The CUA32 Control Unit Adapter is snapped onto the Power Module in blocksize format and communicates with the CU320 Control Unit or an NCU 7.x of the SINUMERIK by means of a DRIVE-CLiQ link.

The Control Unit Adapter's power is supplied by the Power Module via the PM-IF interface. If the Control Unit Adapter needs to communicate when the Power Module is switched off, it must be supplied with 24 V DC from an external source.

Other DRIVE-CLiQ devices such as Sensor Modules or Terminal Modules can be connected to the Control Unit Adapter.