TCPIP using niMAX

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  SystemPrefs/network shows (connected) GREEN.

  Google - tried different things: flush DNS cache, the DHCP lease renewal, start in safe mode...

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  Line is good because the line that I use on this computer is not also there work.

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  Also turned off firewall.

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  Must be a curse. How to break?

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  I tried everything and it didn't work. I've done a first aid provider in disk utility and then it worked!

• NI488.2 throws an exception

  I'm controlling a cold room using c# application via the Instrument National .NET assemblies. My obversations are:

  1. software development - works PERFECTLY with the Instrument.

  2. computer deployment - (installed NI488.2 + NIVISA drivers)-throws an exception (see below) when running my c# application

  3. computer deployment - (Using NIMAX - Instrument works perfectly) - I also double checked the port settings.

  Versions used in development computer - NI488.2 (8.9.35.104)

  The versions used in the deployment computer - 2.24 OR-488. 2 + NI-VISA 4.1 + NI-VISA DURATION 5.0.2

  Help please!

  Error:

  18/01/2012 14:17:22: the initializer for type for 'NationalInstruments.NI4882.Internal.GpibDll' threw an exception.
  18/01/2012 14:17:22: NationalInstruments.NI4882
  18/01/2012 14:17:22: at NationalInstruments.NI4882.Internal.GpibDll.ibdev (Int32 boardID, pad sad Int32, Int32, Int32, Int32 eot, Int32 eos tmo)
  to NationalInstruments.NI4882.Internal.DeviceImpl... ctor (Int32 boardNumber, Byte primaryAddress, secondaryAddress bytes, TimeoutValue timeoutValue, Boolean setEndOnWrite, Boolean, ByVal sender endOfStringCharacterUsedOnRead)
  to NationalInstruments.NI4882.Internal.DeviceImpl... ctor (Int32 boardNumber, address, ByVal sender)
  to NationalInstruments.NI4882.Device... ctor (Int32 boardNumber, address)
  at BaseBandTester.TempChamber.setup_GPIB (primaryAddr bytes, secondayAddr bytes, Int32 boardNum)

  HELP PLEASE!

  Hello

  You have it listed for GPIB software versions

  Versions used in development computer - NI488.2 (8.9.35.104)

  The versions used in the deployment computer - 2.24 OR-488. 2 + NI-VISA 4.1 + NI-VISA DURATION 5.0.2

  The 8.9.35. 104 is the version of the .NET library.

  The 2.24 is the version of the software to control GPIB (dll)

  Make sure that the deployment machine, you are having issues with that has a version of the DLL that is the same or higher than the development computer.

  Look under "Software" in the NOT-MAX.

  Curt

• change of scale of a channel running from the DAQmxSetScaleAttribute task

  Hi all

  simple system configuration: AI channel is configured using OR max and also using a scale that is configured in NI Max.

  Once the system is running, the task of the program started and playback of data acquisition, everything's fine. now I want to do is get the value of a string and reading that the DAQmx reads on the channel by chaning the ordinate at the origin of the linear scale at zero. I tried to get the y-intercept value and the actual value of the existing interception and defining the DAQmxSetScaleAttribute with the new linear value and nothing changes on the sudtracting channel. Possible solutions, I tried shutting down and restarting the task but not clearing and reloading of the task.

  I also tried DAQmxSaveScale, but the value in NImax for interception does not change either.

  is it somehting in the order of calls which must happen, or I can even change the scale on a task without compensation or recharge it the task?

  OK, that's how I got it working again noted that the system is configured using NImax and all the channels to HAVE are in a single task, also an important feature is that I use the DAQmxRegisterEveryNSamplesEvent function. each channel also has its own scale.

  First you need to find is the next shift, you need to recalcualte the max and min to the beach of this channel and save everthing.

