How can the DHCP be deactivated on the weQube+?

If only the weQube+ logo appears on the display when the weQube is switched on and the device does not start up completely, the cause is often the network configuration. In most cases, DHCP is activated and the sensor waits for a DHCP server to automatically assign it an IP address – which is not provided for in many industrial networks.

The product image shows a B50 vision sensor with auto-focus.
The weQube+ B50 is available as a Smart Camera, vision sensor and OCR Reader and solves a wide range of industrial image processing tasks in real time.

What is DHCP?

DHCP (Dynamic Host Configuration Protocol) is a network protocol that automatically assigns devices an IP address as soon as they connect to a network. This is practical in IT environments, but in industrial networks without a central DHCP server, it can result in devices not receiving an IP address – and therefore not starting or being accessible.

Solution 1: Deactivate DHCP via the button on the weQube+

You can switch off DHCP directly on the device itself – without software.

This is how you proceed:

  1. Disconnect the weQube+ completely from the power supply.
  2. Press the middle button on the device and switch it on again.
  3. Press and hold the button for approx. 40 seconds and wait until the weQube+ has fully booted up.
  4. Deactivate DHCP in the menu: Settings / Ethernet → DHCP → Off

→ Now the weQube+ is working with a static IP address and the startup process should run correctly again.

Solution 2: Deactivate DHCP via the software (BootP-DHCP Server)

Alternatively, DHCP can also be deactivated using the “BootP-DHCP Server” software tool.

This is how you proceed:

  1. Install the “BootP-DHCP Server” tool.
  2. Set up the software tool.
  3. Search the network for the MAC address (starting with “54:4a:…”) of the weQube+.
    Tip: Reset the IP address of your network card to the default setting (DHCP).
  1. Assign a fixed IP address to the MAC address found.

Which devices does the procedure apply to?

The procedure described here applies to the weQube+ models B50S, B50R, B50M and C50C.

Conclusion

If the weQube+ only displays the logo at startup, DHCP is usually activated and no IP address has been assigned. By deactivating DHCP – either directly via the button on the device or with the BootP-DHCP Server Tool – the sensor is assigned a static IP address again and starts as usual.

Author

Picture of Max Mustermann

Max Mustermann

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