The Motor Torque is not measured by the Drive. It is calculated from the measurement of Motor Current and the estimated Speed (or measured speed in close loop).

OTR % (Motor Torque) = (Iq / Iqn) * (PhirdRef / Phirn)

Where:
Iq = Current Torque provide by the command to drive motor.

Iqn = Nominal Current Torque computes with the motor name plate

PhirdRef = Flux provide by the command to drive motor

Phirn = Nominal flux of the motor