Simultaneous Counter and DIO

[KeA]

I have a PXI-6221/PXIe-6231 DAQ module on which all DIO pins are used for static DIO purposes. Now I would like to connect encoder signals from a PXI-7344 module via the RTSI lines to the counter(s) of the PXI-6221/PXIe-6231 in addition. So the specific pins would be pins 3, 37, 45 (counter 0) and pins 41, 42, 46 (counter 1) which I would like to route to the RTSI lines for the counters, while using them for general DIO purposes on the front panel connector.

I tired to use the Export Signal and DAQmx Dis/Connect Terminals VIs, but I am not sure how to (re)route the counter inputs to the RTSI lines and route the front panel connector pins to the general DIO circuits.

Is what I am trying to do even possible with the PXI-6221/PXIe-6231?

[John_P1 · Accepted solution]

The pins on the front-panel connectors are just the default lines used for counters.  To change the default, you can use a DAQmx Channel Property node.  So, yes you can continue using the DIO lines as you were before without interference from your counter tasks if you set the terminal to the appropriate RTSI line.

Out of curiosity, what is your 2nd DAQ device?  There is no PXIe-6231.  Do you mean PXIe-6251?

Best Regards,

[KeA]

Thanks for the answer, I'll try that 🙂

My other module is an X-series PXIe-6361.