Connect NI PCI-6602 with NI PCI-6503

Hello,
I want to connect a NI PCI-6602 Counter/Timer with the NI PCI-6503 DIO-Card. The problem is the varying number of pins. (6602->68 pins; 6503 -> 50 pins). Is there a possibility to connect both? Maybe a complete adapter?
regards Thomas

Thomas,
You are correct both cards have male connectors. You could still use the 68M-50F connector if you use a 68-68 cable. Or if you had a 68F-50M then you would need a 50 pin cable. I have found another option, the R6850-D1 Cable(part number 777419-01) . This is a digital cable that was made to use our 68 pin digital devices with 50 pin breakout boxes. It ties the ground lines together and you also loose access to PFI 37,the up/down pin for counter 0, and you loose the +5V line. I think you may want to check the pin mappings to make sure that you really want to connect these 2 boards directly together. When using a 50 pin conversion with the 6602 you will get the following pin mapping:
Pin Number (1-50) 6602 Signal Name
1 PFI_25
2 PFI_28
3 PFI_27
4 PFI_24
5 PFI_30
6 PFI_31
7 PFI_26
8 PFI_29
9 PFI_21
10 PFI_23
11 PFI_19
12 PFI_17
13 PFI_18
14 PFI_16
15 PFI_22
16 PFI_20
17 GND
18 PFI_34
19 GND
20 PFI_35
21 GND
22 PFI_33
23 GND
24 PFI_32
25 GND
26 GND
27 PFI_38
28 GND
29 Reserved
30 GND
31 PFI_36
32 GND
33 PFI_39
34 GND
35 PFI_4
36 PFI_6
37 PFI_0
38 PFI_2
39 PFI_1
40 PFI_3
41 PFI_7
42 PFI_5
43 PFI_13
44 PFI_10
45 PFI_15
46 PFI_14
47 PFI_8
48 PFI_11
49 PFI_12
50 PFI_9
You will loose half of the cards functionality since half the pins (even numbered pins) will be connected to ground on the 6503. It would be easy for you to short lines to ground this way. It would probably be better if you get a breakout box for each card (SCB-50 and SCB-68) and then connect only the lines you want to share between the cards. So in answer to your question, yes you CAN connect then directly together, but do so with caution, and I do not feel this direct connection is the best solution for y
ou.
Hope this helps.
Kevin R

Similar Messages

How to visualise continues Data aquisition from a PCI 6602 with 2121 BNC connector board in C++ ?

Hello everyone,
We are trying to get on the screen the aquired pulses from our PCI 6602 with a 2121 BNC connector board, from several devices. We are able to read the data and save without problem, but we cannot look at it while we are measuring. Anybody has an idea to how program this in C++ ? Any suggestion is welcome!
Thanks for the help

Hi,
try to look for some example programs and Tutorials:
Examples Results
http://search.ni.com/nisearch/app/main/p/bot/no/ap/tech/lang/en/pg/1/sn/catnav:ex/q/DAQmx%20C%2B%2B/...
Tutorials Results
http://search.ni.com/nisearch/app/main/p/bot/no/ap/tech/lang/en/pg/1/sn/catnav:tu/q/DAQmx%20C%2B%2B/...
You should also have a look at the "C Reference Help" which is installed with the NI DAQmx driver.
Acquire N Scans (Visual C++ 6.0, CW++, NI-DAQ)
http://zone.ni.com/devzone/cda/epd/p/id/207
Continuous Analog Acquisition with Producer Consumer Architecture in C#
https://decibel.ni.com/content/docs/DOC-4253
Good Luck!
Matteo

Count digital events on a Counter with pci-6602 with callback on CVI

Hi,
I'm using a PCI-6602 card with CVI 8.5 and I need to trig on event.
On every pulse I received, I need to do some actions like increasing a counter, send a message on Rs232 etc.. I don't want to do any loop checking that the counter value has changed. I would like to use a callback to execute this code only on the edge or counter value event.
My problem is that I don't know which function can do this. Is there any way to get an event on a pci-6602?
Thanks
James
Solved!
Go to Solution.

