invers rotation X

Hello i have 2 moteur on the axis x, and i would to know if it's possible to do invers the rotation without connect 2 moteur on the breakboard ?
I want to do this in order to evaluate my machine in 5 axes and unplug the connector that i can.

thanks

YES
simply do change the WIRE on the motors

Motor 1 A+ A- B+ B-
Motor 2 A- A+ B- B+

tanks !

Doesn't swapping both phases leave the motor direction the same?

I think you need to swap only one phase.

But it's easy to try both.

But, whatever you do, never disconnect a stepper driver from the motor when it is powered up. Many of them blow up immediately.