Can the DAQPAD-6016 generate a pulse train?

If so, what is the procedure and what pins are involved? Also, where can I find a 6016 Users Manual showing a pinout description?

Avana,
Greetings!
You can find a pinout for the 6016 from this manual:
http://sine.ni.com/apps/we/nioc.vp?pc=res&cid=14041〈=US&p_0=manual
AND
Yes, you can setup a pulse train. You would use the counters. If you are using LabVIEW you can go to Help >> Find Examples to help you set this up.
Hope this helps,
AnujD

Similar Messages

Generate a pulse train using a count from a quadrature encoder as the clock

I am trying to generate a pulse train with the same frequency as my quadrature encoder. Every time the encoder counts, I want the pulse to go high until the next count and then go low and so on. I am using a 6602 PCI card and a BNC 2121 accessory.

Maybe I'm not understanding your app, but I *think* you and I are approaching it from two very different directions.
As I understand it, you'd like to emit a pulse with each quad state change. Then that pulse would act as a counter Source signal. The counter will then increment on each pulse, to keep track of accumulated position. Further, you'd use your device-under-test (DUT) as a counter Gate signal, which would buffer the position count each time there's a rising edge on your DUT. The end result is a buffer of position values, captured at each rising edge of your DUT.
I'm talking about a different approach to produce the same data. You'd use 2 tasks on a M-series board. One of them is a hardware-timed digital input task based on "change detection." Each time one of the specified bits has a transition, your whole set of digital input bits can be captured and an internal "change detect pulse" is generated on the board. This task should be sensitive to the DUT edges.
The other task would be a buffered position measurement. It would receive the reference encoder inputs and internally do quad decode and keep a running count. The sampling clock for this task would be specified as the other task's "change detect pulse."
Net result: on each specified edge of your DUT, you'll buffer a reference encoder position value and a digital state of your DUT. You can choose to be sensitive to rising edges, falling edges, or (!!!!) both at once. You can also choose to be sensitive to many bits simultaneously. These are better capabilities than you get with the 6602 alone.
I *think* the 6220 should be ok, based on a quick overview of specs. I assume your 3.6 MHz is the rate of ref encoder quad state changes, right? In the approach I'm suggesting, you only need concern yourself with the rate of DUT edges which appear to be in the 10's of kHz or less.
Gotta go for now. Post back if any further questions.
-Kevin P.

How can we generate a pulse train with variable inster pulse delays?

I want to generate a pulse train with random inter pulse delays (100us-10000us) and the pulse width would be 50-100us. I programmed for single pulse generation using counter cfg,a for loop contaning set attribute parameters pulse spec 1 and pulse spec 2. I changed the pulse spec 1 value in every cycle
This program is generating the pulses but not the exact values in the sense the some times the delays are more than 10 msec. As per the program the delay should be maximum 10 msec. please help me ASAP.
thanks
thota

Hey Thota,
I would suggest to take a look at the example program linked below. It shows how to change pulse specs on the fly. You have to be make sure you are ignoring a certain error when doing this.
Pulse Train Generation with Changing Pulse Specs (PWM)
http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B45EACE3E21756A4E034080020E74861&p_node=DZ52328&p_source=External
I hope this helps.
Regards,
Todd D.
NI Applications Engineer

Generating a pulse train

Hello everyone,
I'm using one counter timer from the DAQ card PCI-6014. I want to generate a pulse train with this output where I can control the number of pulses and the frequency of the pulse. The duty cycle is not important, I want to use the default value, i.e. 50%.
I have used the vi called "train_impulsion2.vi" with the following values:
-number of pulses = 10
-frequency = 1 Hz
-duty cycle = 0.5
When I connect the output from the counter timer 0 to an oscilloscope (pin 2 and pin 53), what I see is a constant 5 V for the 10 sec. I don't see the 10 changes from 5 V to 0 V as it would be expected. No falling or rising edges are observed.
However by using the DAQ assistant with the vi "daq_assistant_pulse_train.vi", with the following numbers:
-time high = 500 ms
-time low = 500 ms
-generation mode = N samples
-number of samples= 10
I'm able to observed what I want, i.e. 10 changes from 5 V to 0 V on the oscilloscope.
How can "train_impulsion2.vi" works like "daq_assistant_pulse_train.vi"? Thanks a lot
Marc
Attachments:
train_impulsion2.vi ‏21 KB
daq_assitant_pulse_train.vi ‏101 KB

