BECKHOFF CP6700 Panel PC Installation and Maintenance Manual

Beckhoff CP6700 Series Built in Panel PC Installation, Debugging, and Maintenance Guide

In the field of industrial automation, the built-in Panel PC highly integrates display, touch, and computing cores, making it an ideal choice for the human-machine interface of control cabinets. The Beckhoff CP6700 series is equipped with Intel processors, DDR4 memory, CFast storage, and rich interfaces, making it particularly suitable for machines and system engineering that require compact layout and reliable operation. This article is based on official technical documentation and presents a comprehensive practical manual covering model identification, mechanical installation, electrical connections, PC-ON intelligent start stop, 1-second UPS data protection, CFast replacement, and TwinCAT version adaptation.

Model Identification and Core Configuration Quick Check

The complete order number for CP6700, such as CP6700-0001-0050 or CP6700-0001-0060, where the last four digits represent device generation and hardware configuration:

-0050: Equipped with Intel ®  I210 Ethernet controller, 4xUSB 2.0, fTPM 2.0 not enabled, minimum TwinCAT version is 2.11 build 2254 or 3.1 build 4020.0.

-0060: Equipped with Intel ®  The i210 controller provides 2 x USB 3.0 (X107, X108) and 2 x USB 2.0 (X105, X106), with fTPM 2.0 enabled. The minimum TwinCAT version required is 3.1 build 4024.7.

Both support dual Gigabit LAN (100/1000Base-T), suitable for EtherCAT real-time communication (cycle time ≤ 1ms, supports distributed clock). If you order the stainless steel front panel option (model CP6700-1400), the protection level of the front panel has been raised from standard IP54 to IP65, suitable for environments that require frequent cleaning such as food and pharmaceuticals. However, please note that button extensions (C9900-G072/G073) cannot be added under this option.

Mechanical installation: hole size and clamping lever fixation

CP6700 adopts a pull-out clamping lever design similar to CP29xx, which can be quickly fixed to the control cabinet door without the need for additional screws. Before installation, it is necessary to obtain the corresponding dimensional drawings (specific values are omitted in this article, please refer to the official download center).

Key installation points:

Openings and wall thickness: The wall thickness of the control cabinet should be between 1mm and 5mm to ensure sufficient clamping force of the lever.

Ventilation gap: Leave at least 5cm of space above and below the equipment to ensure natural convection and heat dissipation, with an upper limit of 55 ° C ambient temperature.

Installation steps:

Insert the panel into the opening from the outside and stabilize it.

Rotate the four clamping levers on the rear side outward by 90 degrees.

Use a 2.5mm hex wrench to tighten the screws on the lever in sequence until the panel is tightly attached to the cabinet door.

If the optional button extension is selected, its external dimensions will change, and the corresponding hole diagram (see Fig.13 in the document) needs to be used.

Electrical connection and grounding specifications

1. Power interface (X101)

CP6700 adopts a 2 × 2-pin voltage socket, with pin definitions as follows:

Pin 4:24V positive pole

Pin 3：GND（0V）

Pin 1: PC-ON (input, used for remote control of start stop)

Pin 2: P-S (Power Status output, indicating shutdown completion)

Power supply requirements: 22-30V DC, must comply with NEC Class 2 or PELV specifications, external fuse rating ≤ 4A (UL 248). The recommended cross-sectional area for the cable is 1.5mm ² to ensure that the voltage at the device end is not less than 22V. The randomly included plug has an order number of C9900-P943 and can be purchased separately.

2. Grounding (PE&FE)

There is a protective conductor connection point (PE) on the back of the equipment, which must be connected to the grounding busbar of the control cabinet using a wire of ≥ 4mm ². This connection serves both as a protective grounding (to prevent electric shock) and a functional grounding (to meet EMC immunity EN 61000-6-2 and emission EN 61000-6-4). Neglecting grounding can lead to touch drift, communication abnormalities, and even hardware damage.

3. PC-ON intelligent start stop mechanism (advanced function)

CP6700 provides a unique PC-ON input that can be used in conjunction with the machine's main switch to achieve elegant shutdown of the operating system:

Startup: When the PC-ON pin is 0V, the system automatically boots the operating system upon power up.

Normal shutdown: Switch the PC-ON pin to 24V, and the operating system will begin the shutdown process. After the shutdown is completed, the P-S output drops from 24V to 0V, indicating that the main power can be safely cut off.

Important: If PC-ON is restored to 0V in advance during the shutdown process, the system will restart. Therefore, external logic needs to be designed to ensure that the P-S becomes 0V before cutting off the main contactor.

This function allows the main switch to be normally closed and only controls the PC start and stop through the PC-ON signal, avoiding file system damage caused by directly cutting off 24V. The P-S output has a maximum load of 0.5A and can drive intermediate relays.

Signal interface configuration

1. Dual Gigabit Ethernet (X103, X104)

RJ45 interface supports 100/1000Mbps adaptive, with a maximum line length of 100m. LED indication:

Green light constantly on: link established; Green light flashing: data transmission and reception.

Orange light (100M) or green light (1000M): indicates the current speed.

The i210 controller has good real-time optimization for EtherCAT and is suitable as a master or slave interface for motion control.

2. USB interface (X105-X108)

-0050:4 USB 2.0, maximum 500mA per channel, electronic protection.

