C6920-1085-0040 by Beckhoff

The C6920-1085-0040 is an industrial PC produced by Beckhoff for control cabinets that use the C6 Industrial PC Units series. It provides a deterministic computing platform for PLC, motion, and HMI tasks in automated machinery and plant cells. The computer coordinates decentralized I/O and drive components through real-time Ethernet networks, allowing control data to move between connected devices with predictable timing.

Internal electronics are supplied from 24 V power rails, and the permissible input range extends from 22 VDC to 30 VDC. The eight-pole power connector supports a continuous current of 16 A. Two axial cooling fans provide forced airflow across the processor and chipset, helping control internal temperatures during continuous operation. Network integration uses 2 × RJ-45 Gigabit Ethernet ports for dual-channel connections to field devices or supervisory SCADA hosts. Local expansion and service peripherals connect through 4 × USB 2.0 receptacles. Visual output is provided through a single DVI-I video port that supports digital and analog display signals.

The enclosure has an IP20 protection rating, so it is intended for installation in dry, dust-limited control cabinets with managed airflow. Continuous operation is permitted from 0 °C to +55 °C, with noncondensing relative humidity of up to 95%. The unit can be stored at temperatures from -25 °C to +65 °C without damage to its solder joints or installed drives. The mechanical assembly withstands impacts of 5 G for 30 ms, covering typical shock events that can occur during transportation or equipment servicing. A single RS232 D-Sub-9 connector supports legacy devices such as barcode scanners and serial diagnostic equipment. This serial connection supplements the Ethernet and USB interfaces when older peripheral hardware must remain connected to the control system.