Hello everyone,
Everything is now ok. I didn't put the correct leads inside the oscilloscope. That's why I wasn't measuring any rising or falling edges. Doh!!!!!!!!!!!!!
Marc

How to generate a pulse train with different pulse width and delay?

How to generate a triggered pulse train with different pulse width. for example, after each trigger signal, let's say 2 ms, then the counter output a pulse with pulsewidth of 1 ms, and then after 3 ms delay after the first pulse, the second pulse was generated with a pulse width of 4 ms. Next cycle when the trigger signal comes, the same two pulses will be generated and so on. Is it possible to achieve this by using 6601 counter card? and if yes, how to achieve this? Thanks!

Unfortunately you can not create a hardware timed pulse train with different widths on each pulse from a counter. Whilst it can be changed on the fly using software, since you require a hardware triggered signal getting the software involved will not give a huge amount of accuracy when the pulse will actually change.
So in short you can't use your 6601 card (or a counter timer) to achieve this
There are three possible Alternative solutions
1 You could use a high speed digital IO device such as the (6533/34) to generate your variable signal which would require setting up the pulse train as a series of states based around the burst transmission mode where the clock would give you your specific timing.
2 A timed analogy output (for example on a MIO card with a clock (PCI-6220 / 62xx), i.e. Not the 6704 style static analogy output cards)
3 A high speed digital waveform card such as the (, 656x , 655x, 654x, 6534, 6533 (http://www.ni.com/modularinstruments/find_right.htm) ) this could then be scripted to work with your triggering and also there is a digital waveform editor which will enable you to set up the pattern you wish to generate (http://sine.ni.com/nips/cds/view/p/lang/en/nid/13555)
Hope that helps
Tim Matthews
NI (UK)

Generate a pulse train

How do I generate finite pulse train of 3 pulses of 25us pulse width, pulse period (1/(7000Hz)), and retrigger the same finite pulse train every 588.23us with the PCI-6602?
What are the externals connections?
What is the right Labview programming?

this can be done with the 6602 using multiple counters, but this board has 8 so you will still have many left over for other tasks.
You will need essentially 2 tasks, one taks is a retrigerable gated finite pulse train and the other is a simple finite pulse train.
I have done something similar using DaqMX and LV 7.0
To create the finite pulse train, create a CO.PulseTime task, create a channel setting the high times and low times (25 microseconds)and set the low polarity. I will assume that such a pulse train is going to trigger some external event or other DAQ card. Next set the timing to be implicit and sample mode to be finite and the number of pulses to be 3. To handle the retriggering and gate properities use a channel properitiy node and select:
StartTrigType = Digital Edge;
Start.Retrigerable = True;
Start.DigEdge.Edge = Rising;
Start.DigEdge.Src = PFI number of the out from the continious pulse train.
This last option will allow you to route the trigger from the controlling pulse trian to trigger your finite pulde train.
Now set up a second task to put out a continious pulse train with the period equal to the total durration between finite pulse trains (~500microseconds I dont have the exact number in front of me).
After creating these two tasks, start the retriggerable task first.
now when you start the continious pulse train you will get a finite pulse train of 3 pulses every time the rising edge of the continious pulse train fires. Stop and start the continious pulse train using software at will but only stop the finite task when you are done. Hope this helps.
-Paul
Paul Falkenstein
Coleman Technologies Inc.
CLA, CPI, AIA-Vision
Labview 4.0- 2013, RT, Vision, FPGA

Generating multiple Pulse Trains.