  DAQmxGetScaleAttribute ("1Dist", DAQmx_Scale_Lin_YIntercept, & readOffset);  \\get the existing scale value
  stopDAQ();
  GetCtrlAttribute (panelManual, MANUAL_1POS, ATTR_CTRL_VAL, & actualReading);   \\reading off the coast of data acquisition
  newOffset = (actualReading + readOffset) *-1;                                                                     offset \\calcualte
  ERR is DAQmxGetChanAttribute (gDAQTaskHandleAI, "1_Unit_Ext_Pos", DAQmx_AI_Max, & max, NULL);.   cahnnel \\get NIMAX Info
  ERR is DAQmxGetChanAttribute (gDAQTaskHandleAI, "1_Unit_Ext_Pos", DAQmx_AI_Min, & min, NULL);.      cahnnel \\get NIMAX Info
  newMax = max + newOffset;
  Max = newMax;                  ------It will be ediedited what I did was made max an int to get rid of the decimal points
  newMin = min + newOffset;
  min = newMin;                   ------It will be ediedited what I did was made max an int to get rid of the decimal points
              
  DAQmxClearTask (gDAQTaskHandleAI);                                 \\clear the task due to the attached DAQmxRegisterEveryNSamplesEvent will thow errors because it is attached to the task
  DAQmxLoadTask (DAQMX_TASK_TITLE_AI & gDAQTaskHandleAI);
              
  ERR = DAQmxSetScaleAttribute ("1_Act_Ext_Dist", DAQmx_Scale_Lin_YIntercept, newOffset);
  ERR = DAQmxSaveScale ("1_Act_Ext_Dist", "1_Act_Ext_Dist", "", DAQmx_Val_Save_Overwrite |) DAQmx_Val_Save_AllowInteractiveEditing | DAQmx_Val_Save_AllowInteractiveDeletion);
  ERR = DAQmxSetChanAttribute (gDAQTaskHandleAI, "1_Unit_Ext_Pos", DAQmx_AI_Max, max, NULL);
  ERR = DAQmxSetChanAttribute (gDAQTaskHandleAI, "1_Unit_Ext_Pos", DAQmx_AI_Min, min, NULL);
          
  ERR = DAQmxSaveTask (gDAQTaskHandleAI, DAQMX_TASK_TITLE_AI, ' ',)
  DAQmx_Val_Save_Overwrite | DAQmx_Val_Save_AllowInteractiveEditing | DAQmx_Val_Save_AllowInteractiveDeletion);
  DAQmxClearTask (gDAQTaskHandleAI);
  DAQmxLoadTask (DAQMX_TASK_TITLE_AI & gDAQTaskHandleAI);
  GetCtrlAttribute (panelDAQ, DAQ_PANEL_SampPerChannel, ATTR_CTRL_VAL, & sampsPerChan);

  DAQmxRegisterEveryNSamplesEvent(gDAQTaskHandleAI,DAQmx_Val_Acquired_Into_Buffer,sampsPerChan,0,EveryNSamplesCallback,);

  startDAQ();

• orders or visa of TCP/IP by using visual basic

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  Hello

  The following tutorial will guide you through a few failures of measures to ensure that your instrument is connected correctly, this should help us understand whence the questions.

  Instrument Ethernet Control tutorial

  Introduction to the Instrument control using Ethernet

  Thank you

  Scott M.

• How does a facility TestStand to parse a string to a TcpIp Read?

  L & G,

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  I look forward to your responses and thank you for your help.

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  L & G,

  I figured out how to create and use a local variable (string) as the chain of TCPWrite by simply changing the TCPWrite to the stage and set the the Results.Data value to use theLocals.TCP.

  Concerning

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• Problem by acknowledging an instrument in series with a USB adapter in NIMax

  Hi Forum,

  I have an instrument designed to be controlled via a signal with a RS232 cable series and I try to get NIMax to recognize and send test orders.  My laptop (running Windows 7 Enterprise) has no serial port so I use a USB adapter to connect.  When I could not initially the device appears, I searched online and find suggestions that I should install the NI-VISA driver.  I downloaded and installed, but it does not help - to open VISA test panels is greyed out and it indicates that the unit is 'away' even when it is plugged.  When I open the control panel interactive of VISA directly, the device appears as a question mark, and if I double click top, it says the following:

  Error opening resource:
  ASRL10::INSTR

  VISA: (Hex 0xBFFF0011) insufficient location information or the device or resource is not present in the system.

  Any thoughts on how I can get my PC to communicate with the device?  Thanks in advance for your help.

  Erica

  

  EricaK wrote:

  Thanks for the tip, I didn't know that I needed to install a driver for this.  Do you know if a general device like this driver will work.

