Internal counter/timer PCI 6259.

I need to create a high digital pulse and them wait a certain time (I choose) that the device must wait(low level) until it creats a new high state level. This wait time must use the PCI's clock as base.

Krsone, the example you sent didn't open here because I have only LabView 7.1 here in the Laboratory.
Wayne, I've searched in the examples and I didn't find what I want or something related.
What I did is create a boolean array and put it to send each position in a specific frequency. For example I chose a frequency
of 10Mhz and create a boolean array of 20000 positions. In the first position and in the last I put a "High Level data" and in
the others a "Low Level data", so I achieved a sinal that sends a High level signal and after 2 sec send another one.
To change the time between the high level states I must change the boolean array and for it I have to stop the vi.
What I want is a vi with a configurable time between these 2 high states while the vi runs.

Similar Messages

How to use counter using PCI 6259

Hello, users,
I have a PCI 6259 board and use Labview 7.1.
I'd like to repetitively count the photon signals at 10ms integration time. I want cumulative counts in every 1 sec (1000ms) (or 1 min (60000ms)) And I want to save counts into txt.file which is open in excel program.
I am a beginner to use counter using PCI 6259 board.
1. Could you explain default NI-DAQmx counter terminals, i.e., CTR 0 SRC, CTR 0 GATE, CTR 0 AUX, and CTR 0 OUT?
2. How do I use them or how can I connect to count TTL pulse using PCI 6259?
3. As I mention my purpose above, which example is the first step to start working my purpose?
4. If you know good example, could you tell me about that?
5. If anyone has labview example which is similar to my aim, could you give me some tips or your examples?
Any hint, comment or advice would be appreciated.
Thank you so much for your response.
Leek2

I have never used the PCI 6259 but have used counters many times with labview, the coding should be the same independent of the board. What you want to do is finite buffered edge counting using a internal clock. The best way to do this is to look at the examples programs and use the express vi to get started, then you can use this code to customize your program exactly as you need.
To address your questions:
1. CTR0 means "counter 0" the name of the physical resource sometimes listed at GPCTR0. Each counter has 4 connections to the outside world:
source "src"(for counting input TTL signals),
gate (for synchronizing to external clocks and edges),
out (for pulse-train out operations)
and aux (specialty operations such as up/down counting and encoding)
2.For event counting with internal clocking you will only use the src this is the input from the signal you wish to count (ie PMT discriminator for photon counting).
3,4,5. Look at the count edge examples, there isn't one that does exactly what you want but I have done this with a 6602 (it has e counters) where I use one set of counters to set up a finite pulse train in your case 1000Hz with 1000 pulses, and another counter to edge count on an external pulse, with the source of this pulse routed from the out of the other counter. Then you can start the task and read when 1000 samples are in the buffer (about 1 second later).
Hope this helps,
Paul
Paul Falkenstein
Coleman Technologies Inc.
CLA, CPI, AIA-Vision
Labview 4.0- 2013, RT, Vision, FPGA

9402 - Internal counter/timer?

Hello,
Does the NI 9402 have an internal counter/timer?
The product description page on the web states that it does, however the manual for it doesn't mention a counter/timer.
Other web searches only reference a counter/timer when installed in a chassis.
If not, can someone recommend a USB DAQ for monitoring the rate of 4 pulse streams (5V, up to 100kHz)?
Thanks
Erik
Solved!
Go to Solution.

Hey Erik,
The documentation is a little unclear- the important thing to note is that the 9402 cannot be used with a USB sleeve: NI C Series Module Compatibility Chart. I would recommend visiting the DAQ homepage and searching by bus and counter number. It looks to me that you could possibly use the USB 6501 which has 24 DIO lines, 1 counter, and can read in at a rate of up to 5MHz (and it's an easy $99). If you need a little more that's still close to your price range, you might want to consider upgrading to the swankier USB 6210. Hope that helps!
aNItaB
Applications Engineer
National Instruments
Digital Multimeters

Writing to digital port disrupting counter on PCI-6259? (nidaqmxbase)

