Invalid coupling parameter for auxiliary axes

What does 42F3 mean?

The coupling parameters configured for the auxiliary axes are inconsistent. These parameters define how auxiliary axes are linked or synchronized with other axes (e.g., master-slave, gearing), and an invalid setup will lead to improper synchronized motion, position errors, or loss of coordinated control.

• Coupling factor (e.g., electronic gear ratio numerator/denominator, master-slave ratio) for an auxiliary axis is set to an invalid value (e.g., zero, negative).
• Mismatch in the number of teeth or pitch for electronic gearing setup between the master axis and the auxiliary axis.
• Referencing an invalid or non-existent master axis ID for an auxiliary axis configured in a slave role.
• Inconsistent units or scaling factors used in coupling definitions between different axes, leading to incorrect synchronization.
• PLC program attempting to establish a coupling with mathematically unresolvable parameters (e.g., division by zero in ratio calculation).

Click steps to track your progress.

1. 1

   1. Open the NC group or individual auxiliary axis configuration and review all coupling parameters (e.g., electronic gear numerator/denominator, master axis ID).

2. 2

   2. Verify the coupling factor or gear ratio values are correct, positive, and non-zero.

3. 3

   3. Ensure the specified master axis ID for any coupled auxiliary axis is valid and exists within the NC system.

4. 4

   4. Check for consistency in units and scaling when defining coupling parameters (e.g., encoder increments per revolution, motor revolutions per unit).

5. 5

   5. Save the updated configuration, download to the controller, and perform an NC reset before testing any coupled motion.