Hello.
It's completely possible to create a callback that will allow you to do what you want when a edge will occur on an external signal you define.
To do this, you can for exemple create a counting edges task that will use one of the 6602 counters,and the set your external signal to be the source of your sample clock.You'll then be able to register a callback with the function DAQmxRegisterSignalEvent, and your callback will be called each time an edge will occur on your specified sample clock source.
Here's 2 links that explain the events in DAQmx and how to handle them in CVI. The example ReadDigChan-ChangeDetectionEvent.pr that ships with DAQmx examples (Hardware Input and Output<<DAQmx<<Digital measurements) can be very useful to understand how to do. This example creates a signal event callback to detect change detection for digital inputs.
Regards.

Connect PCI-6602 to relay

Hello,
I am absolutely new to Labview and the PCI-6602 card. What I would like to do is to use Labview to control a relay through the PCI-6602 DAQ card. I am of course using the CB-68LP connector block to make the hardware connection.
Since I want to control a relay with a 0-5V TTL signal to open and close, I guess I am supposed to send a digital signal to the DIO lines on the PCI-6602. However, could someone explain to me if there is an example VI that can do this?
Moreover, what are the pin numbers on the CB-68LP connector block where the actual digital signal will come from? This is not clear from the manual. I would first like to measure it on a voltmeter before connecting an actual relay to it.
Eventually, there will be three relays connected and each of them will in turn be controlling a solenoid valve. In some cases, two of the relays should open at the same time while the third one is closed. At other times, only one relay will open.
I appreciate your feedback in advance.
thank you.

Hi,
I have attached a modified version of the example which only outputs on one line. Notice the change at DAQmx Read.vi. The output will remain high if you stop the program.
Please clarify if you have further questions.
Pelle S
District Sales Manager
National Instruments Sweden
Attachments:
Write Dig Chan1line.vi ‏28 KB

Generate two different pulses or more continuously with a PCI -6602

I have a PCI-6602 and Labview 8.0. I need to create a complex wavefrom output and I don't know how to create this waveform with the 6602, I know that I can create this pulse format by using the Agilent Pulse Generator but I would like to use the National Instruments. If somebody has an idea about how many counters and the physical connections that I need, also about how can I use labview to generate a complex waveform output.
I've attached the waveform that I need to generate continously and I hope that I can use the PCI-6602 for this purpose.
Attachments:
Pulse format.doc ‏24 KB

This is a duplicate post, for the main post please see:
NI Discussion Forums: How to generate two diferent pulses and re-trigger such pulses continously
Regards,
Dan King

Reading encoders with PCI 6602

Hi,
I'd like some help to understand correct general purpose counter (GPCTR)
calling sequence.
Once configured with a GPCTR_Control (..ND_PROGRAM)call, it is not clear
what should be done, if at a later stage one would like to set (write) a
specific value to the counter. I suppose the counter should be un-armed (with
a GPCTR_Control (..ND_RESET)call). In this case is the previous configuration
lost (things defined with the Set_Application and Change_parameter calls)
If negative, what is the shortest sequence call to set a new value to a counter
already armed ?
Please mail the answer to
[email protected]
Thank you

Hi Sweety,
What type of measurement do you want to make with the servo motor (edge count, frequency, pulse width, etc.)? What wires are output from the servo motor? Depending on the answers to these questions it will give more information into whether you need to use the gate terminal or just the source.
I would recommend to review the User manual for the PCI-6602 (referenced below) because it has information on the pinouts (pg 31) and different application considerations. Also, the M series user manual discusses some of the different measurements (in the counter section) and how to make the proper connections.
660x User Manual
http://www.ni.com/pdf/manuals/372119a.pdf
M Series User Manual
http://digital.ni.com/manuals.nsf/websearch/2025C99AB0614F9E8625748000577B9A
Regards,
Jordan F
National Instruments

