Equivalent function for DIG_Prt_Config in NIDAQmx.

[Brad_K]

Hi stf13,

I don't know the answer, but here are some things to look into:

• Data layout in the array: DAQmxReadDigitalLines unpacks the data into a separate uInt8 for each line. If this is not what you are expecting, DAQmxReadDigitalU8 might be what you need.
• Pinout: double check that the physical channel name corresponds to the lines you have connected. Port3 corresponds to APC in the pinout diagrams from the PCI-DIO-96 manual.
• Errors: does DAQmxReadDigitalLines return an error or warning? A timeout error could indicate a connection problem with the handshaking lines.
• Return values: what do 'read' and 'bytesPerSamp' get set to after the read?
• Timing: does your program call start & read before the change actually occurs?

Brad