BECKHOFF Embedded PC with Ethernet - CX8090
The BECKHOFF CX8090 is a compact and efficient Embedded PC designed for industrial automation tasks requiring Ethernet connectivity, real-time communication, and flexible I/O expansion. With its ARM9 processor, integrated web visualization support, and compatibility with TwinCAT 2 PLC software, the CX8090 provides a powerful yet space-saving control solution suitable for machine building, process automation, and decentralized control architectures.
Specifications
| Brand |
Beckhoff |
| Part Number |
CX8090 |
| Category |
PLCs / Machine Control |
| Subcategory |
Industrial Computer |
| Condition |
New / Never Used Surplus |
| Processor |
ARM9, 400 MHz |
| Cores |
1 |
| RAM |
64 MB DDR2 |
| Flash Memory |
512 MB microSD (expandable) |
| Persistent Memory |
1-second UPS (1 MB) |
| Programming |
IEC 61131-3 (TwinCAT 2 PLC) |
| Ethernet Ports |
1 RJ45 (10/100 Mbit/s) + 2 RJ45 (switched bus) |
| USB |
1 USB device (front flap) |
| I/O System |
E-bus or K-bus (auto-detection) |
| Power Consumption |
Max. 3 W |
| Supply for I/O Bus |
2 A |
| Dimensions |
64 × 100 × 73 mm |
| Operating Temperature |
0…55 °C |
| Storage Temperature |
-25…85 °C |
| Humidity |
95 % (non-condensing) |
| Protection Rating |
IP20 |
| Compliance |
CE, UL, ATEX, IECEx, cFMus |
What our Experts Think
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Compact embedded control system: The Beckhoff CX8090 is a CX8000 series Embedded PC designed for small to mid-size automation and PLC applications.
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ARM-based efficiency: Uses an ARM9 400 MHz processor with low power consumption, ideal for simple, reliable control tasks.
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Built-in Ethernet communication: Features a 2-port switched Ethernet interface, enabling easy network integration and fieldbus communication.
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TwinCAT PLC platform: Runs Windows Embedded CE 6 with TwinCAT 2 PLC runtime, supporting standard IEC 61131-3 programming.
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Expandable I/O system: Directly supports Beckhoff K-bus or E-bus terminals, automatically detecting connected I/O modules.
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Minimal footprint design: Ultra-compact DIN-rail format with passive cooling makes it ideal for space-constrained control cabinets.
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Reliable 24/7 operation: Industrial-grade design with low power draw (~3 W CPU load) ensures stable long-term use.
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Legacy but widely used: Common in existing installations; newer projects often migrate to CX82xx series, but CX8090 remains popular for maintenance and upgrades.
Q&A
Q: What is the Beckhoff CX8090 used for?
A: The CX8090 is a compact embedded PC designed for PLC control, automation, and machine communication with integrated Ethernet networking.
Q: What system does it belong to?
A: It is part of the CX8000 embedded controller series from Beckhoff Automation, built for DIN-rail mounted industrial control applications.
Q: What are its main applications?
A: It is commonly used in factory automation, machine control, data acquisition, and distributed I/O systems where compact PLC control is required.
Q: What are its key features?
A: It includes an ARM-based processor, Ethernet interface for communication, built-in PLC runtime support via TwinCAT, and compact fanless design.
Q: Can it run PLC programs?
A: Yes. It supports PLC logic execution using Beckhoff TwinCAT automation software, enabling real-time control of industrial processes.
Q: What communication capabilities does it have?
A: It provides Ethernet connectivity for integration with HMI systems, I/O terminals, and higher-level SCADA or MES systems.
Q: Is it suitable for industrial environments?
A: Yes. It is designed for 24/7 operation with high reliability in industrial control panels and automation environments.
Q: Why choose the CX8090?
A: It offers a cost-effective, compact PLC solution with Ethernet connectivity for distributed automation systems.
Maintenance Tips
• Ensure a stable 24V DC power supply and proper grounding to maintain reliable Ethernet and PLC operation.
• Keep ventilation clear inside the control cabinet to prevent overheating of the CX8090 embedded PC.
• Regularly inspect Ethernet cables and connectors for secure fit, wear, or shielding damage to avoid communication loss.
• Maintain clean, dry, and dust-free installation conditions to protect internal electronics and ports.
• Perform routine backups of PLC programs, configuration files, and system data to prevent downtime.
• Keep firmware and system updates current using official tools from Beckhoff Automation.
• Monitor LED status indicators for CPU, EtherCAT, and Ethernet activity for early fault detection.
• Ensure proper cable routing away from high-voltage or high-noise lines to reduce signal interference.
• Avoid sudden power interruptions; use proper shutdown procedures to protect embedded storage and OS integrity.
• Periodically check internal storage health and replace media if slow performance or errors occur.
Damage 
Loss 
Theft 
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