Solution
You will not be able to use the NI 9945 directly with the DSUB version of the 9237, you would have to wire the sensors to the 9923, then connect it to the 9945. In the connection diagram for the 9237, you should be able to see which wires you need to connect from your sensors to the 9923.
Information on how to access the connection diagram in NI MAX can be found
here