  You need to install some drivers Windows are necessary for your USB-serial adapter (should have with the adapter).  Once Windows detects the serial port will be MAX.

• How to run a macro NIMax?

  deploy the instruments running labview with NIMax control cameras at remote locations without good phone or internet access. People with various system configuration training. They sometimes have difficulty following some basic instructions for NIMAX. I would like to define a macro for NIMAX perhaps executing 6 instructions. Is that possible in NIMAX or I need to associate another application?

  According to what are your '6 instructions', there may be a LabVIEW code simple, that we can use to perform the same functionality. It is not any direct way to automate the selection of parameters to the MAX, but we can do things like write settings of the camera, grab an image to align the camera, etc. from LabVIEW.

  Best,

  Daniel C.

  Technical sales engineer

• NiMax tasks vs tasks created in the code which is faster?

  I'm curious as to which is better to use, tasks created in NiMax or tasks created in the code? If I acquire 8 analog channels, there is a downside to create tasks in NiMax speed? I know there is less code involved but what about the time it takes for labview read the configuration file that contains the tasks that are defined in NiMax? There is a significant advantage in the code?

  Thank you

  Bryan

  BryanSw wrote:

  I'm curious as to which is better to use, tasks created in NiMax or tasks created in the code? If I acquire 8 analog channels, there is a downside to create tasks in NiMax speed? I know there is less code involved but what about the time it takes for labview read the configuration file that contains the tasks that are defined in NiMax? There is a significant advantage in the code?

  Thank you

  Bryan

  I'd go with the third Option (which is the one I use) - set the task in the project.  First of all, define the task in MAX, make sure it does what you want and you are happy with it.  Then go into project, New, DAQmx task, and once again, to register in the project.  Use one in the project, which "lives" with the project and not with MAX.  If you need to change a parameter at run time, it is a great time to get some code...

  Bob Schor

• NIMAX, how to create a digital line for address GPIO

  Please, let me ask you a question about IO port address the NIMAX and PC.

  I have an industrial PC with available GPIO ports.

  The example of reading and writing address was broadcast on the underside.

  address port number is 50Ch.

  How can I create the line digital 50Ch in the NOT-MAX.

  Thanks for any suggestions.

  

  MAX is useful for the hardware configuration of OR.  Since this GPIO is not a product, NOR it will be not configurable in MAX.

• TCPIP VISA is difficult to establish

  I am writing a program to set and play an instrument of iTC Oxford via interface ehthernet.

  The problem is, once I stopped the program and run it again, I get a time-out error.  Each time, I try several times Run/Stop to make it work again.

  In the program, I have clear VISA and VISA clean (TCPIP) at first, then VISA Open.

  I checked connections TCPIP in the window cmd "netstat - n". If run correctly, I got the status 'Established', otherwise "TIME_WAIT" or "CLOSE_WAIT".

  How to solve this problem?

  Thank you.

  WT

  LabVIEW 2013 sp1

  Do not comment (yet) on the other possible problems with your VI, first of all please fix up the shutdown of your VI mechanism! What you use today is totally stupid: you set the while loop to run forever, and I assume you are using the button 'Cancel execution' red bar of tools of the VI up to stop your VI. This is not good. That way your code (function Close VISA) outside your time looping works not at all, since you just stop running. Therefore, your VISA resources are not released. Remove boolean False connected to the stop of the While loop condition and place a stop button. Do NOT use the Red Abort button and more!

  

• NImax.exe entry point not found TDMS_GetDataValueEx in cviTDMS.dll

  I have a remote PXI-8108 and I am trying to create a task in MAX.  I have no other task, because this is my first attempt to create a.  The following sequence is executed on the remote system: left click on the PXI-6713 under ' devices OR-DAQmx '--> the task of creating--> trigger signal--> analog output--> voltage--> ao0--> name by default 'MyVoltageOutTask'--> click on "Finish".

  An entry Point not found error called "NIMax.exe -" window appears with the following message: the TDMS_GetDataValuesEx procedure entry point could not be located in the dynamic link library cviTDMS.dll.

  The only option is to click on 'OK', date at which the box reappears constantly.  the only way to get rid of it is to kill MAX in the windows Task Manager.  When I restart MAX, district data remote system has broken below task and clicking on it locks up program (a need to kill another in windows Task Manager).  The only way to get rid of it is to reset the distance the DAQmx system setup and start again.

