Connect Pixhawk with BMS

#1

I would like to find out how to connect Battery Managements System - https://www.energusps.com/shop/product/tiny-bms-s516-30a-16?fbclid=IwAR37nAQLtjX_vHz2O7QCaqAq6ZiaTIZM92F5RzEolmqRhrtJbf3HLT53SZQ
to Pixhawk. I need to return datas from BMS.
Thanks in advance.