CU320‑2 Control Units feature the following interfaces as standard:

• 4 DRIVE-CLiQ sockets for communication with other DRIVE-CLiQ devices, e.g. Motor Modules, Line Modules, Sensor Modules, Terminal Modules
• CU320‑2 PN: 1 PROFINET interface with 2 ports (RJ45 sockets) with PROFIdrive V4 profile
• CU320‑2 DP: 1 PROFIBUS interface with PROFIdrive V4 profile
• 12 parameterizable digital inputs (floating)
• 8 parameterizable bidirectional digital inputs/outputs (non-floating)
• 1 serial RS232 interface
• 1 interface for the BOP20 Basic Operator Panel
• 1 slot for the CompactFlash card on which firmware and parameters are stored
• 1 slot for mounting an option module (e.g. TB30 Terminal Board)
• CU320‑2 DP: 2 rotary coding switches for manually setting the PROFIBUS address
• 1 Ethernet interface for commissioning and diagnostics
• 3 test sockets and one reference ground for commissioning support
• 1 connection for the electronics power supply via the 24 V DC supply connector
• 1 PE/protective conductor connection
• 1 ground connection

A shield connection for the signal cable shield of an option module is located on the CU320‑2 Control Unit.

The available slot is used to optionally expand the interfaces, for example, to include additional terminals or for communication purposes.

The status of the CU320‑2 Control Unit is indicated via multi-color LEDs.

As the firmware and parameter settings are stored on a plug-in CompactFlash card, the Control Unit can be changed without the need for software tools.

The CU320‑2 Control Unit can be mounted on the side of the Line Module in booksize format via brackets integrated in a Line Module. The CU320‑2 Control Unit can also be fixed to the wall of the control cabinet using the integrated fixing lugs. As the CU320‑2 Control Unit is not as deep as the Line Modules, suitable spacers are available to increase the depth of the CU320‑2 Control Unit to 270 mm (10.6 in).