MKS TMPB15-P treadmill motor control board details needed

Hi all,
Hope all doing good....

i got an salvaged treadmill without console, but having this lower motor control board "MKS TMPB15-P ".
i got to know it operates on PWM but i want to understand how to send inputs to this board for the motor to RUN, also control motor speed.

Appreciate any leads on my query..
Thanks in advance.
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