6524 Digital I/O

[rkpat]

Hi,
I'm currently using NI-DAQ-6254 board. As i understand, it has 3 ports:
Port 0 (P0.<0..31>)
Port 1 (PFI.<0..15>)
Port 2 (PFI.<0..15>)

I'm able to use the Port 0 for Digital Read and write, but am not able to do the
same with Port 1 & Port 2.

According to he 6254 Spec, Port 1 & 2 can be used for Static Digital I/P and O/P.
Then, why am i not able to read digital data using Port 1/ Port 2??

I was trying to use an external clock as there is no onboard clock engine on this
board.

Thanks,
rkpat

[Salvador_Santolucito]

Hello,

Your 6524 board can use the external clock for timed digital IO on Port 0 only. Ports 1 & 2 (as noted in the documentation) can only perform static digital IO. This means that Ports 1 & 2 only operate by software timed DIO updates. An example of one of these static Digital IO programs can be found in LabVIEW under Help >> Find Examples >> Hardware Input and Output >> DAQmx >> Digital Generation >> Write to Digital Port.vi

Thanks,
Sal