Hello,
I've set up my PCI-6259 with an angular encoder counter, as per the C code example at http://zone.ni.com/devzone/cda/epd/p/id/5735
This appears to work great, but I would also like to use my PCI-6259's digital lines to control a TTL switch on the encoder it's measuring (among other things). If I set up a separate task in the same program and install a new DOChan to the task, it works great: I can control the TTL and measure the encoder position at the same time.
However, I would like to be able to control the digital lines, e.g., via a script, while leaving the encoder readout running continuously. I tried running the angular encoder counter example code, and while it was running, I ran the dio/writeDigPort example.
First of all, the writeDigPort took about 3 times longer than usual to run. It wrote to the digital line successfully, but as soon as it had, it corrupted the counter somehow. The angular encoder example began to spit out garbage, rather than the measured angle.
Is this just a limitation of nidaqmxbase, wherein I cannot use the PCI-6259 resource from multiple processes? I can imagine this being the case, since I think the counter setup is using a DMA.
Or is there a workaround? Any advice is much appreciated, thanks!
-Chase

I think what was meant is that DAQmx Base is not multi-thread safe. From the readme:
NI-DAQmx Base is not multi-thread safe. In LabVIEW, use the error cluster to
force execution order. In C, use only one thread to make API calls; especially
for task/channel creation and deletion.
So, if using DAQmx Base, all of your functions should be in the same thread (i.e. don't make parallel calls to the driver).
Having said this, I notice you're using the PCI-6259 which is supported in DAQmx for Linux. You didn't mention what OS you're using, but if you are able to use the full version of DAQmx I would recommend doing this. DAQmx is multi-thread safe, and provides more functionality and better performance than DAQmx Base.
Best Regards,
John Passiak

Slow counting time (PCI-6601)-Single period measurement

Dear friends
I wish to count TTL pulses from my device(Avalanche Photo Doide) by using PCI-6601 for a certain time. Thus, I tried to use "Measure Period.vi" with "for loop" configuration.
And the gate frequency from another counter is 100 Hz ( 10 ms time binning). Unfortunately, the acquition time is so slow considering binning time (10 ms).
We tried to modify this vi and found that the acquisition speed cound be fast when we remove "while loop" with "0" counting. As I know, the "while loop" function is to check whether arming acutally occurs, which is quite questioning why this kind of function exist even though the control code already do it.
Can you guys help me ? ^_^

Duplicate
Ryan Verret
Product Marketing Engineer
Signal Generators
National Instruments

Using timer/counter with PCI-6221/USB-6210 to control timed-loop VI

Dear all,
I need to ask about two devices and one of their functionalities, PCI-6221 and USB-6210. For our NI-based system, we need to control some timings in a Timed-Loop vi, for that currently we are using PCI-6221 and we give external TTL signal (at 1 kHz) to it,
recenntly we need to make some changes and for that we found USB 6210 DAQ to be more suitable, but we need to clear ourselves on some specific things.
Can the counter/timers functions available in the either PCI 6221 or USB 6210 can be used to control the Timed-loop VI by giving external clock or by using their own internal clock source?
Although we are using external clock with the PCI 6221 but we want to know about the usage of their internal clock, also are controlling timed-loop also possible for USB-6210
Also... What if we use the RTOS, are they still able to control the timed-loop VI without giving any 'EXTERNAL CLOCK' and using the internal clock sources of the DAQs
Waiting for reply,
Bests,
RaJaf
Solved!
Go to Solution.

Ben,
I having read previous email which I send earlier with general overview, we discussed in more detail within our team and I am giviing the specific answers.
Please check in RED the most recent answers. Blue are the questions/suggestions by your side.
1.    Using Internal hardware clock of PCI-6221 would enable us get rid of external clock, but how to divert the internal hardware clock to the current settings. Any idea (can you provide us with some reference manul for otherwise). I mean is there some flag-bit etc. or VI
2.       Is it also meant that with the installation of RTOS the timed-loop can directly get the timing source from the internal hardware clock PCI-6221? --- How???
3.       In order to make desktop to work as RT system, what is the hardware (motherboard, processor, etc..) requirement? What are the LabVIEW modules (specific name) that needed to be installed? Our platform is LabVIEW 8.6. (Currently we have windows-7 with i7 core processor)
What kind of application are you intending for this system? ---- high-speed laser scanning system.
Are you most concerned about accuracy, speed, or responsiveness? To control the laser mirror scanner to move at 1 kHz or 2 kHz speed. On the other hands, using PCI-5105 (128 MB memory) as a DAQ for real-time/on-the-fly data processing.
Bests,
RAJAF

