# Beckhoff CX7031

Hardware · `CX7031` · verification: source checked

The Beckhoff CX7031 is an embedded PC in the CX7000 series with an Arm Cortex-M7 single-core processor at 480 MHz. It provides eight multi-functional digital inputs, four multi-functional digital outputs, a microSD slot, an Ethernet interface, and a PROFIBUS slave interface. It runs TwinCAT/RTOS and is programmed with TwinCAT 3 over Ethernet.

## Specification

| Property | Value |
|---|---|
| Category | embedded pc |
| Weight | 0.142 kg |
| Ethernet ports | 1 |
| Processor | Arm® Cortex®-M7, 480 MHz |
| Supply voltage | 24 V DC (-15%/+20%) |
| IP rating | IP20 |
| Operating temp min | -25 °C |
| Operating temp max | 60 °C |

## Connected

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

## Safety

- Protection rating is IP20.
- Operating temperature range is -25 to +60 °C.
- Relative humidity is 95%, no condensation.
- Approvals/markings: CE, UL.
- 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.

## Study notes

- The CX7000 series has eight integrated multi-functional inputs and four integrated multi-functional outputs.
- The CX7031 has a 9-pin D-sub socket for PROFIBUS slave operation, with transmission rates from 9.6 kbaud to 12 Mbaud.
- Flash memory is a microSD card slot with a 512 MB card included; main memory is 32 MB SDR and is not expandable.
- E-bus or K-bus terminals can be attached and are recognized automatically during start-up.
- The operating system is TwinCAT/RTOS; control software is TwinCAT 3 runtime (XAR).
- Included TwinCAT 3 functions are TC1000 ADS, TC1100 I/O, TC1200 PLC, TF4100 Controller Toolbox, TF4110 Temperature Controller, TF6255 Modbus RTU, TF6340 Serial Communication, TF6701 IoT Communication (MQTT), TF6730 IoT Communicator and TF6760 IoT HTTPS/REST.
- Dimensions are 49 mm x 100 mm x 73 mm and weight is 142 g.
- Cooling is passive; the internal real-time clock is capacitor-buffered with storage capacity >21 days.
- The CX7031 has 4 kB NOVRAM.
- Multi-functional I/O includes digital input, digital output, counter, encoder, analog input and PWM functions.

## Sources

1. [Embedded PC with Arm® Cortex®-M7, PROFIBUS slave and integrated I/Os](https://www.beckhoff.com/en-en/products/ipc/embedded-pcs/cx7000-arm-r-cortex-r/cx7031.html) (accessed 2026-10-25)

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