Home Beckhoff CX Embedded PC Systems CX5140-0175

CX5140-0175 Beckhoff

Name: CX5140-0175
Brand: Beckhoff
Price: 391 USD
Availability: InStock
Rating: 4.7 (36 reviews)

Rated 4.7 (36 total ratings)

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The Beckhoff CX5140-0175 is part of the CX Embedded PC Systems series and is powered by a quad-core Intel Atom E3845 processor running at 1.91 GHz. This unit features 4 GB DDR3-RAM, 256 MB graphics memory, and includes 2 LAN ports and 4 USB 2.0 ports. It has a 24 V DC power supply and maximum power consumption of 16 W.

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Product Description:

The CX5140-0175 is an embedded PC manufactured by Beckhoff within the CX Embedded PC Systems series. Acting as a compact control platform, it combines processing, fieldbus, and visualization functions so that I/O terminals on the same rail can be driven without a separate controller. This integration allows the unit to serve as the central processor for machine sequences, data logging, and HMI tasks in industrial automation lines.

An Intel Atom E3845 processor has four cores operating at a core frequency of 1.91 GHz. The processor supports deterministic multitasking across the 4 logical PLC runtimes commonly deployed in TwinCAT projects. Main program data and real-time buffers reside in 4 GB DDR3-RAM, while graphics instructions run on an integrated engine clocked at 542 MHz. The graphics engine accesses a frame buffer of 256 MB, giving local panels fluid updates without consuming excessive shared memory bandwidth. These processing and memory resources allow the controller to execute motion control blocks, database writes, and browser-based dashboards simultaneously.

Power is supplied through a single 24 V DC rail, and the system draws no more than 16 W under full computational and I/O load. The unit provides 2 × RJ45 10/100/1000 Mbit/s Ethernet interfaces for EtherCAT real-time traffic and connections to supervisory networks, while removable media, service keys, or barcode scanners can be attached to 4 × USB 2.0 Type A ports. The housing measures 142 × 100 × 92 mm and clips directly onto the terminal row. Internal bus contacts carry up to 2 A for logic modules, while the power contacts support up to 10 A for higher-current terminals. An fTPM 2.0 security function protects stored credentials and other sensitive data. Passive cooling dissipates heat without requiring a fan, which reduces moving parts inside the housing and supports quiet operation in industrial control cabinets.

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Cpu Clock
1.91 GHz

CPU cores
4

Dimensions
142 x 100 x 92 mm

Graphics Base Clock
542 MHz

Graphics Memory
256 MB

Io Terminal Supply
2 A

Lan Ports
2 x RJ45, 10/100/1000 Mbit/s

Main memory
4 GB DDR3-RAM

Max Power Consumption
16 W

Power Contacts Load
10 A

Power supply
24 V DC

Processor
Intel Atom E3845

Secure Element
fTPM 2.0

Usb Ports
4 x USB 2.0 Type A

Frequently Asked Questions about CX5140-0175:

Q: What processor is used in the Beckhoff CX5140-0175 embedded PC?

A: The CX5140-0175 uses an Intel Atom E3845 processor.

Q: How much memory does the CX5140-0175 have?

A: This model is equipped with 4 GB DDR3-RAM as its main memory.

Q: How many LAN ports are available on the CX5140-0175 and what speeds do they support?

A: The CX5140-0175 features two RJ45 LAN ports supporting 10/100/1000 Mbit/s speeds.

Q: How many USB ports are provided on the CX5140-0175?

A: There are four USB 2.0 Type A ports included on this device.

Q: What is the required power supply for the CX5140-0175?

A: The embedded PC requires a 24 V DC power supply for operation.