I am trying to generate two different pulse trains. Once the first pulse train has begun I need to start the
second pulse train approximately .69444 ms after the first has started. I am currently using the two counter channels on the NI ELVIS, but the second pulse doesn't always start after the first, but it does work sometimes. How can I fix this? Attached is my vi file.
Thanks,
David
Note: Each pulse train has a 33% duty cycle.
Attachments:
SaO2.vi ‏91 KB

Hello,
Here is what I would try:
1. Set up counter 0 to perform a continuous pulse train (see the LabVIEW example called Gen Dig Pulse Train-Continuous.vi)
2. Set up counter 1 to perform a continuous pulse train with a digital start (see the LabVIEW example Gen Dig Pulse Train-Continuous-Dig Start.vi)
A. Modify this example code so that the trigger source is your counter 0 output.
B. Modify this example code so that the initial delay value of the pulse train is 0.7 milliseconds (or whatever delay you want). Create the delay with the input to the DAQmx Create Channel VI (the delay is currently set with a default of 0.00 seconds).
What you are doing is triggering the second counter off of the rising edge of the first counter. So, counter 0 will start generating a pulse train. Counter 1 will not start until the rising edge of counter 0's first pulse has occurred. Once this trigger has occurred, Counter 1 will start (after the initial delay time of 0.7 ms has passed). You can cut and paste to put the code of the two examples together.
Hope this works for you,
Sam

How to change the frequency of a finite pulse train?

Hi all? I Know I’ve asked once a similar question, but I need a better answer. I would like some ideas or examples on how to modify the example in LV; "Finite Pulse Train Generation - Intermediate for AM9513-Based Devices",so that the frequency can be changed while the VI is executing.
Will i have any problem with I use this VI in a DAQ-STC-Based Devices(E-series)?

Tiano,
I will try to better explain the paragraph on LabVIEW. The original paragraph reads ...
"While in a loop for continuous pulse train generation, make two calls to Counter Set Attribute.vi to set the values for "pulse spec 1" (constant 14) and "pulse spec 2" (constant 15). Following these calls you would make a call to Counter Control.vi with the control code set to "switch cycle" (constant 7). The attached LabVIEW programs demonstrate this flow."
You can make two calls to Counter Set Attribute or you can make a call to Set Pulse Specs which, if you open this VI, you will see that it is just making two calls to Counter Set Attribute. What you are doing with the Counter Set Attribute VIs is setting two registers called "pulse s
pec 1" and "pulse spec 2". These two registers are used to configure the frequency and duty cycle of your output frequency.
The example program which is attached to this Knowledge Base demonstrates how to change the frequency of a continuous generation on the fly. Why continuous? Because changing the frequency of a finite train would be easy. When the train completes it's finite generation you would just change the frequency and run a finite train again. You would not care about the time delay due to reconfiguration of the counter.
If you would like to change the frequency of the pulse train using a knob, this functionality will have to be added in the while loop. The while loop will be continuously checking for the new value of the knob and using the knob value to set the pulse specs.
LabVIEW is a language, and as with learning all new languages (spoken or programatic) there is a lot of learning to be accomplished. The great thing is that LabVIEW is much easier than mo
st languages and the learning curve should be much smaller. Don't fret, you'll be an expert before you know it. Especially since you're tackling a challenging first project.
Regards,
Justin Britten

Generate two pulses train with difference phase

Hi'
Spec:
LW 7.1
Daqmx
NI PCI 6602
freq 300kHz
I want to generate two pulses train with two counters with a difference phase between them (change by user)
Thanks

Duplicated thread.
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Mathieu R.
  CTD - Certified TestStand Developer / Développeur TestStand Certifié
  CLAD - Certified LabVIEW Associate Developer

Can the sd order generates the cs service order automaticlly?

