vary the value of output of the digital HIGH output voltage.

Similar Questions

• Acquire the values only when the digital output is high.

  Hello

  I work with test of transistor, whose door is controlled by the digital release of USB6289, related to BNC2120.

  Test plan:

  Door 1.transistor is enabled for 5seconds, with P0.0 for example

  2. then, everything remains off for 1secondes.

  3.p0.1 is used as digital output to activate the circuit passing him curent through in the opposite direction, P0.1 goes high for 3 seconds, PS: Gate is off.

  4. the same cycle repeats again.

  My question is to store values to the output of the transistor when P0.0 and P0.1 goes high, and these values should not change until my digital outputs respective again go high.

  I can access transistor by continiously read out my power supply values.

  and in the State off I want to read AI0 because at that time, my power supply is off, so that I can activate the circuit to pass the current in the opposite direction.

  Again, my question is to gain the output through power value when P0.0 is high and store them until the transistor turns on.

  and even for P0.1, acquire the value of output through AI0, when P0.1 is high and store it until it goes high again.

  Hopefully, I'm able to explain my problem clearly.

  Please help me.

  Concerning

  Anurag

  Think about what States (object:statemachine and determine when to use sequence Structures) do you want from t0... t(n-1), IF DAQmx generates outputs and/or inputs are absorbed and what needs to happen (event timed out), before move you on to the next 'State '.

  type def 'enum' with your different States:

  • initialize
  • wait (the user initializes times (sec) set for States, or whatever and presses button 'Start')
  • T0 (generate DigOutputs, store acquired data AnalogOutput (string output number) the register shift, before moving to the next State > user 'set time' must elapse (Note: the wait function allows you to control the rate of execution of loop and allow the CPU to respond to external events and system tasks and avoid using wait functions at the same time an operation of software...))
  • ...
  • t(n-1) if ' end (made requirement) "> goto 'stop', ' another (not requirement not)" > goto regardless of 'State '.
  • stop
  • write a text file of data (string).

• I use the full version of DASYLab 8.0, how to add PID module in the design of the façade (window layout)? while I can vary the p, i, d values in the window layout

  I use the full version of DASYLab 8.0, how to add PID module in the design of the façade (window layout)? while I can vary the p, i, d values in the window layout

  To do that you will need to change the varibles PID values and then use the sliders to add numbers to a latch for variables that point.

  This is how I think it works in Version 8.

  In all cases, you should move on to 12 more stable summer.

  In addition, unless that is a very slow process, I generally do not like closed loop PID with DASYLab due to the fact that computers is not reliable with timing.

• analog sync of input with the onset of the digital output

  I'm trying out an analog signal to a file with a specified frequency samples.  I also need a digital output to trigger a measurement at a frequency specified on a separate system.  The frequency is controlled by the loop exits and timed when the iteration number divided by the period is exactly a whole number.

  Both outputs work.  The problem is that they are not synchronized.  The analog output amounts to about 0.5 ms faster than the digital signal.  (I checked with an oscilloscope)  They both start in the 1 ms each loop runs for, but I really need them to start at the same instant.  What can I do to synchronize?  Also, if I'm going in the wrong direction complete, please indicate.

  I use a card PCI-6723, which I think someone at some point, said not having a material sample clock.  That's why I try to use a timed software loop.

  Hi NEA.

  You must use the 6723's built-in calendar to accomplish what you want.  As the digital output subsystem is only clocked by the software, an appropriate solution should be to use one of the counters to the pulse output.

  The attached code should show how.  You can use the counter to output a pulse all samples of the AO N task.  Material requires the initial delay to have a minimum of 2 ticks, so the meter will be behind the task of the AO by 2 samples in this case.  There are different ways to work around this problem if you need (for example write two samples of 0 first).

  Best regards

• What is the current max on the digital output of a Terminal BNC - 2110

  Im a using a card of data acquisition of 6221 with a block of connection BNC-2110 connected to it. For the e/s digital terminal block provides an additional 5V input. Unfortunately I don't seem to find any information as to know if this provides additional current to the TTL signal or no training. Is there an internal pilot in the terminal block, or - if I need to connect external relays to the digital output - always connect a current driver in between?

