Problem solved. XL430 freezes after a test run, dyanmixel wizard give OL error, turning off power or disable torque does not unfreeze

Hi, in my robot I have two xl430 motors and several xl330 motors. I can read from all motors. But one of XL430 freezes after a test run. I cannot get the motor moving even after I turn off the power. This approach typically works for xl330.

I try to disable the torque for the freezed xl430, but the command does not work I also try to use Dynamical wizard to move the freezed xl430 motor, the program gives “OL” error message.

Problem is solved. I manually unfreeze the motor with dynamixel wizard to turn on torque.