Set the parameters of a NI DAQ board owing to COMEDI

Hello,

I have to control an equipment owing to :
- a computer with Linux and RTAI, involving a National Intruments I/O board (Ni DAQ 6251).
- an home-made board controlling the device (motor, sensor) and giving the Ni DAQ board an external interrupt.
I am going to build a Matlab / Simulink model including I/O COMEDI blocks (driver ni_pcimio.o), that I shall build on Real Time Workshop and compile for RTAI.
My problem is the following :
the output of my Simulink model (the command) shall be given to the device only when the external interrupt occurs.
It implies that I have to parametrize the detection of the external interrupt by the NI DAQ board : rising edge, level, etc.
NI replied me that it is possible to parametrize the NI DAQ owing to Labview but I will not have it on the PC.
Is it possible to parametrize the NI DAQ owing to COMEDI ? And how ?

Thanks,