  Thank you

  Wolfgang

  You can replay the 6221 and BN_2110 manual. The + 5V pins are outputs of the DAQ card - they are not entries.

  Yes, you will need external circuits if the external relays require more current than can provide the DAQ card.

• How to configure the digital output of the pci terjeta 6023E in LabVIEW 8.5?

  Hi, I have a card PCI-6023E and LabVIEW 8.5 and I need is to configure the digital output on the card, but did not.
  My idea is to get a port of digital data on the map and control by a pwm small dc motor.
  I wonder what are the modules with which you can do.

  Hi skudero,

  Probably the web page tracking and the attached example will work.

  PWM in software timing using a digital output line

  Concerning

  Charley - NIB - SR 1368189

• Binary output to the digital output as 1111 1111 1111 pin

  Hello

  I use DAQ 6009 and I need output such as 1111 1111 1111, at the digital output (12) of data acquisition. Please give an idea or a vi to do

  Thanks in advance...

  Hi DK,.

  Look through the viewfinder of the example for example appropriate screws...

  In general: open/create one task DAQmx, select all lines, exit TRUE for all channels...

• an alarm can be set to control an external device using the digital output?

  My employer is considering buying a 6210 DAQ and SignalExpress (we currently use a branded DATAQ device).

  Looks like I can use the alarm function SignalExpress to define a logic high or low line, controlling a SSR to stop a pump (a non-critical application).

  Can I use SignalExpress in this way?

  I know LabView can do, but there is no way that the company appears for him.

  Thank you.

  Hi Jack, this is Paul with Applications Engineering at National Instruments.

  SignalExpress supports the functionality you want.

  «Once you have configured your signal to acquire you can go to "Save Options" > "Alarms" and then set the alarm conditions, and then choose your Action to alarm as «Defining the digital line»»

  I've attached a screenshot of the example of this configuration.

  

  Note here that I put it down when the alarm turned on.  You there are other options, including a rocker.

  Let us know if you have any other questions!

  Paul

• the value of the digital inputs to change the field

  Hi all

  I have an edit field that has a digital text filter that only accepts phone numbers. Users have the choice to load these numbers from address book or direct entry.

  I used the digital filter to allow only numbers. .

  But when I tried to load these address book.  with editField.setText (phoneNum); It is to throw IllegalArgumentException.

  How to set digital inputs to the editField?

  Hi thanks for all your entries!

  My issued are resolved. I used BasicEditField aulieude EditField to solve this problem. the basicedit field allows the digital text and it solved the problem.

  Thanks for all your interest...

• simultaneous monitoring of the digital input lines when executing digital writing tasks

  I'm writing a multithreaded application in C on Windows 7, using the 9.6 DAQmx API and device USB-6509. This requires that we constantly monitor several lines on the 6509 for entry, digital using the change of the device detection feature. You must also write the digital output without having to stop monitoring the input rows. It is very important that the input rows be monitored continuously for the duration of the project.

  In the DAQmx manual reading, it seems that it is impossible to make a digital reading as well as a digital writing occurs, even if these tasks are performed in different threads. (The same I understand, that it is impossible to have several tasks of digital entry running simultaneously.)

  It seems that it would be possible to launch the task for reading (configured with the change detection), to pause playback, start the writing task, pause the task of writing, and then re - start the task of reading. But - and this is the important part - for the duration of the writing task is running, is it possible to configure it to the task of reading will always monitor the lines, even if it's just stores the data in the buffer for these periods? The key is that the data will be lost.

  Thank you

  Danielle

  Each channel is independent. If you can get the input data that you export a value. You need not make a break each task. The two tasks are parallel.

• Connect the digital field with Drop Down

  I have a numeric field for the zip code and a drop for the city.

  I want that when I write the postal code in the numeric field to automatically display the city drop down list.

