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Beckhoff CX5120

The Beckhoff CX5120 is a fanless embedded PC for control cabinet installation. It uses an Intel Atom E3815 single-core processor at 1.46 GHz and provides two Gigabit Ethernet ports, four USB 2.0 ports, and a DVI-I interface. Depending on the ordered operating system and TwinCAT runtime, it can run PLC, motion control, or visualization applications.

Source checked9/9 values · 2026-10-25Beckhoff AutomationEmbedded PC
CX5120X1X22 × ETHERNETIntel Atom® E3815, 1.46 GHz24 V DC (-15%/+20%)IP20CX5120 · FRONTSchematic · port count from spec
IP rating
IP20
Weight
0.975kg

Specification

1 source
Categoryembedded pc
Ethernet ports2
ProcessorIntel Atom® E3815, 1.46 GHz
Supply voltage24 V DC (-15%/+20%)
Power consumption0.011 kW
Operating temp min-25 °C
Operating temp max60 °C

Quick answers

How much does the Beckhoff CX5120 weigh?
0.975 kg, per Embedded PC with Intel Atom® E3815 (beckhoff.com).
What is the IP rating of the Beckhoff CX5120?
IP20, per Embedded PC with Intel Atom® E3815 (beckhoff.com).

Study notes

  • The CX5120 has a slot for a CFast card and a microSD card; cards are not included.
  • Main memory is 2 GB DDR3 RAM and is not expandable.
  • An integrated 1-second UPS is provided with 1 MB on the CFast card.
  • Cooling is passive. Diagnostics LEDs indicate power, TC status, flash access, and bus status.
  • I/O connection is E-bus or K-bus with automatic recognition; E-bus/K-bus current supply is 2 A.
  • The CX5100 series has a compact design and does not support modular extension modules like the CX2000 series.
  • Product status is regular delivery, not recommended for new projects; the recommended alternative is CX5330.
  • TwinCAT 3 platform level is Performance (40).
  • Optional factory-fitted interfaces include RS232, RS485/RS422, EtherCAT master/slave, PROFIBUS master/slave, CANopen master/slave, and PROFINET RT controller/device.
  • 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.
  • Max. power consumption is 11 W; with loading UPS it is 18 W.
  • Operating system options include Windows Embedded Compact 7, Windows Embedded Standard 7, Windows 10 IoT Enterprise editions, and TwinCAT/BSD.

Safety

  • Approvals/markings: CE and UL. With the CX2900-0107 ordering option: ATEX, IECEx, cFMus, and CCC.
  • The CX2900-0107 device modification is mandatory for use of the CX5120 in hazardous areas, zone 2/22 or Class I, Division 2.
  • ATEX marking with CX2900-0107: II 3G Ex ec IIC T4 Gc.
  • IECEx marking with CX2900-0107: Ex ec IIC T4 Gc.
  • cFMus marking with CX2900-0107: Class I, Division 2, Groups A, B, C, D; Class I, Zone 2, AEx ec IIC T4 Gc.
  • Read the device documentation for use in hazardous areas carefully.
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