Stepper wiring wrong, but the motor still turns

[Max Arnold]

Hello,

for a couple of months now, my stepper motors where wired in factory setting which is:

A+ A- B+ B-

They were turning so I did not think there were any issue.
However when I looked at the duet wifi schematic it turns out the wiring should have been:

A- A+ B+ B-

I then rewired the stepper motor and it was turning just like before. How is this possible? Shouldn't the stepper stall when the wiring was in the factory setting?

[dc42]

If you swap the wires to one phase, the motor turns in the opposite direction, that's all. Similarly if you swap the A and B pairs over.

[Max Arnold]

@dc42 Yes thank you that makes sense, sorry that you needed to answer this trivial question.