You have the PCI card then.......The PCI card has settings to set the size and the other normal D-net setting...you can access these in MANAGEMENT mode.....you should be able to see the heartbeat in your external inputs(3 bit counting up) and that will be your status group. the next group will be you user Input start the outs should start in the same output group number
If the first 3 bits of 20030 are counting 20040 will be you first input group and 30040 should be your first output group.
You will have to verify where those are mapped to (in controller)to use the 0xxxx and 1xxxx bits in a robot program e for your DIN commands....
OOPS......MAINTENANCE mode