to change it to a discrete output type, but when I do so, the status of that slot is “empty base or terminal”. I don’t understand what is going on here. Could anyone please advise?
Thanks for the help.
Adriana

Adriana,
I found a similar discussion forum thread that addresses the same issue.
My FP-DO-AC120 module is being read as DI in FP Explorer, Why?
This is an older post, so keep in mind that all the functionality of FieldPoint Explorer is now included in MAX.
Otis
Training and Certification
Product Support Engineer
National Instruments

Distribute measurment studio application with opc conntection to field point

I have written an Measurement Studio application with an DataSocket connection to an OPC Sever of an field point 1808. If I distribute this application to another computer I can't get a connection to the OPC Server of the field point. The application works fine on the developent computer of the application. On the other computer is just installed the MAX and the drivers from the Field Point CD. As well I configured the Field Point on that computer. We I browse for an OPC tag in the distibuted application I am not able to access any OPC server, even if I see them. Does anybody have an explanation for that?
Thanks Bernd

Hi Daniel,
sorry that i answer you so late. I got an error like "opxproxy.dll could not be found". So meanwhile I checked the system and the opxproxy file was found in the "winnt/system32" directory. After i register the opcproxy.dll manually with the shell command " regsvr32 opxproxy..dll" everything was working fine. Normally, this file should register itself automatically.
Bye
Bernd

Digital Potentiometer control in Labview with Field Point Unit

Hi..
I need some help on programming the LABVIEW to control the digital potentiometer.
It is AD7376 which 4 channels are used to control the digital potentiometer, and Field Point Unit FP-DO-403 thr. RS232.
– Channel 0 (POT_D), Channel 2 (POT_CS), Channel 3 (POT_Clk), and Channel 7 (POT_R).
-SDI (serial data input) contains 7 data bits. The first is the MSB.
-ClK provides the correct time reading the serial data.
-CS (chip select) only allows the reading of the data. CS is on 0 during the loading. POT-CS is used when 7 bits data is finish loading.
- POT_R is used as CLEAR.
After the calculation depending of the different conditions, 7 data bits data is created and changed to the opposite numbers (1-->0, 0-->1).
For example; if the calculated binary number is 1001011, the the output 7 bits data is 0110100
so Those data has to go to SDI (Channel 0 (POT_D)) starting from 0110100 and for each bit CLOCK has turn on and off to shift the bits controlled by Channel 3 (POT_Clk).
For example,
0 ---> POT_D then POT_Clk -->On/Off
1---> POT_D then POT_Clk -->On/Off
0---> POT_D then POT_Clk---> On/Off
Can this be done automaticaly? Could you help me on this?
I was able to program it until producing 7 binary bits (refer to the attached file) but by Giving 7 different bits at once to ONE channel, I get error..
Message Edited by Black Comb on 11-01-2007 08:51 PM
Message Edited by Black Comb on 11-01-2007 08:54 PM
Attachments:
AD7376toBIN44.vi ‏49 KB

Black,
Here is a concept for how to do it. Did not have time to look at data sheet for IC but this should be a good starting point.
Attachments:
Create inverted 7Bit Array.vi ‏19 KB

Analog waveforms in Field Point

Hi all,
I have a Field Point 2000 which reads a load cell. I can display the readings in LabView using a waveform graph, but it seems the results are only coming out as a digital output, i.e., as a square wave. Is there any way of reding this output as a analog waveform. Does anyone know any function or vi that allows me to do so?
Thanks a lot,
Adriana

Adriana,
Assuming that you are using the Polymorphic version of the FieldPoint VIs, it is likely that the wrong version of the VI was selected. You should be able to right click on the FP Read.vi and choose Select Type. Under Select Type, you should choose either the FP Read (Float)or FP Read (Float Array) if you are using FieldPoint Refnums. If you are using the FieldPoint IO Point tag, you should choose either FP Read (Float -IO) or FP Read (Float Array -IO). For either of the above, you should select Float if you are reading a single channel and Float Array if you are reading multiple channels on the module.
Regards,
Aaron

Can I collect the pulse data using Field Point?

I have a water flow meter, which outputs pulses. I use a counter to connect it and read the data. Now, I want to read and save the data in the computer using LabView and Field Point. I think this can be done if I can collect the number of pulse. I am wondering how to do that.
Thanks.

Dear Zl,
Counting pulses is much easier with the FP-QUAD-510 or FP-CTR-500, but can be done with the FP-AI-110. You can't directly count the pulses with a FP-AI-110, but you can do it in software. Bring in the data by doing a normal read. Then, using shift registers, if the previous voltage is less than .8V (low) and the current voltage is more than 2.5 (high), increase the pulse count. I have attached a program that shows what to do with the data once you bring it in. I took the data from an array outside the while loop, but your data will be brought in one point at a time inside the while loop. One thing to take note of, since Fieldpoint brings in data at 1 kS/s, this will only work with pulses slower than 500 Hz. The farther the duty cycle is away from 50% duty cycle, the slower the signal must be in order to catch the pulses correctly. Please let me know if you have any questions. Have a great day!
Sincerely,
Marni
PS- Please only post question once.
Attachments:
pulsecount.vi ‏22 KB