  I reinstalled NIDAQ 8.9.0, reset the configuration of the remote system in MAX, set day/reinstall all the software on the remote system (so that it matches the host system).  don't know what else to try.  I think that this should be a basic step: I did a lot of times with features simulated on a host system.  Not sure why the remote system gives me problems.

  I was able to do this on a controller of 8196 DAQmx 9.0 on the regulator and my computer having 8.9.5 smoothly.  Upgrade to 8.9.5 9.0 or even should update MAX and hopefully get rid of what you see.  You are right that the host and the controller must have the same driver version so make sure that you update the two together.  It is quite strange that the error is the link to a DLL of LabWindows/CVI.  Do you use a RT CVI on the controller?

• How to detect a TCPIP SOCKET lost with LabVIEW and NI-VISA

  I use VISA functions in LabVIEW to communicate remotely with instruments on visa TCPIP SOCKET resources.   In general, this works well simply by creating a resource, from name to VISA Open then setting some attributes of the session.   Sometimes an instrument will reset or pedaled and this power, I've noticed, is that I have to call a VISA Close, then reopen the resource so that it can communicate again or close LabVIEW and run again.   If you use only VISA Open without calling a VISA near first of all you cannot communicate with the target.   The problem is that I have no way to detect this condition.   I tried to always call a close VISA before VISA Open and it seems to work for this condition, but it seems weird to always close a session before you open it.   Why no VISA OPEN does not work under this condition, and is it possible to detect this situation?

  It works this way because this is the behavior of TCP. A TCP connection is a connection dedicated between two end points. Hand unfortunately get an error of a read operation or in writing there is no way to determine if the fly othe of the connection is still there. You must close the connection, because otherwise the VISA will continue to use th eold connection that is no longer valid. Close it allows the cleaning system the dead link.

  If you communicate very often, you could simply open the connection, have you stuff and close it. Overhead costs for the establishment of the new connection are not that much. If you use a constant flow of data then you will need to monitor errors and then reconnect by closing the old one and open a new connection that you have observed.

• How can I configure i/o Protocol TCPIP/series-488 (4)?

  We strive to communicate to an instrument that can accept orders on Ethernet GPIB.  We got things as much as possible along and changed all the vendor code to allow us to use a VISA TCPIP session, but we get an error when the code calls the VISA Read STB.  Help on the VISA Read STB implies that if we can set the property e/s Protocol on Serial-TCPIP/488 (4), all must be very well, but we'll have a moment difficult to find how/where we would find the place to do.  Any help would be appreciated.  Thank you

  Erich

  My guess is that they are referring to the creation of a property node VISA on the block diagram below features > Instrument i/o > VISA > VISA advanced > property node. Set this function and 'ownership' right-click, then select Properties > Message based Setttings > IO Protocol. Right-click on the block i/o Prot and change to write. Right click again and create constant. Choose 'Serial-TCPIP-USB/488 strings. It is the fourth selection in the list.

  I hope this helps.

• Why do I get a warning "stop character has been read" with VISA read and TCPIP?

  I use VISA readings with raw sockets TCPIP without problem with NI-VISA 3.0.1 but when I moved to NI-VISA 4.4 I was getting timeout errors.   Time-out errors disappeared when I put the stop character allow the property (which seemed to be default in NI-VISA 3.0.1) but now I get a warning indicating that the "stop character was read.

  Can I turn off this warning?   Can I put the ending character activate by default?   How can I get rid of this annoying warning?

  Hey, Dagwood,.

  Unfortunately, there is not a way to globally change the attribute VI_ATTR_TERMCHAR_EN to VI_TRUE.  Talked with R & D ability to use registers and they say that it is not accessible through that.  To answer why this change was made so the developer who made the switch isn't around more I can not find his reasoning to explain.  The best to you in your code would be during initialization, use the node property VISA to make the change and until the closure of this VISA resource, this change will be the value that you assign the value.  I'm sorry, we cannot provide any other solution for these problems.  Also, if you feel that it is a heavy load on your programming practice you can certainly submit a product idea for the ability to change the overall values for default attributes VISA.

  Thank you