# Beckhoff CX8080

Hardware · `CX8080` · verification: source checked

The Beckhoff CX8080 is an embedded PC/controller with an Arm9 400 MHz processor, 64 MB DDR2 RAM, and Windows Embedded CE 6. It has RS232 and RS485 serial interfaces on a 9-pin D-sub plus an Ethernet port for programming. It runs TwinCAT 2 PLC software and automatically detects connected E-bus or K-bus terminals at startup.

## Specification

| Property | Value |
|---|---|
| Category | embedded pc |
| Weight | 0.18 kg |
| Ethernet ports | 1 |
| Processor | Arm9, 400 MHz |
| Supply voltage | 24 V DC (-15%/+20%) |
| Power consumption | 0.003 kW |
| IP rating | IP20 |
| Operating temp min | 0 °C |
| Operating temp max | 55 °C |

## Connected

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

## Safety

- Approvals/markings stated: CE, UL, ATEX, IECEx, cFMus.
- ATEX marking: II 3G Ex nA IIC T4 Gc; II 3D Ex tc IIIC T135°C Dc.
- IECEx marking: Ex nA IIC T4 Gc; Ex tc IIIC T135°C Dc.
- cFMus marking: Class I, Division 2, Groups A, B, C, D; Class I, Zone 2, AEx ec IIC T4 Gc.
- Relative humidity operating limit: 95%, no condensation.

## Study notes

- Main memory is 64 MB DDR2 RAM (not expandable); flash memory uses a microSD card slot with 512 MB included (optionally expandable).
- Integrated 1-second UPS with 1 MB on microSD card; battery-backed real-time clock with exchangeable battery behind the front flap.
- Serial bus interface: 9-pin D-sub with 1 x RS232 and 1 x RS485; transmission rate 300 baud…115 kbaud.
- Programming languages: IEC 61131-3; control software: TwinCAT 2 PLC; web visualization and online change supported.
- Other interfaces: 1 x USB device behind the front flap and 1 x bus interface.
- E-bus or K-bus terminals can be series-connected and are automatically recognized at startup; E-bus/K-bus current supply is 2 A.
- Cooling is passive; dimensions 64 mm x 100 mm x 73 mm.
- 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.
- Storage temperature range: -25…+85°C; relative humidity: 95%, no condensation.
- Product status: regular delivery, not recommended for new projects; recommended alternative: CX8280.
- Operating system: Windows Embedded CE 6; extended support end date has passed, so up-to-date security updates cannot be provided.
- Options include microSD card capacities 16 GB, 32 GB, and 64 GB (some announced for 4th quarter 2026).

## Sources

1. [Embedded PC with Arm9™ and RS232/RS485](https://www.beckhoff.com/en-en/products/ipc/embedded-pcs/cx8000-arm9/cx8080.html) (accessed 2026-10-25)

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