FIT1042 / M0601 direct drive hub motor

I bought a couple of motors and I have problems to communicate with them. I connected the motor data cable to a usb-485 converter connected to a jetson orin. i put toghether the GND of motor power supply (18V) and jetson power supply (12V). 

If i connected the motor 485 cable to usb converter as described in motor's manual I always had the RX led of converter powered up and I always received 00 bytes. So I switched DATA+ and DATA- and now the RX light is off and the TX led only lights when i try to transmit something.

I tried to transmit the setID command as described at the beginning after motor's power on. I tried to query the motor with check ID command but I'm unable to receive something

I tried to change the boud rate, but nothing

When I power on the motor at 18V I see a current consumption of 50mA but i can still manually move the motor.

Any help? The next step I'll try to do is to connect the motor to a microcontroller

Hi! 

You can follow the pin definitions in the Wiki Tech Spec for correct wiring.

This hub motor is controlled via the RS485 bus protocol; after powering on, you only need to send control commands in accordance with the protocol. Protocol link: FIT1042 M0601 Reference: API, Protocol & Pinout | DFRobot Wiki

For the control part, you will need a main controller that can output RS485 signals (such as an Arduino board with an RS485 module), and write programs to send control instructions based on the official communication protocol.