Universal Robots CB3 Error Code C4A71: Lost package from joint 1

Universal Robots Robot Minor Motion

Model: CB3 (UR3/UR5/UR10) | Code: C4A71

Applicable Systems
UR3 UR5 UR10 UR3e UR5e UR10e UR16e UR20 UR30

Symptoms

Serial communication problem with one or more joints

Possible Causes

  • Serial communication problem with one or more joints

Troubleshooting Steps

  1. Step 1: Verify the communication cables are connected properly,
    Check if the issue is resolved after this step
  2. Step 2: Conduct a complete rebooting sequence
    Check if the issue is resolved after this step

How to Reset

Power cycle the robot controller and perform a complete reboot sequence. If the error persists, update the software to the latest version.

Comments (0)

Share your experience to help others facing the same problem.

No comments yet. Be the first to share your experience!

Leave a Comment

Source: Universal Robots Official Error Codes Directory (https://www.universal-robots.com/manuals/EN/PDF/Shared/ErrorCodes/ErrorCodes.pdf)

Category: Robot