-0060: X107 and X108 are USB 3.0 (blue), X105 and X106 are USB 2.0.

3. DVI interface (X109)

Only transmitting digital signals, can be connected to a second DVI monitor for dual screen expansion.

Status indicator light and 1-second UPS

1. Tri color status LED (FB, HDD, PWR)

FB (Field Bus):

Red constantly on: TwinCAT Stop

Blue constantly on: TwinCAT Config

Green constantly on: TwinCAT Run

Red/blue or red/green flashing: corresponding status accompanied by fieldbus error.

HDD (red): Always on indicates that the storage medium is being accessed.

PWR (green): Constant light indicates that the PC has been powered on.

2. Capacitive 1-second UPS (option C9900-U214)

When the external 24V drops, the built-in supercapacitor can maintain power supply to the processor for several seconds, enough for TwinCAT to save up to 1MB of persistent data to the storage medium. This feature needs to be controlled through the function block FB_S-UPS_SAPI and only supports Windows Embedded Compact 7/Standard 7 or Windows 10 IoT Enterprise. Attention: This UPS is only used to store critical data and cannot be used as an uninterruptible power supply.

Debugging and Beckhoff Device Manager Security Configuration

When powered on for the first time, the pre installed operating system automatically starts, and the Beckhoff Device Manager will pop up the Security Wizard, forcing the modification of the default password (factory username: Administrator, password: 1). Be sure to set a strong password (at least 10 characters, including uppercase and lowercase letters, numbers, and special characters) and change it regularly. Device Manager supports remote configuration through local browser access to localhost/config, including network, storage, peripherals, etc.

If the device is not pre installed with an operating system, you need to install and load the corresponding drivers (Intel chipset, network card, USB, etc.) by yourself.

Maintenance and replacement of vulnerable parts

1. Cleaning standards

Allow: Dip a soft cloth in a small amount of glass cleaner, benzene, or alcohol.

Prohibited: Compressed air, steam, high-pressure water, abrasives, metal scraper.

Cleaning mode: Use Beckhoff Display Control Tool to enable "Cleaning Mode" (taskbar sun icon), lock touch for 5-120 seconds to prevent accidental touch.

2. Suggestions for regular replacement of components (based on operating conditions)

Recommended replacement cycle for components

UPS battery pack (supercapacitor) for 5 years

2.5-inch mechanical hard drive for 5 years or 20000 hours at>40 ° C/30000 hours at<40 ° C

Fan for 7 years

CFast/SSD/CF card for 10 years

Motherboard battery (CR2032) 5 years

3. Replace the motherboard battery (CR2032)

The battery is located under the bottom cover plate (loosen two M3 screws), use pointed nose pliers to pull out the old battery, and insert the new battery with the negative pole facing up (positive pole facing down). After replacement, the BIOS time needs to be reset.

4. Replace the CFast storage card

Also located under the bottom cover plate, using a push push mechanism:

Lightly press the CFast card, and it will automatically pop out. Pinch and pull it out.

Insert the new card and press it fully into place.

Before replacement, it is necessary to use Beckhoff Service Tool (BST) to create a system image or contact Beckhoff to obtain an original factory image (with a valid Windows license). Without backup, old card data cannot be restored.

TwinCAT version compatibility

To ensure optimal performance, please follow the minimum hardware version requirements:

-0050: TwinCAT 2.11 build 2254 or TwinCAT 3.1 build 4020.0 (or higher).

-0060: TwinCAT 3.1 build 4024.7 (or higher).

Using older versions of TwinCAT may not recognize certain chipsets or cause EtherCAT communication abnormalities.

Quick Troubleshooting Checklist

Possible causes and measures for handling the phenomenon

Completely unresponsive power supply not connected or voltage<22V Check 24V input, measure X101 Pin3-Pin4 voltage

After power on, do not boot (black screen) BIOS settings error. Press Del to enter BIOS and load default settings (Load Optimized Defaults)

System startup but touch failure, poor grounding or dirty screen, check PE connection; Clean the edges of the screen; Run touch calibration

TwinCAT reports error through USB communication. The cycle time is too short. Adjust the cycle time to 50~80ms in TwinCAT

Time and date frequently reset, motherboard battery exhausted, replace CR2032 battery

Contact Beckhoff Service for sudden black screen backlight tube malfunction (non LED) or power fluctuation during system operation (backlight cannot be replaced on site)

Chemical resistance (stainless steel front panel model)

If you choose stainless steel front panel (IP65), it has good resistance to common solvents and cleaning agents (according to DIN 42115 Part 2, action time>24 hours):

Tolerance: Ethanol, acetone, acetic acid (<50%), phosphoric acid (<30%), ammonia water (<40%), paraffin oil, gasoline, diesel, coffee, tea, vinegar, etc.

Intolerance: concentrated mineral acids, concentrated alkaline solutions, benzyl alcohol, dichloromethane, dimethylformamide, tetrahydrofuran, and high-pressure steam above 100 ° C.

The liquid temperature during cleaning should not exceed 45 ° C (for a few minutes).

Scrap disposal

Classification and recycling after disassembly: aluminum/metal shells are sent for metal recycling; Plastic parts (PC, PA6.6) are sent for plastic recycling; Circuit boards and fans should be treated as electronic waste; The CR2032 battery needs to be sealed with tape to seal the electrodes and sent to the battery recycling point.