Virtual Bench Pro communication failed


I brought an eMotion kit MMP742105-24-C and a RS485 communication kit, I gave DC5V supply on RS485 interface and confirmed to make a correct wiring from 1~4: EXT_5V,B,AGND,A, but I always get the hint of communication failed, is there anything I need to set or else I missed?

Best regards

Hi newmoon002,

Thank you for contacting the MPS Forum. Not sure what is going on there, can you send us a picture of your test set up and possibly block diagram to go with it? We may need this information to better diagnose the issue and find you a solution. Please email us at if you can.

Brendan Schoemehl
Field Applications Engineer
Monolithic Power Systems | MPS Now