daqmx physical channels supported functions

[GPGPR]

Hi,

I would like to do a program like the MAX way.

By choosing a measurement type(Voltage, acceleration, etc...), i would like to get a list of hardware that support, or not, the choosen measurement.

I browsed the daqmx property nodes and did'nt figure out how to do this.

Any hints?

Guillaume

[RavensFan]

You can't get MAX to show you a list of all the devices that support a specific type of measurement.  If you know the measurment you want, use the NI website and their DAQ wizards to help you find a device that meets your specifications.

What you could do, though, is once you have a device number you think might work for you is create a simulated device in MAX.  That will let you see what types of settings and measurement types you could set for it and give you an idea how you would create the settings for the real piece of hardware once you get it.

[GPGPR]

Hi,

I see that my question was not clear enough.

I already have the hardware i need and I do know what it is doing and how it work. The end user of that system, no.

There is gonna be differents daq card(Dynamic signal acq and multifunction daq).

So, what i want to do is a Labview program that will ask the user what is the measurement type he want to do and show him which hardware and ressources he can use according to that measurement type.

Is that clearer? Do you need more informations?

Regards,

Guillaume

[Dennis_Knutson]

All of the information is available with property nodes. You can get a list of devices and from there, what types of channels and how many each device has.

Seems like you might be trying to reinvent the wheel though. You can have a user define a task in MAX and have the program run that task.

Message Edited by Dennis Knutson on 02-16-2009 08:08 AM

[GPGPR]

Hi,

I know what dennis showned with the picture and expected to use that.

What i want to know is the Measurement type(Voltage, Acceleration, current, temperature, etc...). These informations are available only at the global channel level.

I just want to do the exact process to create a global channel in MAX.

I might be trying to reinvent the wheel but, i dont want the users to use MAX, i want them to use the software i made. I dont want to give support for using MAX and dont want to explain to every users what is MAX.

Regards,

Guillaume

[Dennis_Knutson]

I don't believe the measurement types are anything more than a list of constants and when you select a type, the program looks at the capabilites of the DAQ cards present (using the property nodes I showed and probably others), to see if the existing cards support the measurement function. I've only done measurements that require voltage inputs and don't know the specific needs for some (i.e. acceleration, strain).