Hi,All
I have a querry regarding the integration of sd and cs module.can the sd order generates the cs service order automaticlly?
if can,how to set the sd order to actualize the function?
thanks in advance!

Hi,
Actually in Case u r using repair order then
U first create service notification IW51
then u nned to create a repair order (Config setting is in SPRO --- Folowon actions in Service notifcation, fn modules assigned here)
After u create a repair order
U get repair service metrial via mat determination
maintain in VB11 -- u nnede to maintain service product and task list for it and this linked to main tiem in mat det
Now u get repair order with mat
then do PGR via VRRE
then u can goto sales order and rasie a service order...
Customising maintained for Service order types in Customising
U can run std in SAp and c , then check the onfig settings
Reward if useful
Krishna

How to continuously generate a pulse train with variable frequency

Dear all,
I am trying to use NI-USB 6259(BNC) to send Pulse signals to conduct position control of a servo motor with labview. The position control of servo motor follows these rules:
The number of the pulse train determines how many degrees the motor rotate ;( e.g. the angular position of motor)
The frequency of pulses determines how fast the motor rotate; (e.g. the speed of motor rotating)
The digital determines the direction of rotation of motor (e.g. clockwise or counterclockwise)
My question comes when I need to continuously generate a finite plus train signal in a period of time. Below is a sample:
Time(s)
Number of pulses
Direction of rotation
(1 is clockwise, 0 is counterclockwise)
Frequency
0-1
923
1
923hz
1-2
3540
0
3540hz
2-3
1751
1
1751hz
3-4
2663
0
2663hz
4-5
353
0
353hz
5-6
1017
1
1017hz
6-7
3436
1
3436hz
7-8
302
0
302hz
8-9
1513
1
1513hz
9-10
570
1
570hz
Here is the explanation of this table, the motor keeps rotating in clockwise direction during 0~1s. When the time reaches 1s, the motor just complete the rotation of 923 pulse signals. And then the motor starts to rotate in counterclockwise direction during 1s~2s. When the time reaches 2s, the motor just complete the rotation of 3540 pulse signals. So we can see that the rotating speed of motor in 0~1s is different from the speed in 1s~2s. Namely, the frequency of pulse signal in 0~1s is different from the frequency in 1s~2s.
I have already use the counter output of DAQmx, it just can generate pulse signal with certain numbers and certain frequency in one time. The attachment is the vi which can generate a finite digital pulse train from a counter output channel and the frequency, duty cycle, Initial delay, and Idle state are all configurable.
How can I continuously generate a series of pulse train with varying numbers and frequencies during a certain period of time.
Thank you very much for your help!
Solved!
Go to Solution.
Attachments:
Counter - Finite Output.vi ‏57 KB
Finite output.png ‏13 KB

Hi aacuna,
Thank you for your reply!
I already checked that article. The frequency in that Vi can change dynamically, but the method of adjusting the frequency is ‘manual’ .Below is the front panel of that Vi. When the Vi is running we can change the frequency by press the button.
Time(s)
Frequency
0-1
923hz
1-2
3540hz
2-3
1751hz
3-4
2663hz
4-5
353hz
5-6
1017hz
6-7
3436hz
7-8
302hz
8-9
1513hz
9-10
570hz
Thank you！

Generating interruptable pulse train

I have a PCI6071E board and I'd like to use its counters (DAQ-STC) as a triggered pulse generator as follows.
I get an 50% duty cycle pulse F ~ 10Hz (F is inaccurate). On each lo->hi edge I want to generate a train of 50 pulses using the counters.(*) If next trigger edge occurs before the train finishes, I'd like to immediately reset the current train (the output should be 0) and to start next one.
There is an example of how to generate a finite-length train, but it fails to treat the (*) condition. As far as I understood, there is no hardware "reload" to the DAQ-STC counter. Is there another solution ?
If it's impossible, is there any cheap dedicated counter board with an RTSI bus and an option to perform a hardware "realoa
d" ? Any other options to solve this problem ?
Thank you,
Sergey.

