Synch series AO DAQmx with DIO

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• DAQmx: With relaxing break pulse blocking

  I have a NI 9401 module in a chassis 9171 and stand at the door of the output of a counter with the release of another counter. 1 meter (the signal to be blocked) generates a 3 Mhz signal and meter from 0 (the door) generates a 10 Hz signal that is sent outside to door pin of 1 meter. I expect this would be counter 1 door signal to produce the 3 Mhz flashes only when the counter 0 is high, but the wiring had no effect on the output of the 1 meter, it has always generated a continuous pulse train of 3 Mhz.  I found that a code is necessary to get a counter to pay attention to the signal to his door pin (this message was particularly useful) and it can be done with the node property relaxing break. After you have configured the node, however, I fell into this error:

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  Hi agoncalves,

  I took a glance at your VI and I see two immediate problems:

  1. it is not guaranteed that the two tasks will be reserve before the start of each one.  This explains your error and why it seems confusing.  The 9401 is configurable nibble, but you cannot change the direction while the device is being used (why the reserves are important).  The module starts with two nibbles the input value.  Your first task causes an exit so it switches direction on one of them.  When your task is committed (started), it hangs in this configuration.  The second task then also try an output drive, but on the other nibble that is entered and can not be activated because the first task is currently running.  The solution is to use the thread of the error to force the order of execution (or use a flat sequence structure).

  2. you won't run out of problems with your trigger signal unless that connected you to a separate entrance (and put the two trains of pulses on the nibble even).  You can change that by setting the property of canal CO. Pulse.Term. that's if you want to spend your signal through a few circuits external and back in.  If you use the signal directly, you can just use it internally.  By example/cDAQ1Mod1/ctr0InternalOutput

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  I m of the problems using the c# to DAQmx API. I have attached a sample program to demonstrate the way in which I use the API.

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  Hi niwaly,

  I recommend that you test the examples. This way you can be sure that the issue is not the driver itself, and you can debug your application. It can also give you a clue on how to proceed.

  If you have any examples in the file that I mentioned, you have not installed the driver with c# additional support during the installation procedure.

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• DAQmx with C JNI Java

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