URM07 timeout on BeagleBone Blue

Hi, i need help in connecting ultrasonic sensor URM07 (https://www.dfrobot.com/wiki/index.php/ ... U:_SEN0153) in BeagleBone Blue, im getting timeout from sensor even seems to be connected in my case to UART5

[email protected]:/home/debian/scripts/ultrasonic# rc_uart_loopback 5

testing UART bus 5

Sending 11 bytes: Hello World
reading bytes:
Received 9 bytes:

but when im sending commands im getting timeout

[email protected]:/home/debian/scripts/ultrasonic# ./rc_test_ultrasonic

Ultrasonic testing UART bus 5

Sending 6 bytes
reading bytes:
timeout reached, 0 bytes read