# Beckhoff CX8093

Hardware · `CX8093` · verification: source checked

The Beckhoff CX8093 is a control system with a PROFINET RT device interface implemented as a two-port switch. It can connect K-bus or E-bus I/O terminals and recognizes the connected I/O system during start-up. It is programmed with TwinCAT 2 PLC over the fieldbus interface or an additional Ethernet interface.

## Specification

| Property | Value |
|---|---|
| Category | embedded pc |
| Weight | 0.18 kg |
| Ethernet ports | 3 |
| 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)
- Protocols: [PROFINET](https://machineschema.com/protocol/profinet.md)

## Safety

- Approvals/markings: CE, UL, ATEX, IECEx, cFMus.
- ATEX: II 3G Ex nA IIC T4 Gc; II 3D Ex tc IIIC T135°C Dc.
- IECEx: Ex nA IIC T4 Gc; Ex tc IIIC T135°C Dc.
- cFMus: Class I, Division 2, Groups A, B, C, D; Class I, Zone 2, AEx ec IIC T4 Gc.
- Operating temperature: 0…55°C; storage temperature: -25…+85°C.
- Protection rating: IP20.
- Relative humidity: 95%, no condensation.

## Study notes

- Programming languages: IEC 61131-3; control software: TwinCAT 2 PLC; web visualization, online change and up/down load code are supported.
- Operating system: Windows Embedded CE 6; the extended support end date has passed and up-to-date security updates can no longer be provided.
- Main memory: 64 MB DDR2 RAM, not expandable; flash memory uses a microSD slot with 512 MB included, optionally expandable.
- Interfaces: 1 x RJ45 10/100 Mbit/s, 1 x USB device behind the front flap, and 1 x bus interface; the bus interface is 2 x RJ45 switched at 100 Mbit/s.
- I/O connection: E-bus or K-bus with automatic recognition; current supply for E-bus/K-bus is 2 A; max power consumption for E-bus/K-bus is 10 W (5 V/max 2 A).
- Integrated 1-second UPS with 1 MB on microSD card; internal battery-backed clock for time and date, battery behind the front flap and exchangeable.
- Cooling is passive; diagnostics LEDs are 1 x TC status and 2 x bus status; web-based management is supported.
- Dimensions (W x H x D): 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.
- Product status: regular delivery (not recommended for new projects); recommended alternative: CX8290.

## Sources

1. [Embedded PC with Arm9™ and PROFINET device](https://www.beckhoff.com/en-en/products/ipc/embedded-pcs/cx8000-arm9/cx8093.html) (accessed 2026-10-25)

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