From what I understand, how the 9 wires of the BLDC encoder connect to the TMCM board will depend on the relationship between the A+ and A- wires. For example, if the A+ and A- channels are with respect to ground, then the A-, B-, and Z- wires of the encoder can be left floating (i.e. not connected to the TMCM board). However, if the A+ and A- channels are with respect to each other – that is, if they are differential pairs – then the A-, B-, and Z- wires should all be shorted to GND on the TMCM board. In both cases, I understand that the "shield" wire should short to GND as well.
My question is two-fold: first, is my understanding of the above connection scheme correct? Second, I would appreciate confirmation on how the BLDC's encoder wires are referenced: are the A+ and A- wires with respect to ground, or are they differential pairs? For convenience, I have attached the pinout of the encoder for both the TMCM board and the BLDC motor to this request ticket.
Any help on this subject matter would be greatly appreciated!
