Universal Robots e-Series Error Code C743A9: The position of external axis at index {unsigned} is close to lower joint limit

Universal Robots Robot Minor Motion

Model: e-Series (UR3e/UR5e/UR10e/UR16e/UR20/UR30) | Code: C743A9

Applicable Systems
UR3 UR5 UR10 UR3e UR5e UR10e UR16e UR20 UR30

Symptoms

The position that the axis needs to complete its trajectory at the same time is close to its lower joint limit.

Possible Causes

  • The position that the axis needs to complete its trajectory at the same time is close to its lower joint limit.

Troubleshooting Steps

  1. Step 1: Change the direction of target velocity of the axis so that it is going to move back into the safe zone in next step.
    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