Hello;
Unfortunatelly, you can't accomplish that task with the STC counter chip. The STC counter doesn't support triggering operations.
You will need to migrate to one of the 660x counter boards so you can catch the trigger edge.
As far as the hardware reset is concerned, there is no National Instruments device that support that operation. Once the pulse generation is started by the trigger pulse, it will run freely in hardware until it generates all pulses of the train. In case another trigger pulse comes while the pulse train is being generated, it will be ignored by the hardware.
Regards
Filipe A.
Applications Engineer
National Instruments

Generating two pulse trains with on a PCI 6602 (2 CWPulse)

I am writing an application that should generate 2 pluse trains. I'am using ComponentWorks 3. I've tried to use 2 CWPulse but after configuring the 1st, i cannot start the other one because "too many controns are configured for this DAQ device".
Do you know how to use 2 CWPulse with a 6602 device ?

Dear Sir,
If you need to use two CWPulse components you will not be able to set a finite number of pulses to be generated. When you set the component to produce a finite number of pulses, it actually uses two counters to perform the operation. One is used to generate the pulses and the other one is used to count the pulses that are generated. You can use multiple CWPulse components as long as the pulse type is set to continuous on both components.

Can the DAQPad 6052E be powered by 12V?

I am setting up a field audio DAQ. I am interested in using the DAQPad 6052E with a laptop on a boat. Is it possible to run the DAQPad off a 12 volt deep cycle battery?
If not would alternatively using a 120 VAC inverter cause a lot of noise to leak in? Any help would be greatly appreciated.

Hello anu25,
The specifications of the DAQPad-6052E manual state that it can take 9-24 VDC and requires 20 Watts of power (see page 14 of the specifications manual linked below).
NI 6052E Family Specifications
http://digital.ni.com/manuals.nsf/websearch/EAA4406C446E621B86256DA20074054C?OpenDocument&node=10931_US
So, if the 12 V battery can supply enough power, it should work for you.
There is a battery pack and 120 VAC charger option for the DAQPad-6052E that would be an alternative as well.
NI DAQPad-6052E for FireWire
http://sine.ni.com/apps/we/nioc.vp?cid=10931〈=US
I hope this helps. Let me know if you have any additional questions.
Regards,
Todd D.
NI Applications Engineer

What is the default state of the "Ready" LED on the DAQPad-6016?

I am having trouble pinpointing why my .vi will not show me the status of an input. The "Ready" LED on my DAQPad-6016 continues to flash and I receive the 200324 error. This occured when I was resetting the power switch every few seconds when trying to troubleshoot. In my MAX, the unit is shown with the red "X". Resetting the power does not clear it.

Zack,
Thank you for contacting National Instruments. Which one of the following states are you seeing? The following is from the E Series Help:
The DAQPad-6015/6016 devices have two LEDs labeled ACTIVE and READY. The ACTIVE LED indicates activity over the bus. The READY LED indicates whether or not the device is configured. The DAQPAD-6015 BNC and mass termination devices have a READY LED only. The following table shows the behavior of the LEDs.
ACTIVE
READY
DAQPad-6015/6016 State
Off
Off
The device is not powered.
Off
On
The device is configured, but there is no activity over the bus.
On
On
The device is configured and there is activity over the bus.
Blinking
On
Off
Blinking
The device is not configured and there is no activity over the bus.
On
Blinking
The device is not configured, but there is activity over the bus.
Blinking
Blinking
Blinking simultaneously
Both LEDs blinking in the same pattern simultaneously indicates an error state. You must power off and power on your device.
Blinking alternately
If both LEDs blink in the same pattern alternately, contact National Instruments.
I recommend downloading and installing the NI-DAQmx drivers for that device to make sure you are using the latest drivers. Also, try the device on a different computer (if possible). Let us know your results after this.
Michael P
National Instruments

Can the DAQPAD-6016 generate a pulse train?

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