How to use counters

I have a little problem. I need to use this formular in my query. I am working on Service orders (CS) based on a Technician.
Hours per Callout = Total hours/ Number of Jobs
I'm not sure how to get the Number of Jobs for a technician. I thought about using counters but not sure how since the counter (1ROWCOUNT) is in the ODS and I'm running the report from a cube which doesnt have the counter.
Any step by step advise would be appreciated

Hi Sriram
Actually, i am still creating the design doc and I know 1ROWCOUNT is usually in the DSO by default. But I want to push the data into a cube. But I'm not sure if i should just add the counter as you suggest. Also, I saw this document and not too convinced how this works in relation to what I want. What I want to do is just count the number of occurences for the technician. Does it make sense?
How to
Count the occurrences of a characteristic relative to one or more other characteristics

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I have inputs from an optical encoder {pulse train} and i need to count the number of pulses for a short period of time to estimate the speed of the DC motor. Could you please tell me how to use the counters in PCI 6251 DAQ. I found something on DAQ STC, whichs says the input pulse should be connected to PF0 {ctr source}, but i have query where do i get the output {number of pulses counted in a particular period of time}.
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Hi bsnr,
Thanks for the post!
In MAX (Measurement and Automation Explorer), if you find the device (DAQmx devices) and right-click, you can select pinouts - which should contain a table telling you which pins are what PFI lines.
Then, in labVIEW, you need to generate some code to use the choosen coutner in a task to count digital edges. If your not sure on this, go to Help>>Find Examples>>Hardware I/O>>DAQmx>>Counters.. and take a look at some of the code provide.
ps. It seems (maybe just your wording), but your expecting the counter output pin to provide the number of counted edges - this isn't the case.
Please let me know what you think?
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Kind Regards
James Hillman
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Loughborough University UK - 2006 to 2011
Remember Kudos those who help!

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?
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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).
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Using Counters with NI - cDAQ 9172

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I used to originally run a program with NI 6009 and used counters in LabView to measure vehicle velocity. I had 0-5 magnetic sensor connected to the PFIO terminal. I was essentially counting a falling edge and it worked fine in the NI 6009 module. But when I switched over to the NI 9206 (Fuel Cell) module having the same speed connected to the PFIO termainal I had problems using the counters. Does anybody have any suggestions as to how counters are to be used in the new cDAQ chassis. I found an article in the forums on how to go about selecting internal channels to show up the counters. But even after being able to select one I had no response on the program. Any ideas on waht could be tried to make the counters work?
I have also attached my program if that helps.
Thanks!
Attachments:
Eride_Main.vi ‏108 KB

Hi Rahul,
I want to correct my previous statement. I believe that the following example will show you how to perform a counter task with the 9205.
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How to use PCI6602 4-5 cards run simultaneous via RSTI?

I use them as a simple event counter all of them must start and stop count at the same interval of time.
Now I write my VI as attachment,I already have RSTI bus,but don't know how to use it.
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Hi credo,
First here's a few comments on what I see in your vi:
1. The loops to configure the counters are the right idea. You need those 32 distinct task id's to perform 32 channels of counting. You've already gotten over one key hurdle!
2. There's quite a bit of duplicated code to handle each of the 4 boards separately. You could make sub-vi's out of these code chunks and clean up your diagram considerably.
3. You're programming the counters for "simple" (unbuffered) event counting but are then reading them as though they are buffered. This won't work.
I can't tell whether you need buffering or not. It doesn't look like you are trying to use most of the buffered data. However, buffering *can* still help make sure that all the counter values you read represent the same instant in time. Can you describe your needs more exactly?
4. If you buffer the reads, you'll need to supply a "Gate" signal, i.e., a sampling clock. If you can spare a counter to generate one, then this alone can synchronize all your readings. Otherwise, you'll also need to configure all the counters to start on a digital trigger.
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That's plenty enough to look into for now. I would strongly recommend that you first try to work out the programming syntax and flow using several counters from 1 board. When you get it working, you can create a sub-vi from it and reuse it for the other boards. Then we can start talking about RTSI...
One little-known fact about RTSI is that it can actually be handy even when programming a single board under traditional NI-DAQ. I've used it frequently to avoid the need to hardwire connections for timing signals. I'd again recommend that when you're ready to deal with RTSI, that you first try it out on a single board. If it works for 1 it'll work for the others.
Finally, you may want to consider migrating to DAQmx. Especially if you don't have a lot of code invested into counters under traditional NI-DAQ yet. NI has been nudging us toward DAQmx for quite a while now, and it'll handle the RTSI stuff pretty much auto-magically.
-Kevin P.

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