Beckhoff CX9240

The CX9240 is a DIN rail-mountable embedded PC used as an Ethernet control system for PLC and motion control applications. It runs Beckhoff RT Linux on a four-core 1.2 GHz Arm Cortex-A53 CPU with 2 GB LPDDR4 RAM, two independent 1 Gbit Ethernet interfaces, four USB 3.0 ports and a DisplayPort. The operating system, TwinCAT and user projects are stored on an interchangeable microSD card, and Beckhoff I/O systems connect directly to the CPU module via E-bus or K-bus.

Source checked9/9 values · 2026-10-25Beckhoff AutomationEmbedded PC
CX9240X1X22 × ETHERNETArm® Cortex®-A53, 1.2 GHz24 V DC (-15%/+20%), electricaIP20CX9240 · FRONTSchematic · port count from spec
IP rating
IP20
Weight
0.65kg

Specification

1 source
Categoryembedded pc
Ethernet ports2
ProcessorArm® Cortex®-A53, 1.2 GHz
Supply voltage24 V DC (-15%/+20%), electrically isolated
Power consumption0.007 kW
Operating temp min-25 °C
Operating temp max60 °C

Quick answers

How much does the Beckhoff CX9240 weigh?
0.65 kg, per Embedded PC with Arm® Cortex®-A53 (beckhoff.com).
What is the IP rating of the Beckhoff CX9240?
IP20, per Embedded PC with Arm® Cortex®-A53 (beckhoff.com).

Study notes

  • TwinCAT 3 runtime (XAR) requires TwinCAT 3.1 Build 4026 (XAE) or later.
  • Main memory is 2 GB LPDDR4 RAM and is not expandable.
  • Boot and storage medium is a microSD card (not included) with a minimum capacity of 16 GB.
  • I/O connection is E-bus or K-bus with automatic bus system identification.
  • E-bus/K-bus current supply is 2 A; max power consumption on E-bus/K-bus is 10 W (5 V, max 2 A).
  • Max power consumption is 7 W, or 12 W while the integrated UPS is loading.
  • One multi-option interface can be assigned ex factory, e.g. RS232, RS485/RS422, 2x EtherCAT master, EtherCAT slave, PROFIBUS master/slave, CANopen, or a 2-port Ethernet switch.
  • Diagnostics LEDs: 1x power, 1x TC status, 1x flash access, 2x bus status.
  • Internal real-time clock is capacitor-buffered with storage capacity greater than 21 days.
  • Cooling is passive; dimensions are 84 mm x 100 mm x 91 mm (W x H x D).
  • Integrated 1-second UPS with 1 MB on the microSD card; UPS OCT-capable: no.
  • TwinCAT 3 platform level Economy Plus (30).

Safety

  • Approvals/markings: CE, UL.
  • Protection rating IP20.
  • Operating temperature range -25 to +60 °C; storage temperature -40 to +85 °C.
  • Relative humidity 95%, no condensation.
  • 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.
  • Power supply 24 V DC (-15%/+20%), electrically isolated.
  • Integrated 1-second UPS buffers the supply in case of power failure.
  • RoHS compliant with exemption; contains lead (REACH SVHC).
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