# Beckhoff CX8290

Hardware · `CX8290` · verification: source checked

The CX8290 is an Embedded PC used as a controller with a second switched Ethernet port. It uses an Arm Cortex-A53 dual-core processor at 1.2 GHz and runs Beckhoff RT Linux. It is programmed with TwinCAT 3 and connects E-bus or K-bus I/O terminals, with a 24 V DC supply.

## Specification

| Property | Value |
|---|---|
| Category | embedded pc |
| Weight | 0.22 kg |
| Processor | Arm® Cortex®-A53, 1.2 GHz |
| Supply voltage | 24 V DC (-15%/+20%) |
| Power consumption | 0.004 kW |
| IP rating | IP20 |
| Operating temp min | -25 °C |
| Operating temp max | 60 °C |

## Connected

- Manufacturer: [Beckhoff Automation](https://machineschema.com/manufacturer/beckhoff.md)

## Safety

- Approvals/markings: CE, UL.
- Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27.
- EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4.
- Relative humidity: 95%, no condensation.
- Storage temperature: -40…+85 °C.

## Study notes

- Operating system: Beckhoff RT Linux®; control software: TwinCAT 3 runtime (XAR) from TwinCAT 3.1 Build 4026 (XAE).
- Main memory is 1 GB LPDDR4 RAM and is not expandable.
- Flash memory is a microSD card slot; the card is not included and requires a minimum capacity of 16 GB.
- Integrated 1-second UPS uses 1 MB on the microSD card.
- Internal capacitor-buffered real-time clock for time and date has a storage capacity greater than 21 days.
- Bus interface: 2 x Ethernet RJ45 switched 10/100/1000 Mbit/s; PROFINET (TF627x), EtherNet/IP (TF628x), and BACnet/IP (TF8020) are optional TwinCAT functions.
- I/O connection: E-bus or K-bus, with automatic recognition of the connected I/O system during start-up.
- Cooling is passive; dimensions are 71 mm x 100 mm x 73 mm.
- Current supply for E-bus/K-bus is 2 A; maximum power consumption for E-bus/K-bus is 10 W (5 V/max. 2 A).
- TwinCAT 3 platform level is Economy (20).
- Diagnostics LEDs: 1 x TC status, 1 x WD, 1 x error.
- TwinCAT 3 licenses must be ordered via the TwinCAT 3 price list.

## Sources

1. [Embedded PC with Arm® Cortex®-A53 and 2-port Ethernet switch](https://www.beckhoff.com/en-en/products/ipc/embedded-pcs/cx8200-arm-r-cortex-r-a53/cx8290.html) (accessed 2026-10-25)

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