Yeah. Normally depends on wether you fit the motor on the left or right of the X table.
If I remermber correctly you can swap the wires from A+A- to B+B- and the B+B- to A+A- and that will switch the motor direction.
It's easier in Mach.
You can go into soft limits page and just check the 'reversed' box and job done.
I've also (accidentally) changed axis from 'active low' to 'active high' once, and the direction changed.