How to calibration Dynamixel 2XL430?

I have an issue degree with my servo 2XL430, when I open Dynamixel Wizard 2.0 it can’t be chosen for ‘Calibration’ but I can choose ‘Self-Diagnosis’.
What can I do to calibrate it?

I have a Dynamixel XL430 and it is worth for calibration.

Hello nuraziz,

Calibration requires that only one DYNAMIXEL servo is connected to the wizard at the time of calibration. In the case of the 2XL430 it will always report as two DYNAMIXEL units connected at the same time.

Perhaps @willson will have a suggestion for how to work around this limitation and calibrate the 2XL430 using DYNAMIXEL wizard.