Error -200141 when doing buffered events with DAQmx and PCI-6602

When doing buffered events with DAQmx and PCI-6602 I get error 200141 - Data was overwritten before it could be read by the system.
This error is generated ONLY with random inputs >200/sec.
My setup is :
DAQmxCreateCIVCountEdges(taskhandle,"Dev1/ctr3"....
DAQmxCG+FGSampClkTiming(taskhandle,"/Dev1/FPI35",...
DAQmxSetCICountEgdesChan(taskhandlem,"", "/Dev1/80MHZTimeBase")
DAQmxSetChanAttribute(taskhandlw,",",DAQmx_CI_DataXferMech,DAQmx_Val_DMA,0);
Can somebody help ?

i'm getting the same Error-200141, while reading semiperiods. (Meas_Buffered semiperiod continous)
while loop ex.rate seems to be pulsewidth*no.Samples to read. in my case PW=60ms
Input buffer size measured with Property node= 10000
why this error happens?? i cant use any mode other than implicit timing for semi-period measurement right??
more info: all the ai channels are used ~ 16 differencial.
i found one solution which is _ reinitializing the whole task if an error occur. is this the right way??
Kudos always welcome for helpful posts
Attachments:
Counter_1_Meas Buffered Semi-Period-Continuous_main_lv09.vi ‏34 KB
SemiPeriod_Reconnect Counter on Error.vi ‏35 KB

Genral How do I get syncronized encoders to work with a PCI-6602

I am new to the DAQmx and need some general help writting VB code that works.
I can get some things to work, but others don't work at all and I don't have enough knowledge of these drivers to get up the learnign curve hump.
I wanted to post this as a follow-up
to the thread:
http://forums.ni.com/ni/board/message?board.id=40&message.id=5430&query.id=215100#M5430
But I couldn’t figure out how.
Anyway, my problem is that I will
eventually have to do much the same thing as the above thread with two encoders in
sync.
I have a pci-6602 card, and my code
snippet is at the bottom The 6602 doesn't have the analog in to syncronize to like the thread above
(yes, it is in Visual basic
6)
I can’t figure out the
DAQmxCfgSampClkTiming.   Why do I want to have a sample clock at all?   (okay,
when I have two channels synced I do – but this sample I want to get working and
I don’t see why)?
Can’t I just get a new counter value
with each quadrature input change?   (That’s what the DEV/PFI39 is, the same as
encoder channel A )
Okay, so hopefully you tell me how
to get that to work.
Next question: What can I use for
the DAQmxCfgSampClkTiming when I am doing two channels in sync? Nothing seems
to work, and I have tried a bunch of things.
Brynn
Rogers
DeltaTech
Controls
952-403-7400
x431
//// code that doesn't really work. "Dev1/PFI39" is the channel A encoder input, I just want new data whenever the encoder changes (for now)
    ' DAQmx Configure
Code
    DAQmxErrChk
DAQmxCreateTask("count", TaskHandle)
    TaskIsRunning =
True
    DAQmxErrChk
DAQmxCreateCIAngEncoderChan(TaskHandle, "Dev1/ctr0", "",
DAQmx_Val_EncoderType2_X4, 0, 0#, DAQmx_Val_EncoderZIndexPhase1_AHighBHigh,
DAQmx_Val_AngleUnits2_Ticks, 500, 0#, "")
    DAQmxErrChk
DAQmxCfgSampClkTiming(TaskHandle, "Dev1/PFI39", 1, DAQmx_Val_Rising,
DAQmx_Val_AcquisitionType_FiniteSamps, samples)
    'DAQmx Start
Code
    DAQmxErrChk
DAQmxStartTask(TaskHandle)
    ' DAQmx Read
Code
    DAQmxErrChk
DAQmxReadCounterF64(TaskHandle, -1, 0.05 * samples, data(0), samples, ReadCount,
ByVal 0&)
    ' All done!
StopTask
    'DAQmxErrChk
DAQmxStopTask(TaskHandle)
    'Stop task isn't needed because
Clear Task also stops task
    DAQmxErrChk
DAQmxClearTask(TaskHandle)
Solved!
Go to Solution.