Symptom / LED pattern	Likely Cause (what it means)	Recommended Corrective Action
PWR LED off (no green)	24 V DC not present or too low	Verify cabinet supply is 24 V DC (-15 %/+20 %), check terminals and fuse, then repower unit.
PWR LED flashes red (8 Hz)	Power-controller fault on the IPC	Remove 24 V, wait ≥ 10 s, inspect wiring for shorts; if repeat fault, replace CX power-supply module.
TC LED red / yellow	TwinCAT in Stop or PLC crash	Open TwinCAT on engineering PC, read error list, correct PLC code or fieldbus mapping, then switch state back to Run.
HDD LED permanently red after boot	CFast / micro-SD not detected or corrupt	Re-seat/remap CFast card, check file-system integrity; replace card if LED stays red.
FB1 / FB2 LED red	Fieldbus (e.g., EtherCAT, Profibus) offline	Verify bus cable, topology and address; repair broken segment; restart fieldbus master, then reset faults.
K-bus ERR LED red/blinking	I/O terminal fault or address conflict	Count blink code, check offending terminal; reseat or replace terminal, then reset controller.
Device shuts down or throttles, housing > 70 °C	CPU over-temperature	Improve cabinet airflow, lower ambient to ≤ 60 °C, clean filters; confirm device temperature falls before restart.
System clock resets on power-up	CMOS coin-cell battery depleted	Replace 3 V lithium cell (front flap), set correct date/time in BIOS; export PLC certificates after battery change.
1-second UPS warning in TwinCAT log	Super-capacitor UPS at end of life	Run 24-h recharge; if capacity < 1 MB, order Beckhoff cap-pack repair kit and rebuild UPS module.
Both Ethernet port link LEDs dark	Cable, switch or NIC disabled in BIOS	Test with known-good patch cable; enable NICs in BIOS; reload driver in Windows/TwinCAT/BSD.

Model	Processor / Cores	Clock (GHz)	RAM (GB)	Pre-installed OS / TwinCAT runtime	Size (W×H×D mm)
CX5140-0175	Intel Atom E3845 / 4 cores	1.91	4	Win 10 IoT 2019 LTSC 64-bit, TwinCAT 3 XAR	142 × 100 × 92
CX5140-0155	Same CPU / 4 cores	1.91	4	Win 10 IoT 2016 LTSB 64-bit, TwinCAT 3 XAR	142 × 100 × 92
CX5140-0125	Same CPU / 4 cores	1.91	4	Windows Embedded Std 7 P 32-bit, TwinCAT 3 XAR	142 × 100 × 92
CX5130-0125	Intel Atom E3827 / 2 cores	1.75	4	Windows Embedded Std 7 P 32-bit, TwinCAT 3 XAR	142 × 100 × 92
CX5120-0120	Intel Atom E3815 / 1 core	1.46	2	Windows Embedded Std 7 P 32-bit, no TwinCAT	122 × 100 × 92
CX5120-0110	Intel Atom E3815 / 1 core	1.46	2	Win Emb Compact 7, no TwinCAT	122 × 100 × 92

1. CX5140-0155

2. CX5140-0135

3. CX5140-0140

4. CX5140-0160

5. CX5140-0125

6. CX5140-0113

7. CX5130-0125

8. CX5130-0175

9. CX5130-0155

10. CX5120-0120

Blink Pattern / Code	Meaning
Persistent rapid flashing	Electromagnetic-interference (EMC) disturbance or unstable 24 V supply
3 pulses – arg 0	K-bus command error (no Bus Terminal or defective terminal present)
4 pulses – arg 0	K-bus data error – break detected directly after the power-supply terminal
4 pulses – arg n	Break behind Bus Terminal n (wiring/open-circuit at that position)
5 pulses – arg n	Register-communication error with Bus Terminal n (terminal hardware fault)
6 pulses – arg 0	Error during controller initialisation (replace or reflash Embedded PC)
6 pulses – arg 1	Internal data error – recover by power-cycling the CX5140
6 pulses – arg 8	Internal data error – hardware reset required (cycle 24 V)
7 pulses – arg 0	Mismatch between configured and actual K-bus process-image lengths
TC LED yellow	PLC crash / TwinCAT runtime exception detected (controller has halted)

Internal Product Review

‘‘The Beckhoff CX5140-0175 is an embedded PC system built around an Intel Atom E3845 processor with 4 CPU cores. Dual RJ45 10/100/1000 Mbit/s LAN ports and 4 GB DDR3-RAM support responsive control tasks and straightforward network integration. Low 16 W power consumption makes this unit a strong platform for efficient industrial automation.’’