Universal Robots e-Series Error Code C263A21: Validation of the detected Index Mark ({signed}) failed

Universal Robots Robot Minor System

Model: e-Series (UR3e/UR5e/UR10e/UR16e/UR20/UR30) | Code: C263A21

Applicable Systems
UR3 UR5 UR10 UR3e UR5e UR10e UR16e UR20 UR30

Symptoms

The absolute Motor Encoder position cannot be validated because the Motor position calculated by the Joint Encoder is invalid.

Possible Causes

  • The absolute Motor Encoder position cannot be validated because the Motor position calculated by the Joint Encoder is invalid.

Troubleshooting Steps

  1. Step 1: Conduct a complete rebooting sequence,
    Check if the issue is resolved after this step
  2. Step 2: Update software,
    Check if the issue is resolved after this step
  3. Step 3: Contact your local Universal Robots service provider for assistance
    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.

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

Category: Robot