Okay, Here is the working routine to get syncronous data from two encoders, and it seems to work okay.
   I have this working with my two 2000 CPR encoders, we'll see how it works when I get the 500,000 CPR encoders later.
The three big problems that caused it to not work were:
1)   Theduty cycle argument for the createCOpulsechanfreq task needed to be between 0 and 1. I had '50.0' before, it works when it is '0.5'
2) The sample timebase that I used (ctr7) needed to be started before either of my two angle encoder tasks were created
3) The "dev/PFI8" string needed to be changed to "/dev/PFI8". I don't really understand why, but that was what seemed to fix it all.
So this question has been answered...    Now I have a different problem while reading 8 PWM values at once with the Semiperiodcounter, which I will post in a new a different thread.
Thanks!
'''''''''''''''''' Working code here
Public Sub Aquireposition(samples As Long, data0() As Double, data1() As Double)
Dim BaseTaskHandle    As Long
Dim encoder0TaskHandle    As Long
Dim encoder1TaskHandle    As Long
Dim TaskIsRunning As Boolean
Dim ReadCount As Long
Dim strCounterString As String
   On Error GoTo ErrorHandler
    DAQmxErrChk DAQmxCreateTask("base", BaseTaskHandle)
    DAQmxErrChk DAQmxCreateCOPulseChanFreq(BaseTaskHandle, "/Dev1/ctr7", "base", DAQmx_Val_FrequencyUnits2_Hz, DAQmx_Val_Level1_Low, 0#, 200#, 0.5)
'Specify continuous timing
    DAQmxErrChk DAQmxCfgImplicitTiming(BaseTaskHandle, DAQmx_Val_AcquisitionType_ContSamps, 200)
     'DAQmx Start Code
    DAQmxErrChk DAQmxStartTask(BaseTaskHandle)
' DAQmx Configure Code
    DAQmxErrChk DAQmxCreateTask("encoder", encoder0TaskHandle)
    TaskIsRunning = True
    DAQmxErrChk DAQmxCreateCIAngEncoderChan(encoder0TaskHandle, "/Dev1/ctr0", "", DAQmx_Val_EncoderType2_X4, 0, 0#, DAQmx_Val_EncoderZIndexPhase1_AHighBHigh, DAQmx_Val_AngleUnits2_Degrees, 500, 0#, "")
    DAQmxErrChk DAQmxCfgSampClkTiming(encoder0TaskHandle, "/Dev1/PFI8", 1, DAQmx_Val_Rising, DAQmx_Val_AcquisitionType_FiniteSamps, samples)
    ' second encoder
    DAQmxErrChk DAQmxCreateTask("encoder1", encoder1TaskHandle)
    TaskIsRunning = True
    DAQmxErrChk DAQmxCreateCIAngEncoderChan(encoder1TaskHandle, "/Dev1/ctr1", "", DAQmx_Val_EncoderType2_X4, 0, 0#, DAQmx_Val_EncoderZIndexPhase1_AHighBHigh, DAQmx_Val_AngleUnits2_Degrees, 500, 0#, "")
    DAQmxErrChk DAQmxCfgSampClkTiming(encoder1TaskHandle, "/Dev1/PFI8", 1, DAQmx_Val_Rising, DAQmx_Val_AcquisitionType_FiniteSamps, samples)
    'DAQmx Start Code
    DAQmxErrChk DAQmxStartTask(encoder0TaskHandle)
    DAQmxErrChk DAQmxStartTask(encoder1TaskHandle)
    ' DAQmx Read Code
    DAQmxErrChk DAQmxReadCounterF64(encoder0TaskHandle, -1, 0.05 * samples, data0(0), samples, ReadCount, ByVal 0&)
    DAQmxErrChk DAQmxReadCounterF64(encoder1TaskHandle, -1, 0.05 * samples, data1(0), samples, ReadCount, ByVal 0&)
    ' All done! StopTask
    'DAQmxErrChk DAQmxStopTask(TaskHandle)
    'Stop task isn't needed because Clear Task also stops task
    DAQmxErrChk DAQmxClearTask(encoder0TaskHandle)
    DAQmxErrChk DAQmxClearTask(encoder1TaskHandle)
    DAQmxErrChk DAQmxClearTask(BaseTaskHandle)
    Exit Sub
ErrorHandler:
'   MsgBox "Error: " & Err.Number & " " & Err.Description, , "Error"
'    mlngPWM_ErrorCount(lngChannel) = mlngPWM_ErrorCount(lngChannel) + 1
    'MainForm.PWMErrorCount = "Errors(" & lngChannel & "): " & mlngPWM_ErrorCount(lngChannel)
    Resume Next
End Sub

