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CX7291 | Embedded PC with Arm® Cortex®-A9, BACnet/IP and integrated I/Os
Ethernet connection
MicroSD
2 x RJ45 (switched)
Address selector
CX7291 | Embedded PC with Arm® Cortex®-A9, BACnet/IP and integrated I/Os
Power contact
+24 V DC
+24 V DC
Power contact
0 V
0 V
+24 V US
Input 1
Input 3
Input 5
Input 7
+24 V UP
Output 1
Output 3
0 V US
Input 2
Input 4
Input 6
Input 8
0 V UP
Output 2
Output 4
CX7291 | Embedded PC with Arm® Cortex®-A9, BACnet/IP and integrated I/Os
CX7291 | Embedded PC with Arm® Cortex®-A9, BACnet/IP and integrated I/Os
The CX7291 Embedded PC has an Arm® Cortex®-A9 single-core processor with 720 MHz. In the basic configuration, the CX7291 has a slot for a microSD card and an Ethernet interface. As a special feature, the CX7000 series has eight integrated multi-functional inputs as well as four integrated multi-functional outputs.
E-bus or K-bus terminals can be attached as required; the CX7291 automatically recognizes the type of I/O system connected during the start-up phase. The control system is programmed with TwinCAT 3 via the Ethernet interface.
BACnet (Building Automation Control Network) is a standardized, manufacturer-independent communication protocol for building automation. Areas of application include HVAC, lighting control, safety and fire alarm technology.
Product status:
product announcement | estimated market release 3rd quarter 2026
Product information
| Technical data | CX7291 |
|---|---|
| Processor | Arm® Cortex®-A9, 720 MHz |
| Number of cores | 1 |
| Flash memory | slot for microSD card, 512 MB included (optionally expandable) |
| Main memory | 512 MB DDR3 RAM (not expandable) |
| Number of inputs | 8 multi-functional inputs (24 V DC) |
| Number of outputs | 4 multi-functional outputs (24 V DC, 0.5 A, 1-wire connection technology) |
| 1-second UPS | integrated (1 MB on microSD card) |
| Interfaces | 1 x RJ45 10/100/1000 Mbit/s, 1 x bus interface |
| Cooling | passive |
| Bus interface | 2 x RJ45 (switched) with BACnet/IP |
| Transmission rate | 10/100/1000 Mbit/s |
| Diagnostics LED | 1 x TC status, 1 x WD, 1 x error |
| Clock | internal, capacitor-buffered real-time clock for time and date (storage capacity > 21 days) |
| Operating system | TwinCAT/RTOS |
| Control software | TwinCAT 3 runtime (XAR) from TwinCAT 3.1 Build 4026 (XAE) |
| I/O connection | E-bus or K-bus, automatic recognition |
| Power supply | 24 V DC (-15%/+20%) |
| UPS OCT-capable | no |
| Current supply E-bus/K-bus | 2 A |
| Max. power consumption | 4 W |
| Max. power consumption (with loading UPS) | 7 W |
| Max. power consumption E-bus/K-bus | 10 W (5 V/max. 2 A) |
| Dimensions (W x H x D) | 71 mm x 100 mm x 73 mm |
| Weight | approx. 220 g |
| Operating temperature | -25…+60°C |
| Storage temperature | -40…+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 |
| Protection rating | IP20 |
| Included TwinCAT 3 Function | TC1000 TwinCAT 3 ADS, TC1100 TwinCAT 3 I/O, TC1200 TwinCAT 3 PLC, TF4100 TwinCAT 3 Controller Toolbox, TF4110 TwinCAT 3 Temperature Controller, TF6255 TwinCAT 3 Modbus RTU, TF6340 TwinCAT 3 Serial Communication, TF6701 TwinCAT 3 IoT Communication (MQTT), TF6730 TwinCAT 3 IoT Communicator, TF6760 TwinCAT 3 IoT HTTPS/REST, TF8020 TwinCAT 3 BACnet/IP, TF8040 TwinCAT 3 Building Automation |
| Approvals/markings | CE, UL |
| TwinCAT 3 platform level | Basic (10); please see here for an overview of all the TwinCAT 3 platform level |
| Technical data | Multi-functional I/Os | Digital input |
|---|---|
| Connection technology | 1-wire |
| Nominal voltage | 24 V DC (-15%/+20%) |
| Specification | EN 61131-2, type 3 |
| Signal voltage “0” | -3…+5 V |
| Signal voltage “1” | 11…30 V |
| Input filter | configurable, standard: 3 ms, min.: 10 µs |
| Technical data | Multi-functional I/Os | Digital output |
|---|---|
| Connection technology | 1-wire |
| Nominal voltage | 24 V DC (-15%/+20%) |
| Load type | resistive, inductive, lamp load |
| Switching times | typ. TON: 20 µs, TOFF: 10 µs |
| Short-circuit current | typ. < 2 A |
| Switching-off energy | < 150 mJ/channel |
