Advantech PCI-1758UDO

Dear Comedi Users,

I am trying to execute Advantech example code, writing to "/dev/comedi3"
which is an Advantech PCI-1758UDO card, using the following command:

  ret = comedi_do_insn(device, &insn).

After several attempt, I have always the following message:

  /dev/comedi3 : Input/Output error

Has anybody the same experiences can share more details on the error msg?

Thanks and regards,
Dadang