Can I connect a SCXI 1000 with PCI 6025 ?

Can I connect a SCXI 1000 with PCI 6025 and use Virtual Banch with PCI 6025 ?

Bley,
Yes, you can use your PCI-6025E and SCXI-1000 with Virtual Bench. Do you have a more specific concern? Have you tried this setup, and it is not working?
Spencer S.

What device I have to connect with my PCI - 4351 to mesure a strain gauge signal?

Hi,
I have a PCI - 4351 with a TBX-68T messuring some termocouples signals, but I want to mesure a strain gauge too, what devices I have to connect my PCI - 4351 to make it possible?
Thanks.
Rafael.
U.F.R.J. Engineering student.
Brazil.

Q: what do i have to do to connect my devices to my jetpack??
A: Jetpacks are wireless only devices. You need to open up your computers wireless network list and select the network being broadcasted by the Jetpack. Once you find the network then connect to it by entering the WiFi password provided on the back of the Jetpack.
Q: what's the phone # for ???
A: VZW is a phone company. Every device that connects to the VZW network has a phone number associated with it that allows it to dial in. Although your Jetpack uses a phone number there is no need for you to have to enter or use it on anything other than for billing purposes.
Q: it appears that my tablet has already picked up the jetpack as a connection. is that it ???
Yes. The Jetpack should be broadcasting some kind of unique network name. The default network name (SSID)should be on a white sticker on the back of the Jetpack.
Q: I have another device at a different location. how do I get that device connected to the jetpack ??
A: Jetpacks have a very limited range. You need to bring your devices within the wireless radius of the Jetpack in order for them to connect to it. Normally a jetpack can only reach 1 room away from its current position, they are not as powerful as a normal home wireless router.

