Invalid coupling parameter for auxiliary axes
Beckhoff · TwinCAT 2 NC
¿Qué significa 42F3 ?
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.
Causas comunes
- 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).
Pasos de reparación & Lista de verificación
Haga clic en los pasos para seguir su progreso.
- 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. Verify the coupling factor or gear ratio values are correct, positive, and non-zero.
- 3
3. Ensure the specified master axis ID for any coupled auxiliary axis is valid and exists within the NC system.
- 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. Save the updated configuration, download to the controller, and perform an NC reset before testing any coupled motion.