BECKHOFF CX51x0 Embedded PC Deployment Guide

NIC Teaming: Intel raw drivers are also required. Create a new Team in the Teaming tab and select "Adapter Fault Tolerance" as the type to achieve redundancy. Note: These network ports should not be bound when using real-time EtherCAT.

Restore Beckhoff real-time driver: Run TcRteinstall.exe (TC3 path: C: TwinCAT 3.1 System ), select the interface and install it.

5.2 DVI-I（X200）

The maximum distance is 5 meters, supporting resolutions from 640 × 480 to 1920 × 1200. It can be converted to VGA (passive adapter) or connected to Beckhoff's DVI Extended remote panel (up to 50 meters away).

5.3 Optional Interface Special Configuration

RS232 (N030): Limited driver support, does not support APIs such as Setup Comm and AKS ommBreak. If all functions are required, consider using USB to serial port conversion.

RS422/485 (N031): default no echo+terminal resistance (endpoint). Other configurations (with echo, no terminal, RS422 full duplex) must be specified at the factory (ordering suffix such as N031-0001, etc.), and DIP switches cannot be configured on site.

EtherCAT Master Station (M112): Directly connected to FPGA, it can achieve three EtherCAT Master Stations (two front board ports+one through terminal side). Supports full DC synchronization without the need for external synchronization.

EtherCAT Slave (B110): Connect CX51x0 as a slave to the EtherCAT network.

PROFIBUS: Pin 3 (red line B) is RxD/TxD-P, and Pin 8 (green line A) is RxD/TxD-N. Pin 6 output+5V is used for active terminal resistors and must not be used for other purposes.

CANopen: Pin 2=CAN low, Pin 7=CAN high, Pin 3&6=GND, Pin 5=shielded.

5.4 Serial port usage mode under Windows 10

N030/N031 has two operating modes under Windows 10, which can be switched through BIOS:

Mode BIOS Settings (LPSS&SCC Devices Mode) OS Selection Effect

TwinCAT (default) PCI mode Windows 7 serial port is not visible in Windows Device Manager, recognized as COM99 in TwinCAT

Windows 10 ACPI mode Windows 8. x serial port displays as COM1 in Device Manager, TwinCAT cannot be used

After switching modes, a restart is required. Starting the PLC in TwinCAT mode will display an error (does not affect functionality).

Software and TwinCAT configuration

6.1 Selection of Operating System

CX51x0 supports OS and order code (5th digit in the model):

Windows Embedded Compact 7 (security updates have stopped, TwinCAT is only up to Build 4024)

Windows Embedded Standard 7 P (32/64 bit)

Windows 10 IoT Enterprise 2016/2019/2021 LTSB/LTSC (32/64 bit)

TwinCAT/BSD

Minimum capacity of CFast card: Windows CE 7 and TwinCAT/BSD require 20 GB; Windows 7/10 requires 40 GB.

6.2 TwinCAT Scanning and Configuration

Select target system: Click on "Choose Target" in TwinCAT and search by IP or hostname (default hostname format CX - followed by MAC address and three bytes). Login credentials: Administrator/1.

Scan I/O devices: right-click on "I/O Devices" ->Scan. Automatically recognize K-bus (displayed as CX-BK) or E-bus (displayed as EK1200).

Configure serial port (N03x): After scanning, a COM port appears under the device tree. Select "PCI/PCIe device" in the "Serial Port" tab, click Search to select the corresponding COM port. If the option is grayed out, try other options first before switching back.

Ethernet cable redundancy: Requires TS622x authorization (TC2) or TC3 built-in but requires authorization. In EtherCAT main station ->Advanced Settings ->Redundancy, select "Second adapter" and specify the second network port. When a disconnection occurs in a circular topology, communication automatically switches paths. View the status of "LINK_MIS A/B" information through the Online tab.

6.3 Hardware watchdog

Use the function block FB-PcWatchdog-BAPI (Tc2-System library). Set nWatchdogTimeS (e.g. 1 second), and then loop call (interval must be less than the set time). If the PLC stops or enters a dead loop, the watchdog will automatically restart the embedded PC. Note: During debugging (breakpoint, reset, stop TwinCAT), the watchdog should be disabled, otherwise it will restart unexpectedly.

Diagnose LED and K-bus/E-bus fault codes

7.1 Front panel LED

LED color/meaning

PWR green=power supply is normal; Red/Yellow (brief at startup)=Bootloader running

TC green=Run, red=Stop, blue=Config, yellow=TwinCAT 3 PLC crash/error

HDD red=CFast card access in progress

FB1/FB2 optional interface status (depending on fieldbus type)

7.2 Power terminal LED (K-bus mode)

Meaning of LED

Us 24V green=CPU and bus power supply are normal

Up 24V green=normal power supply to power contacts

K-BUS RUN green=K-bus communication is normal

K-BUS ERR red=error, flashing code

K-BUS ERR flicker decoding:

Quick flashing → Start

The first slow sequence pulse number=error code

Pause (LED off)

The second slow sequence pulse number=incorrect parameter (fault terminal position, excluding power terminal)

Common error codes (see page 80 of the manual for the complete table):

Error code parameter meaning handling

Continuous flashing - EMC interference check for power spikes, grounding, and filtering

30 K-bus command error: No terminal or damaged terminal; Binary search for faulty terminals