Sharing an external sample clock between PCI-6722 and PCI-6602

I need PCI-6602 work with PCI-6722。6602 shares 6722’s ao/SampleClock as external clock and triggered by 6722’s ao/StartTrigger。The master device is 6722, which refered as Dev1, and the slave device is 6602, which refered as Dev2. A RTSI line is used to connect the two devices correctly.
I use C API to finish my program and my code is as follows:
//config 6722 analog out task
1、DAQmxCreateTask("NI6672", &hAOTask);
2、DAQmxCreateAOVoltageChan(hAOTask, "Dev1/ao0", "", -10.0, 10.0, DAQmx_Val_Volts, "" );
3、DAQmxCfgSampClkTiming(hAOTask, "", 1000.0, DAQmx_Val_Rising, DAQmx_Val_ContSamps, 1000);
4、DAQmxWriteAnalogF64(hAOTask, 1000, 0, 10.0, DAQmx_Val_GroupByChannel, data, NULL, NULL);
//config 6602 counter task
5、DAQmxCreateTask("NI6602", &hCounterTask);
6、DAQmxCreateCICountEdgesChan(hCounterTask, "Dev2/ctr0", "", DAQmx_Val_Rising, 0, DAQmx_Val_CountUp);
//use /Dev1/ao/SampleClock for external clock
7、DAQmxCfgSampClkTiming(hCounterTask, "/Dev1/ao/SampleClock", 1000.0, DAQmx_Val_Rising, DAQmx_Val_ContSamps, 1000);
//use /Dev1/ao/StartTrigger
8、DAQmxSetTrigAttribute (hCounterTask, DAQmx_ArmStartTrig_Type, DAQmx_Val_DigEdge);
9、DAQmxSetTrigAttribute (hCounterTask, DAQmx_DigEdge_ArmStartTrig_Src, "/Dev1/ao/StartTrigger");
10、DAQmxSetTrigAttribute (hCounterTask, DAQmx_DigEdge_ArmStartTrig_Edge, DAQmx_Val_Rising);
//start counter task first
11、DAQmxStartTask(hCounterTask);
//start 6722 task
12、DAQmxStartTask(hAOTask);
I run it on the MAX virtual Device, and the Step 11always returned -89120。
I try to slove this problem, so I change the Step 7, use /Dev2/PFI9 to instead of /Dev1/ao/SampleClock.
7、DAQmxCfgSampClkTiming(hCounterTask, "/Dev2/PFI9", 1000.0, DAQmx_Val_Rising, DAQmx_Val_ContSamps, 1000);
The code runs well, but I don’t know which terminal is connected by /Dev2/PFI9. Does it connect to /Dev1/ao/SampleClock？
I use another API DAQmxConnectTerms to ensure that, I add a Step before Step 11.
DAQmxConnectTerms( "/Dev1/ao/SampleClock", "/Dev2/PFI9", DAQmx_Val_DoNotInvertPolarity );
The program also run well. But I am still not sure that 6602 is sharing /Dev1/ao/SampleClock。If not, which terminal of Dev1 is connected by /Dev2/PFI9?
Is my code right? If not, hwo to fix my code or supply some example for me? Thanks.

Hello Shokey,
From looking over your post, it looks like you want to program in C, using simulated instruments, a master/slave design with a PCI-6602 and PCI-6722. The PCI-6722 is the master device and the PCI-6602 is the slave device. In order to implement this with the real cards, you would need a RTSI cable between the 2 cards in order to pass the triggers and the sample clock. Unfortunately with simulated devices you can't implement this so parts of your code won't be able to work exactly like if you had the instrument.
If you did have the instrument, you can implement this by performing the following steps:
Master Device:
1.) Export the ao/SampleClock and ao/StartTrigger to a RTSI Line. (See DAQmx C Reference help for DAQmxExportSignal to export these)
Slave Device:
1.) Set the Sample clock and the trigger to the RTSI.
There is another forum that I think will help you out to implement this correctly. In this forum, the customer was trying to export a trigger through a RTSI and the problem he was experiencing was a broken RTSI cable. His code, he states, works. I hope this helps you with this and if you have any more questions, feel free to post.
Jim St
National Instruments
RF Product Support Engineer

Frequency divide by N doesn't work on Counter-Timer PCI-6602

Hello everybody,
I tried to do something basic ( ?) with this Counter-Timer 6602 Board, and it doesn’t work.
So I hope some people with more experience than me could understand what happens here.
1) What I need:
I need to generate 4 synchonised clocks, whose periods will be multiple of 1 ms.
2) What I have:
LabVIEW 7.0 and a PCI-6602 Counter-Timer Board in a DELL PC running under XP pro.
The PCI-6602 Counter-Timer Board has 8 counter timers named CTR 0, CTR 1, ... CTR7.
3) What I have already done, and that worked:
- Generate a 1 kHz “Master Clock” signal from CTR 4, configured by “Continuous Pulse Generator Config.vi” (found in “Data Acquisition, Counters...).
- configure CTR 0 and CTR 1 to work as frequency dividers, by use of “Down Counter or Divider Config.vi”.
- Apply the output signal of CTR 4 (OUT ) to the SOURCE inputs of CTR 0 and CTR 1 by means of physical wiring in the SCB-68 connection box.
When I do this, I get two nice secondary clock signals on my oscilloscope screen, ( with periods = 3 ms, or 5 ms or whatever multiples of 1 ms I choose) from CTR 0 and CTR 1 outputs , very clean and perfectly in phase with the 1 kHz Master Clock.
So far, so good...
But I still need 2 more secondary clocks...
One would say: “No problem, do the same trick with two other counters...” Well, not so simple, it seems...
4) What I tried to do, and that didn’t work:
When I try to do the same frequency division with any of the remaining counters, (CTR2 to CTR7), the program stops and I get an error “ –10020 : Time base not valid “.
I can’t figure out what happens here: I thought any counter could be configured to work as a frequency divider, but it seems not to be so, and I am stuck here.
Has anyone an idea about how to fix this type of problem?
Attached file: hor_div02New.vi
Attachments:
hor_div02New.vi ‏123 KB

