How to differentiate between a UR CB3.0 and a UR CB3.1 Robot Controller.

Most Robotiq URCaps are compatible only with the CB3.1 controller. If a product fails to work after a URCap update on a UR CB-Series robot, it's important to verify which controller version you’re using. Here are two methods to help you identify whether your robot uses a CB3.0 or CB3.1 controller.

Information

Method 1: Check the Polyscope Installation Medium

Ask yourself: "Is Polyscope installed on a flash card or a USB drive?"

• If Polyscope is installed on a compact flash card, the robot is using a CB3.0 controller.

CB3.0 systems use compact flash memory cards for Polyscope

• If Polyscope is installed on a USB drive, the robot is using a CB3.1 controller.

   

CB3.1 systems use USB sticks instead of flash cards.

Method 2: Use the Robot Serial Number

If you can’t check the controller directly, use the robot's serial number to determine the version.

If your robot’s serial number is higher than the listed range, it likely uses a CB3.1 controller.

 

Conclusion

Knowing whether you’re working with a CB3.0 or CB3.1 controller helps ensure compatibility with Robotiq URCaps. Check the memory type or serial number to confirm your controller version and avoid unexpected issues.