Start Counter Output on a Analog Trigger in the PCI 6259 Mseries board

Hi,
My question is regarding how to use Analog Triggering to start a counter in the PCI 6259 M-series board.
I have attatched a program here
'Mult_Device_Digital_Analog_Out_on_Analog_Trigger.vi'
and I'll explain my problem regarding this program.
I've tried to include all the details about the program in the documentation for the VI, but what the program
does is essentially output a set of digital and analog patterns as specified by an end user, and at times
specified in the front panel.
Problem 1.
I wish to start the whole operation on a analog trigger signal, in the program its the boolean "Line Trigger",
but I get an error saying that trigger type is not supported, when the M Series board manual clearly says it can be done.
Is there something wrong with my program ?
Thanks.
Shomu
Attachments:
Programs.zip ‏101 KB

Shomu
Admittedly, it might take a little time to find the documentation, but it is there. Also, the error you are getting indicates the proper trigger signals to use. In the help look at the analog Triggering Considerations for E Series, M Series, and S Series.
With that being said the easiest thing to do is to setup an Analog Input task configured to start on an Analog Trigger. Then, setup a digital edge trigger for the Counter task. The signal you are going to want to look for is the Analog Comparison Event. This signal won't show up by default in the list. What you need to do is right click on the trigger source constant or control and select I/O Name Filtering. Then check Include Advanced Terminals. Once you have done this you can select the Analog Comparison Event
StuartG

Can I use Intel 815EP AGP 4X Pentium and plug in 5 Nos NI 6002 PCI counter Timer cards, instead of going for expensive PXI based solution? Hope there will be no degradation in performance - when used for constructing an Energy Meter test Bench.

I was recommended to buy NI 6002 with PXI series, 5 Nos cards($875x 5 nos), and additionally a PXI rack costing about $ 2195 + some min--- card to interface with the computer costing another $ 875. Compare this with $ 675 x 5 Nos for 5 Nos PCI based NI 6002 + some cablesa nd connectors for synchronisation.
First option is extremely expensive. But NI marketin manager will be glad that he sold more harware. But I want the truth. Why can't Intel 815 Pentium board be used?

I am addressing the question if using PCI-6602s instead of using PXI-6602s will affect the performance, and the answer is NO. 6602 counter/timer devices comes in two different form factors, PXI/Compac PCI and PCI. The accuracy and performance is the same for both the PXI and PCI 6602s. However, using PXI solution will allow users an easier time with synchronization since that is the provided in the backplane of the PXI chassis. Additionally, if you ever need a higher accuracy solution you can add the 6608 device which has 75 parts per billion ppb vs 50 ppm of the 6602 devices. With 6608 plugged in the second slot of the PXI chassis (the one next to the controller), the high accuracy timebase is automatically shared acrossed the backplane of the PXI chassis which mean
s that other 6602 devices in the chassis will share the same accuracy of the 6608. If the difference in the accuracy is not a concern and you are currently not ready to invest in the PXI platform, then you can go with the PCI 6602 devices.
Best Regards,
June Zhu
National Instruments
Digital and Timing Product Support Engineer

Pci 6259 real time windows target matlab

Hello everyone,
I want to buy 1 NI PCI-6259, 2 Cables(SHC68-68-EPM Cable (2m)) and 2
Connector Blocks (SCB-68 - Shielded).
Would you please tell me do I need another hardwarefor
this product?
I want to this product with Matlab Real Time Windows Target.
Would you please tell me do I need what software for
this product to work with Matlab Real Time Windows Target?
Best regards,
Naser