karolik,
I'm just adding a followup in English. As Marc L. mentioned, the particular vi named "Down Counter or Divider Config" isn't compatible with the 6602. While the 6602 does have the ability to generate 4 synchronized clocks, a different syntax is needed. Here's how I'd do it:
Traditional NI-DAQ
1. Configure a continuous pulsetrain on CTR 4. Route its output to, say, RTSI 4. Don't start it yet.
2. Configure CTR 0,1,2,3 for continuous pulsetrains using RTSI 4 as their "timebase source." Start them.
3. Start the CTR 4 pulsetrain.
4. Now CTR's 0-3 should generate separate clocks with synchronized phasing.
DAQmx
1. Configure a continuous pulsetrain on CTR 4. Don't start it yet.
2. Configure CTR 0,1,2,3 for continuous pulsetrains using "Ticks" for units. Use a DAQmx property node (probably Channel property node, but am not 100% sure and don't have a LV PC handy to check) to specify that the "ctr4 internal output" should be used as the timebase. Start them.
3. Start the CTR 4 pulsetrain.
4. Now CTR's 0-3 should generate separate clocks with synchronized phasing.
-Kevin P.

How do I synchronize a pulse output to a sine wave input on a pci-6602 card?

I have a sine wave from a function generator as the input on the source of a counter. Input frequencies vary from 2-60 kHz. I want to produce a pulse train at a different frequency (10 Hz), but in phase with the sine wave. I have only been using Labview 5.1 for a short time. I am using the PCI-6602 card with a SCB-68 connecting block.

Hello;
Unfortunately, you can't connect a analog sinewave to the counter source. Counters only work with digital TTL signal type. To accomplish that task, you will need a MIO board working in sync with the 6602 you already have.
Regards
Filipe A.
Applications Engineer
National Instruments

Alternative to PCI-6023E + PCI-6602

Hello,
I am already using a system to acquire 16 analog inputs data (at 50Hz) and 100Hz PWM signals (counters) and to send 100Hz PWM signals to external devices. Because it deals with 12 concurrent counters I bought 2 x PCI-6602 counter boards on top of a PCI-6023E for the 16 analog inputs (through a SC2345 box). This works all well.
I now have to build a simplified and portable solution that has to run on a laptop. I was thinking about a DAQ-6036E or DAQ-6024E (or even DAQ-6062E) and keep a SC2345 but do not know if I will get the same functionalities particularly for the PWM counting (in and out). I have to be able to count the high edge of the square signal at 100Hz while acquiring my analog inputs; also be able to generate those 100Hz signals. Will I be able to connect my counter in and counter out (one of each) to the SC2345 to do that?
Thanks for your comments,
Christophe