| Technical data | Multi-functional I/Os | Counter |
|---|---|
| Connection technology | 1 x up/down counter, 1 x up or down counter |
| Number of counters | 1 |
| Nominal voltage | 24 V DC (-15%/+20%) |
| Specification | EN 61131-2, type 3 |
| Signal voltage “0” | -3…+5 V |
| Signal voltage “1” | 11…30 V |
| Cut-off frequency | up/down counter: 20 kHz, up counter: 100 kHz |
| Counter depth | 32 bit |
| Max. output current | 24 V/0.5 A (short-circuit proof) |
| Special features | set counter value, switch output, reload value |
| Technical data | Multi-functional I/Os | Encoder |
|---|---|
| Technology | incremental encoder interface |
| Nominal voltage | 24 V DC (-15%/+20%) |
| Specification | EN 61131-2, type 3 |
| Encoder connection | 1 x A, B: 24 V single-ended connection |
| Additional inputs | latch input, 24 V DC |
| Cut-off frequency | 250,000 increments (with 4-fold evaluation), equivalent 62.5 kHz |
| Counter depth | 32 bit |
| Quadrature decoder | 4-fold evaluation |
| Max. output current | 24 V/0.5 A (short-circuit proof) |
| Special features | latch function, software gate, set counter value, switch output, reload value |
| Technical data | Multi-functional I/Os | Analog input |
|---|---|
| Number of inputs | 2 |
| Technology | single-ended |
| Signal voltage | 0…10 V |
| Internal resistance | 500 kΩ |
| Input filter cut-off frequency | 2 kHz |
| Resolution | 12 bit (16 bit presentation) |
| Measurement error/uncertainty | < ±0.3% (relative to full scale value) |
| Technical data | Multi-functional I/Os | Pulse width modulation |
|---|---|
| Connection technology | PWM output |
| Number of outputs | 2 |
| Nominal voltage | 24 V DC (-15%/+20%) |
| Load type | resistive, inductive, lamp load |
| Max. output current | 24 V/0.5 A (short-circuit proof) |
| Frequency | 15 Hz…100 kHz |
| Duty cycle | 0…100% (TON > 20 ns, TOFF > 200 ns) |
| Short-circuit current | typ. < 2 A |
| Special features | separate frequency can be set for each channel |
| Options | |
|---|---|
| CX1900-0131 | 16 GB microSD card, instead of 512 MB microSD card* |
| CX1900-0133 | 32 GB microSD card, instead of 512 MB microSD card* (product announcement | estimated market release 4th quarter 2026) |
| CX1900-0135 | 64 GB microSD card, instead of 512 MB microSD card* (product announcement | estimated market release 4th quarter 2026) |
*Only available as flash memory extension in combination with a CX CPU module on order. Suitable for CX7xxx, CX80xx, CX81xx, CX9020.
| Accessories | |
|---|---|
| CX1900-0132 | 16 GB microSD card |
| CX1900-0134 | 32 GB microSD card (product announcement | estimated market release 4th quarter 2026) |
| CX1900-0136 | 64 GB microSD card (product announcement | estimated market release 4th quarter 2026) |
| ZK1090-9191-0xxx | RJ45, plug, straight, male, 8-pin – RJ45, plug, straight, male, 8-pin |
| ZK1093-9191-0xxx | RJ45, plug, straight, male, 8-pin – RJ45, plug, straight, male, 8-pin |
| BZ1xxx | 100 contact labels, various colors, pre-printed |
| BZ2xxx | 100 contact labels, various colors, blank |
| Material compliance | CX7291 |
|---|---|
| REACH SVHC | no |
| POP | compliant |
| RoHS | compliant with exemption |
| RoHS exemption | 7c-I: Lead-containing electrical and electronic components in glass and ceramic materials, excluding dielectric ceramics in capacitors |
| China-RoHS | www.beckhoff.com/china-rohs-ipc |
| CA Prop65 | www.beckhoff.com/prop65 |
| Disclaimer | This statement and the information contained above are, to the best of our knowledge and belief, accurate, based on the information we have received from our suppliers. This information is in line with the current standard of technology and our suppliers’ technical documentation. The absence of the substances is not verified by Beckhoff Automation by means of analytical tests. When addressed to our customers any information contained in this document is subject to the terms and conditions expressed in the governing customer agreement. Our general terms and conditions apply. |
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