Fieldpoint - How to reconfigured Field point hardware configuration

Respected Sir,
We are using labview version 5.1, operating system windows 95, FiledPoint explorer 1.6,
I would kindly request all to please help to solve how to reconfigured Field point hardware, I am new learner of labVIEW.
When i run Fieldpoint explorer 1.6, in labview 5.1 operating WINDOWS 95 version, i received one command as
A value return from the server is out of the expected range.
The FieldPoint hardware ranges need to be re configured, so they match the ranges saved in the configuration file.
Go to each device configuration dialog and select channel configuration to synchronize the saved configuration with the hardware configuration.
Thanking You
Yours faithfully
M.Viajy

That is correct. There is no way to simulate a FieldPoint device. The suggested workaround should work well for you, however. Create some simulated VIs that perform the same task as the FieldPoint writes and reads (at least in terms of what inputs they accept or outputs they have), and place them in the other case in a Case Structure as the FieldPoint VIs.
LabVIEW 8 takes these possibilities one step further with Conditional Disable Structures and Diagram Disable Structures. The difference between these two structures and a Case Structure is that code in the disabled cases doesn't even compile. This means you could even have broken wires or broken subVIs inside the disabled case, and you'd still be able to run your program. In the case of this FieldPoint application, you could use a Conditional Disable Structure that automatically polls the target OS type (Windows, Linux, Pharlap ETS, etc) and selectively compiles one case based on the target OS. This would allow you to seamlessly run VIs on your computer and FieldPoint without modifying any code. The other advantage is that the simulated FieldPoint code wouldn't get compiled when you target your real FieldPoint device, so you wouldn't increase your code size or memory usage unnecessarily for the final product.
Message Edited by Jarrod S. on 04-24-2006 03:51 PM
Jarrod S.
National Instruments

Does field point have pulse train output greater than 50KHz

I am trying to develop a flexiable simulator using NI Field Point. So far my only concern is producing a pulse train of around 500KHz. Is there a way to do this with field points counter moudles or with some other methodology

There are currently no FieldPoint IO modules that output greater than 16 kHz. Specifically, the following modules can output at the listed maximum frequencies:
FP-CTR-500: 16 kHz
FP-CTR-502: 16 kHz
FP-PWM-520: 1 kHz
FP-PG-522: 2 kHz
You could use some external signal generation circuitry that is controlled by the FieldPoint modules, but the FieldPoint modules themselves can not handle that speed.
Regards,
Aaron

Help on field point subvi

Hi to all, sorry for not making things clear.
I'm designing a project about field point temperature control. This is my first time doing on field point so please help me as much as possible. thank you..I found an example of field point temperature control and some of the subvi are missing, i.e. FP open, read, write, and so on. also, this project is a turn on/off fan with a relay. however, i'm using three fans and it should turn on/off at different time depending on the set of temperature,,, for example, fan1 will turn on at 25 degree C and turn off at 30 degree C,,then Fan 2 will turn on at 35 and off at 40,,, and fan 3 will do the same at 45 and off at 50 degree C,,
Can one Thermo couple do the job or should i have all Three thermo couple.
thank you in advance

Hello nw,
I will try to address all of your questions in an organized manner.
1. To change the [c]FP-TC-120 readings from millivolts to degrees you
will need to use Measurement and Automation Explorer (MAX).
            A. Find your
FieldPoint controller under Remote Systems in MAX.
            B. Right-click
on your controller and choose to Find Devices.
            C. Then, a
dialog box will appear so you can name your FieldPoint controller.
            D. You can use
the default name or re-name the controller yourself. Click ok when you
have named your controller.
          E. This will display
all of the devices you have connected to your controller.
            F. Click on the
[c]FP-TC-120 module and select the Channel Configuration Tab.
          G. A Range option
will appear so you can change the measured range of the module to
degrees. You can also define the thermocouple type on the Channel
Configuration
          Tab.
2. If you want to turn on and off your heater and fan based on the
temperature, the example you found has the basic structure. It will read
the temperature in via the FieldPoint Read. You can replace the pid.vi
with a case structure to write different values to your relay module via the
FieldPoint Write VI.
3. I am assuming that you are using a [c]FP-TC-120. If this is
correct, you will be unable to measure the temperature via a thermistor.
The [c]FP-TC-120 is a thermocouple input module and only able to measure
voltages and temperatures via thermocouples.
If you need further assistance, please provide a comprehensive list of the
hardware you are using.
Also, I would recommend looking through the FieldPoint Help
which can be found at C:\Program Files\National
Instruments\FieldPoint\documentation\Online Help\fplv.chm. If you are new
to LabVIEW, taking a look at this KnowledgeBase
Article that contains many LabVIEW learning resources.
Message Edited by Ching P. on 09-05-2007 10:39 PM
Regards,
Ching P.
DAQ and Academic Hardware R&D
National Instruments
Attachments:
Temp_Range_new.jpg ‏96 KB

The OPC Field Point Sever doesn´t run

I have LabView 6.0.2, LabView DSCM 6.0.2 and Field Point 3.0.2, I´m Controlling a process with my PC, but I cannot run the OPC Field Point Sever and I Want to Know What do I have to do to launch that Server or How I have To configure it to use it with my LabView program.

FieldPoint OPC server launches with Fieldpoint Explorer. Use the Server Explorer application to view available OPC servers.
Use the following KnowledgeBase article to configure LabVIEW for reading OPC.
http://digital.ni.com/public.nsf/websearch/EA15F53DB6FECCA5862567240064DF09?OpenDocument

Field point VI

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