BQ40Z50EVM-561: Battery Management Studio not recognizing EVM

Hello,

I have followed the quick set-up instruction on the EVM user guide to connect my EVM to BMS, however, the EV2400 is recognized but there's no communication between the BQ40Z50 and the BMS. Why is it not being recognized? 

Note: I left the SYS-PRES floating and I am using 1k resistors and a power supply to simulate the cells. 

Thanks,

Daniel Rios