  And even when I chose to drop down the list then show in the digital field (postcode)

  I have all that in Excel.

  Thank you

  Use dynamic properties.

  Start by importing the xml from your spreadsheet (you're on your own with who) excel. Assuming that each line is a city and a postal code, your xml code will look like this:

  SomeCity

  12345

  .

  .

  .

  (1) in the designer, go to file > new connection of data...

  (2) select the sample XML data and the file in Excel.

  (3) make good properties sure dynamics are enabled, tools > Options > Data Binding > show of dynamic properties.

  (4) select your fall down and open the field in the object Palette tab.

  (5) you will notice that the list items is green and underlined. Select it.

  (6) for items, select the line

  (7) for the text of the item, select the city

  (8) for the value of the item, select the zip code

  You now have your menu dropdown bound to the data in your Excel worksheet.

  Now, just a bit of coding (brace yourself), in the digital realm for your zip code, in the case of output put:

  theDropDown.rawValue = this.rawValue;

  and to theDropDown:

  thePostalCode.rawValue = this.rawValue;

  Now all you have to do is import xml into your form to perform.

  Kyle

• Validate the digital field - can be 10, 20 or 30

  I am using LiveCycle Designer ES (Version 8.2).

  I have a numeric field that can hold a 10, 20 or 30. It can also be empty, and I guess, a zero would be nice too.

  How can I accomplish this, since I'm a newbie here?

  Thanks for the comments.

  Hello

  If your entry is limited to only 10, 20 or 30, you can use a drop-down list instead of a numeric field.

  A drop-down list is good when you want to make sure that only user predefined values input and define the formats and connections.

  Implement the items in drop-down list in the object Panel and uncheck the box 'allow cistom entry. Go to the control panel link, and select the checkbox 'specify values. Assign a value of 10 '10', etc.

  You will be able to refer to the rawValue of the drop-down list script later, as you would with a numeric field.

  If you want to go with the digital field, you can set up a Javascript script in his output event:

  If (this.rawValue == 10 | this.rawValue == 20 | this.rawValue == 30)
  {
  do nothing
  }
  on the other
  {
  App.Alert ("invalid data entry: enter 10, 20 or 30");
  this.rawValue = null;
  }

  Good luck

  Niall

• is that any limits the current entry for the digital I/o?

  Hi all

  I wonder if there is no limit on the input to the digital I/o port. I have a device about 0.2 volt voltage outputing and the manual says the maximum sink current is 25mA. I connect this signal to a DI entry in my 6711 map. I wonder if the current is too large for the entrance of DI or the PFI?

  As we have already mentioned, there is no current flowing on the device in low level mode.

  The current specifications mentioned see the maximum current that can be managed by the device in low level mode.

  I hope not to confuse you more than necessary. On a row of data to the TTL level, nothing flowing from the device to the main circuit in level mode high current. In low mode, there is flowing in the main circuit in the current device. This current is inherently limited by the circuit.

  So, if you have a file specification of 25mA max. of the peripheral device in low level mode, it will never sink too much power from the main circuit. You can connect two devices without any risk. The maximum current is just specified in case you manage more current with the device, a led or a relay for example. In this case, the charge current must be limited, so that you do not damage the device. But - as mentioned - this is NOT the case in your application.

• How to control the output voltage?

  Good time after some time can get the output voltage, but this value is alwayscontinuous. How to control the voltage output through a Boolean? In

  in order to get this tension when I want to.

  Greetings.
  Hugo Santos

  Hi Hugo,.

  If you use a LabVIEW project, you must set the time of sampling in the properties of the node (see SamplingInterval.png). But this time to refresh the data should be high enough. If you take into account this update of time trying to control your way out.

  Kind regards

• Optimize the time spent in the digital resolution of ODEs?

  I'm numerically solve an ODE to the RK4 VI. I need to use a size of fixed bearing that I need in order to save the values of synchronously. Running a time step now takes about 5 ms on average. I ran the ODE even under Mathematica and obtenu.2ms at the moment. Are are better over there of the digital solvers that I could use?