Beckhoff CX8110 Embedded PC

3 slow flashes of 0 K-bus command error, failure to insert terminal or damage to one terminal; Using the split method to troubleshoot faulty terminals

Check if the bus terminal (KL9010/EL9010) is installed after 4 slow flashes of the 0 power module and disconnection

Check if terminal n+1 is correctly connected after 4 slow flashes of terminal n and subsequent disconnection

5 slow flashing n register communication errors, replace the terminal at position n

7 slow flashes, 0 process data length mismatch check for consistency between configuration and actual terminals

In TwinCAT, the K-bus state variable is located under the bus coupler. If the value ≠ 0, check the corresponding bit (bit0=error, bit1=configuration change, etc.). The recommended K-bus task cycle is ≤ 50 ms, and the actual update time is 1-5 ms.

9.3 Quick search for common problems

Possible causes and solutions for the fault phenomenon

Unable to connect via Ethernet due to IP address conflicts, firewall blocking DHCP/static IP checks; confirm port 80/443 is open

Remote display without screen CERHOST not enabled. Delete disabled registry file according to section 6.1 and restart

Persistent data not recovered, UPS not enabled, write filter blocking check if 1-second UPS is enabled in BIOS (CX8110 has no BIOS, automatically enabled); FBWF exceptions must include Boot

EtherCAT slave does not enter OP slave address conflict, process data alignment error check explicit device identification value; Confirm that all variable alignment meets Arm requirements

RTC time reset battery depleted, replace CR2032 battery (positive pole to the left, facing Ethernet port)

Maintenance and retirement

10.1 Regular replacement of components

Recommended replacement cycle for components

Motherboard battery (CR2032) 5 years

MicroSD card for 10 years

1 second UPS capacitor has the same lifespan as the equipment (no need to replace)

When replacing the battery, open the front cover and use a plastic screwdriver to pry out the old battery from the battery compartment, then push in the new battery (with the positive pole pointing to the left, i.e. towards the Ethernet port).

10.2 Cleaning and ESD protection

The power must be disconnected before cleaning. Only use a soft damp cloth to wipe the outer shell, and the ventilation duct can be cleaned with a vacuum cleaner. Prohibit the use of compressed air.

Avoid corrosive cleaning agents, solvents, abrasives, or hard objects.

ESD protection measures (grounding wristbands, conductive pads, etc.) should be taken when replacing internal components.

10.3 Retirement and Disposal

After disconnecting the power, remove the device from the DIN rail. MicroSD cards should be physically destroyed to prevent data leakage. Electronic components shall be disposed of in accordance with national regulations on electronic waste.

Summary of Technical Specifications

Project specifications

Processor Arm Cortex-A9 800 MHz

Memory 512 MB DDR3 RAM

Storage microSD 512 MB (expandable up to 16 GB)

Interface 1 x 10/100 Ethernet, 2 x EtherCAT slave stations

Bus K-bus/E-bus automatic recognition

1 second UPS support, up to 1 MB of persistent data can be saved

Power supply 24 V DC (-15%/+20%), maximum power consumption 9 W (including UPS charging)

Working temperature -25 ° C~+60 ° C (horizontal), -25 ° C~+50 ° C (vertical)

Protection level IP20

Certified CE, UL

Operating system Windows Embedded Compact 7 (support has expired)

TwinCAT 3.1， Separate authorization is required