FPGA- Generating an pulse in NI 9263 and Acquiring it in NI 9205 with PFIO as Input

Hi Friends,

              I`m generating an PWM pulse from the Analog output card NI 9263 and acquiring it in PFIO of NI 9205. But i`m unable to read it. Is there any other way to use PFIO for calculating the fall and Rising edge.