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Headquarters Australia
Beckhoff Automation Pty. Ltd.

Building 4, 163–179 Forster Road
Mount Waverley, VIC 3149, Australia

+61 3 9912 5430
info@beckhoff.com.au
www.beckhoff.com/en-au/

CX8280 | Embedded PC with RS232/RS485

Image similar, may contain optional accessories
CX8280 | Embedded PC with RS232/RS485

CX8280 | Embedded PC with RS232/RS485

Power LEDs
E-bus or K-bus
Coupler
supply
Input for
power contacts
Power contacts
Front flap
USB port
Link/Act
Ethernet connection
Bus interface
CX8280 | Embedded PC with RS232/RS485

CX8280 | Embedded PC with RS232/RS485

CX8200 Embedded PC series: higher computing power in a compact format

Embedded PCs with an Arm® Cortex® CPU

TwinCAT runtime for Linux® from Beckhoff

CX8200 Embedded PC series: higher computing power in a compact format

Embedded PCs with an Arm® Cortex® CPU

TwinCAT runtime for Linux® from Beckhoff

The CX8280 Embedded PC has two serial interfaces, one with RS232 and one with RS485 physics. These are both located on the D-sub socket. They are not bound to any particular protocol and can be used with the corresponding TwinCAT 3 Functions for the different serial communication protocols.

The CX8280 features an Arm® Cortex®-A53 dual-core processor with 1.2 GHz. The basic configuration of the CX8200 includes a 1 Gbit Ethernet interface, a USB 3.0 interface, a 1 GB LPDDR4 RAM, and a slot for a microSD card. The microSD card is not included in the scope of delivery and must be ordered separately, taking the desired memory capacity into account.

E-bus or K-bus terminals can be attached as required; the CX8280 automatically recognizes the type of I/O system connected during the start-up phase. The control system is programmed with TwinCAT 3 via the bus interface or the additional Ethernet interface. TwinCAT 3 licenses must be ordered via the TwinCAT 3 price list.

Beckhoff RT Linux® is used as operating system.

Product status:

product announcement | estimated market release 2nd quarter 2025

Product information

Technical dataCX8280
ProcessorArm® Cortex®-A53, 1.2 GHz
Number of cores2
Flash memoryslot for microSD card, card not included (requires a microSD card with a minimum capacity of 16 GB)
Main memory1 GB LPDDR4 RAM (not expandable)
1-second UPSintegrated (1 MB on microSD card)
Interfaces1 x RJ45 10/100/1000 Mbit/s, 1 x USB 3.0, 1 x bus interface
Coolingpassive
Bus interfaceD-sub socket, 9-pin, 1 x RS232, 1 x RS485
Data transfer rates300 baud…115 kbaud
Diagnostics LED1 x TC status, 1 x WD, 1 x error
Clockinternal, capacitor-buffered real-time clock for time and date (storage capacity > 21 days)
Operating systemBeckhoff RT Linux®
Control softwareTwinCAT 3 runtime (XAR) from TwinCAT 3.1 Build 4026
I/O connectionE-bus or K-bus, automatic recognition
Power supply24 V DC (-15%/+20%)
Current supply E-bus/K-bus2 A
Max. power consumption4 W
Max. power consumption (with loading UPS)7.5 W
Max. power consumption E-bus/K-bus10 W (5 V/max. 2 A)
Dimensions (W x H x D)71 mm x 100 mm x 73 mm
Weightapprox. 220 g
Operating/storage temperature-25…+60°C/-40…+85°C
Relative humidity95%, no condensation
Vibration/shock resistanceconforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emissionconforms to EN 61000-6-2/EN 61000-6-4
Protection ratingIP20
Approvals/markingsCE, UL
TwinCAT 3 platform levelEconomy (20); please see here for an overview of all the TwinCAT 3 platform level
Accessories
CX1900-013216 GB microSD card
ZB31809-pin D-sub connector for CX8x80/CX7080 (RS232/RS485) with switchable termination resistor

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