NI 9188 and CompactRIO chassis

Hi!

Currently i need a cRIO system that can interface with DELTA ASD-A2 servo drive controller. So, i need a CANopen interface onboard my cRIO. While searchig NI hardware i've found a NI-9881 CANopen module. But in the requirements tab i see "module requires the NI cRIO-911x/906x/908x chassis". And i have a 9073, 9074 and 9075 chassis. Why not use the integrated chassis and controller for NI 9188 (i guess, there is some serious reason for that)? Or maybe NI-9188 module will work with new integrated controller/chassis (9075/9076/9074)?

Any help will be appreciated.

Thanks!