Hello Olivia
I want to measure impedance of a device.
I want to generate a chirp signal and measure impedance this
device by NI PCI 6259.
My frequency is about 10KHZ to 300KH.
I use Windows xp for this task. I want to use Matlab software.
So, for MAtlab software only DAQmx
driver is needed?
Best regards
Naser

Controlling Counter Timer of PCI6259 from Matlab

Hi,
My Name is Abtin, Im from Germany and i Hope my English is good enough to discribe my Problem. Im using a PCI 6259 Card, and I want to set the general Purpose Counter and Timer from Matlab. But I still dont manage it. have sombody experience with this card and could help me. Im really in trouble i hope somebody answere....
I want to set the Timer as output and use it for triggerung. But how can i access to the Counter??? I dont find no example for Matlab.
Regrads,
Abtin

Hello Abtin,
since you are from Germany i may as well continue in German. NI Hardware kann von Matlab aus mittels der Toolbox angesprochen werden. Unter folgenden Link findet sich eine Kompatibilitätsliste:
http://www.mathworks.com/products/daq/supportedio14005.html
Dort findet sich auch folgender Hinweis:
"Note: Data Acquisition Toolbox supports voltage
measurements on analog input and analog output subsystems. On digital
I/O, it provides static acquisition and control. If using specialized
analog measurement capabilities (such as thermocouple CJC compensation
and IEPE excitation), hardware clocked digital I/O, or the
counter/timer subsystem are valuable to you, please let us know by
completing the form at the bottom of this page"
Nach meinem Wissensstand unterstüzt Mathworks die Counter Funktionen lediglich für einige E-Serien Karten und noch nicht für M-Serien Karten.
Ein Beispeil für MIO Karten unter Matlab findet sich unter folgendem Link:
http://webscripts.softpedia.com/script/Scientific-Engineering-Ruby/Test-and-Measurement/Counter-Example-36128.html
Um die Counterfunktionalität der Karte dennoch nutzen zu können, ist es möglich die DAQmx Treiber dlls auch direkt aufzurufen.
Um dazu eine Hilfestellung zu erhalten währe es sinnvoll bei der Installation des DAQmx Treibers die C-Unterstützung zu aktivieren. Dadurch werden sowohl die C Beispiele als auch die Hilfe zu den DAQmx Funktionen installiert. Unter "Start>Programme>National Instruments>NI DAQ>NI DAQmx C Reference Help" kann die Hilfe aufgerufen werden. Sie ist als Basis für die dll Aufrufe in Matlab zu sehen.
Viele Grüsse
Wetzer

Why is my executable VI not working with a PCI-6259?

I have bought a PCI-6259 which has referencing trigger capability. I wrote a VI for acquiring the data and tested the VI on my PC that has the full developmental LabView 8.2.1 package installed. The trigger is a 1 volt level that is triggered by a potentiometer ranging from 0-5 volts that I control manually. The VI works exactly how I want it to, however, now I want to use the Application Builder to create an executable to distribute the VI to the testing station PC. I then removed the PCI-6259 from the developmental PC and installed it in the testing station PC and loaded the executable VI along with the LabView 8.2.1 Run Time Engine. I open the program and it runs but I cannot get the program to trigger using the same potentiometer so it runs in an infinite loop. I'm pretty sure everything is loaded correctly and the only difference between the two stations is that one has the full developmental LabView package and the other is an executable. Would anyone know why my executable is not working?
Thanks,
Matt Kostyal

Hey Matt,
Thanks for contacting National Instruments support. One thing I'd like to see you try in the DAQ diagnostic utility. I do not suspect a bad card, but it is an executable that we can try that we know was properly built. If it doesn't work that will give us some more insight into the problem if it is truly hardware or software.
Let me know what you find.
Regards,
Kenn North
Senior Product Manager - Search, Product Data
http://ni.com/search

Incremental encoder: reset counter on pci 6014?

I want to connect an incremental encoder with A, B and Z to a PCI 6014 card. I found some VI's for counting A and B (DAQmx->Counter->Count Digital Events; DAQmx->Counter->Measure Posititon) . However I can't figure out what to do with the Z. Is there a way to reset the counters by Z? (I am using labview 2009)
Thank you very much!