Hello Christ0phe,
Looking at your current specifications and hardware, the best suitable solution for a portable appication with >2 counters would be the Compact RIO Platform.
As this is an FPGA based platform, you can implement (theoretically) as much counters for PWM generation and reading as you want.
As you are an existing DAQ user, you will not be able to reuse your existing code. The cRIO platform uses the NI-RIO driver which is using some different program logic than the NI-DAQmx driver.
Why is the Compact RIO platform the best solution?
Well, the cRIO chassis can be powered by a simply DC power supply. Depending which chassis this is between 9 and 30 VDC.
The cRIO platform also has a dedicated controller inside which will run your LabVIEW code. The PWM logic itself can run on the FPGA integrated in the cRIO chassis.
So, the laptop will not be use for any calculation, only for monitoring and control of your application.
If you want to stay with the NI DAQ plaform I see two other portable solutions:
The first one is to make the swtich to the PXI platform.
There is a small chassis (PXI-1033) which has an integrated MXI-interface. Using MXI technology, you can control a PXI chassis from another PC, including a laptop (using ExpressCard, not PCMCIA).
For the PXI platform you can use identical or similar DAQ boards as you have now, reusing your existing LabVIEW code.
Drawback of the PXI-1033 is that it can only be powered by 230VAC, you will have to provide a DC-to 230VAC converter yourself to be able to use it in the field.
For your information. It's becoming harder and harder to find laptops with PCMCIA slots, ExpressCard is the successor available on most new laptops.
But please have a look at following article concerning laptop compatibility: http://zone.ni.com/devzone/cda/tut/p/id/5035
A last solution is to use the cDAQ plaform.
Again a fully portable DAQ solution, but as it uses the same technology as the 'normal' DAQ boards, it only has 2 counters on board.
As your PWM speeds are quite slow, it may although be possible to use this platform for multiple PWM signal generation and reading. All will depend on the desired PWM accuracy (resolution) and if they all share the same signal period.
It is possible to use the 2 on-board counters as a known sample clock to generate and read the PWM pulses using correlated DIO.
Correlated DIO means that your digital input and output signals are hardware clocked (synchronized with other available clock source). On the cDAQ platform, your I/O modules must be placed in slot 1-4 of the cDAQ chassis to be able to use correlated DIO. Possible I/O modules are in the C-series 940x range.
Drawback: all your calculations have to be done on the fly in LabVIEW. You will need to write code to generate an array
of digital waveform data, then output it using hardware timed DIO
synchronized to generate counter clock. For the readout of the PWM signal, you will have to count (within the LV application) the number of tick (of pulses) of the sample clock during which the PWM signal was 'high' and calculate based on the known timing information the PWM on-time, period (and if needed duty cycle).
More info about cDAQ and Correlated DIO:
NI-DAQmx: Correlated Digital I/O with NI CompactDAQ and LabVIEW
Can I Use Different Sample Clocks for Correlated DI and DO?
Some examples exist:
CompactDAQ - Generating More Than 2 Pulse Trains
NI-DAQmx: Digital Channel Pulse Width Modulation (PWM)
This info should already help you make a selection.
But please contact you local National Instruments office if you need more information.
Best regards,
Best regards,
Joeri
National Instruments
Applications Engineering
http://www.ni.com/ask
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Synchronize PCI- 5421 and PCI-6602

I am using a PCI 6602 to generate four pulse trains. I am also generating a signal with a PCI 5421 AWG. All signals are started at the same time by using a common start trigger. The problem I am having is that after they run for a while the 6602 and 5421 signal start drifting. I know in the past I had sync clocks in a PXI chassis but I am unsure how to syncronize the clocks using PCI card. I do have an RTSI cable linking the cards together so could someone please give me an example of how to sycronize these cards in Labview (8.2)

Hello Kiebach,
You seem to be connecting the signal correctly in your NI-DAQmx program. However, I do not see any NI-FGEN code where you import the signal to be used as an external clock. Have you added this code? I think you would benefit from examining the example program entitled "niFgen_DAQmx_Synchronization_Example.vi". This program shows how to synchronize an NI-DAQmx device and an SMC Arb device. You can find the example by opening the NI Example Finder utility; you can open this utility from LabVIEW by going to the Help menu and selecting Find Examples... Once you have opened the NI Example Finder, you can navigate to this example by selecting the Browse tab and going to Hardware Input and Output>>Modular Instruments>>NI-FGEN (Signal Generators)>>Synchronization. You will notice that this example uses the Export Signals VI rather than the Connect Terminals VI. To help understand the difference between these two, you may want to examine this document.
Matt Anderson
Hardware Services Marketing Manager
National Instruments

Connect NI PCI-6602 with NI PCI-6503

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