Uisng the PCI 6503 to read a Digital port

[prasanth]

Hi,

  I am new to LabView. For one of my applications I am using PCI 6503 to read a 16 bit digital port from an FPGA board. I am having a single bit valid signal that goes high for certain time to indicate a valid data from the board. As PCI 6503 does not support change detection how can I get my requirement done with a PCI 6503 device.

Thank You,
Prasanth.

[Dennis_Knutson]

Could you be a little more specific about 'goes high for certain time'? Since the 6503 is software timed, all you can do is have a DAQmx Read in a loop and if the bit is high, do another read of the port. You won't be able to poll any faster than about 1kHz.

[prasanth]

Dennis,

  Than you for the reply. Since I am using a PC the maximum rate at which I can operate is 1Khz. I have my output rate well within this limit. A polling rate of 1Khz is ok. I just want to confirm if polling this particular line is the only possible solution with a PCI6503 card.