Sorry, my fault. I didn't see you have an E-Series device.
Resetting your counter with a digital trigger is possible for Counter/Timer devices but not for your PCI 6014.
You can reset the counter with DAQmx by stopping and starting the task again. You could read your Z index on a digital input, if the input goes high (or low) you could reset the counter.
DAQmx: Count Digital Events with Option to Reset Counter
http://decibel.ni.com/content/docs/DOC-6576
I think this is the only way for the PCI 6014. Since you have to go through several software layers, the performance goes down a bit. If it is possible, i would recommend to change to a M-Series device...
Cheggers
Sascha E.
Group Leader Applications Engineering
National Instruments Switzerland

Trouble using the counter on PCI 6025E

Hello,
I am facing a problem with the counter on PCI 6025E. I am trying to count the number of pulses generated by the shaft encoder mounted on the shaft of a motor. I am using a channel from the shaft encoder to count the pulses and generate the line state. So, I have wired the channel to pins 25[line state]and 47[counter]on SCB-100. In my application I am using the count events/time vi from DAQ palette. Every time I run my application I have been getting the error NI 10001 saying that the ordering of the strings is not as expected.

Hi,
The Count Events & Time.vi is typically used with older counter hardware such as the 9513 chip. Your E Series card (6025E) uses a DAQ-STC chip. The best way to count your edges is to open up the example "Count Edges(DAQ-STC).vi which can be found by selecting Help>>Find Examples... and you will find it under the DAQ Counter examples as an DAQ-STC example. Hope that helps.
Ron

Counter/Timer Pulse Train generation

Hello,
I am having some trouble understanding why a particular VI I have isnt working(upper part of image below), I was wondering if someone could give me an idea of the cause from the error message. I have a counter/timer which I am using to generate a pulse train. It works fine on 'Continuous samples' but when I switch it to 'finite samples' I get a 'resource is reserved' error when it gets to the DAQmx 'Play' VI
I made a separate VI (lower part of image) and it works just fine with finite samples. So I am basically wondering what is different about finite versus continous sampling which could cause a resource to be reserved or not. (the board is a PXI 6281 if that matters)
Thanks,
Adam
Solved!
Go to Solution.

You're correct on what the problem is.
For what it's worth, the newer X Series boards (63xx) and 2nd Generation Compact DAQ Chassis don't require the use of two counters for finite pulse generation (although technically there is a paired internal counter to accomplish the finite pulse generation, it's not really evident to the user). These products also have 4 counters available instead of 2.
Best Regards,
John Passiak

Mounting 3 pairs of omron sensor E3X-F21 at 25mm intervals to measure time taken by moving object breaking beams and connecting to 6601 counter/timer card

System is Windows ME Labview 6.1 6601 Counter/timer card. 3 pairs of Omron Photoelectric sensors E3X-F21 are mounted on a flat surface and as the object passes the first pair of sensors it starts timer1 and timer2.
As the object passes the second pair of sensors it stops timer1 and as the object passes the third pair of sensors it stops timer2
We have a known distance between the sensors so we are able to calculate the objects speed and position.
We need a wiring diagram to connect the sensors to the 6601 card.

I think I can describe a method that'll probably be simpler than the previous answer because it won't require any external logic circuitry.
1. Configure two counters for "Two-Edge Separation" measurement, let's say counters 0 and 1.
2. Wire Sensor 1's signal to both AUX-0 and AUX-1.
3. Wire Sensor 2's signal to GATE-0.
4. Wire Sensor 3's signal to GATE-1.
5. Wire each sensors' 'ground' to the appropriate ground pins on your terminal block.
6. Software configure both counters to use "max internal timebase" for a source -- 20 MHz for the 6601.
You can specify the polarity of the transition you care about for both the AUX and the GATE signal, but I'll explain in terms of rising edges for both.
Counter 0 will count time from Sensor 1's rising e
dge until Sensor 2's rising edge. Counter 1 will count time from Sensor 1's rising edge until Sensor 3's rising edge. The count values will be in units of "# of 20 MHz cycles elapsed."
You can probably get a decent starting point on the software using one of the shipped examples.

Internal counter/timer PCI 6259.

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