Beckhoff CP39xx Control Panel

Optional extensions: buttons, toolboards, and handles

6.1 Button Expansion (C9900-G02x/G05x)

G02x: The cable is introduced through an M20 gland and requires the user to wire it themselves (using the wiring diagram provided by Beckhoff).

G05x: Using a 19 pin circular connector, Beckhoff provides prefabricated cables that only need to be plugged in.

The function of key extension can be mapped to custom shortcut keys (such as screen switching, emergency stop confirmation, numerical input, etc.) through upper computer software (such as TwinCAT).

6.2 Tool board and handle

Tool board (C9900-M406/M423/M419): Installed at the bottom of the panel, used to place keyboards, mice, or tools. Some models integrate IP65 USB-A sockets (1 or 2) on the rear side.

Handle (C9900-M361): 386mm long, aluminum anodized, easy to handle large panels.

Maintenance and Cleaning

7.1 Touch screen cleaning mode

To prevent accidental contact during cleaning, the "Cleaning Mode" must be enabled using the Beckhoff Display Control Tool:

Run the tool (the sun icon appears on the taskbar).

Right click on the sun icon and select 'Cleaning Mode'.

Set the cleaning duration (5-120 seconds).

During this period, touch screen input is disabled and can be wiped with a soft cloth and glass cleaner.

Attention: Not only should the display area be cleaned, but also the edges of the glass should be cleaned. Contaminants at the edges (such as liquid films) may form conductive bridges, leading to continuous triggering of misoperations at the screen edges.

7.2 Cleaning agents and tools

Permitted: Benzine spirit, glass cleaner, soft damp cloth, vacuum cleaner (only for housing ventilation slots).

Prohibited: Cleaning agents containing abrasives, metal scrapers (razor blades, steel shovels), steam jets, high-pressure water guns, compressed air (which may blow dust into the interior).

7.3 Faulty pixels

Individual pixel defects in TFT display screens are due to production process reasons and are not within the scope of warranty.

Common troubleshooting

Possible causes and solutions for the fault phenomenon

The panel shows no display of power loss, cable breakage, or poor plug contact. Check the power supply voltage (22-30V) and measure the M12 plug pin; Check the fuse; Check if CU8803 is powered (if used)

Screen is dark or completely black (power LED is on), backlight is damaged, internal components of the panel malfunction, contact Beckhoff service

The touch screen has no response or jumping function, and the grounding is missing or poor

User not properly grounded (static electricity)

Glass edge contamination inspection PE connection (≥ 4 mm ²)

The operator should wear regular shoes and stand on the ground

Clean the edges of the screen

TwinCAT access error via USB. The default cycle time of 10 ms is too short. The TwinCAT cycle time has been increased to 50-80 ms

CP Link 4 connection unstable cable with excessive length (>100 m), poor quality, and small bending radius. Use CAT5e/CAT6 shielded cable with a length ≤ 100 m to avoid sharp angle bending

When using CU8803, if the panel is not powered and the transmission box is not powered or the CP Link 4 cable is damaged, check the 24V input of CU8803; Replace the cable; Confirm that the independent power supply of the panel is not connected at the same time

If the above steps are invalid, record the device model and serial number (BTN), and contact Beckhoff service（ service@beckhoff.com ）.

Summary of Technical Specifications

Project CP39xx-0000 CP39xx-0010

Remote transmission technology DVI Extended+USB Extended CP Link 4 (HDBaseT)

Maximum distance 50 m 100 m

Video interface DVI Extended (dedicated) CP Link 4 (8-pin M12)

USB Transfer USB Extended (Non Ethernet) USB 2.0 over CP Link 4

First line power supply is not supported (using CU8803 transmitter box)

Weight (7 "~24") 1.8 kg~7.6 kg (with connecting block) Same as left (adapter weighs about 0.8-1.2 kg)

Power supply 24 V DC, 22-30 V, NEC Class 2 on the same left (no independent power supply required for CU8803)

Power consumption of 7 inches is about 15 W, and 24 inches is slightly higher at about 34 W (about 40 W corresponds to 24 inches)

Working temperature: 0~+55 ° C, same as left

Protection level IP65 (overall) IP65

Anti vibration/anti impact EN 60068-2-6/2-27 Same as left

EMC EN 61000-6-2/6-6-4 Same as left

Certified CE, FCC Class A on the same left