B&R's Steeper Module

STEPPER MODULE
X20 module is designed for bipolar, two-phase stepper motors, 1 A (24 V) or for 3 A (18-48 V) rated current. The stepper motor connections can resolve each full step into up to 256 microsteps. Additional features include automatic motor detection when booting and stall detection. The module also has four digital inputs as standard, and the integrated counter functions can connect an AB or ABR encoder as an external feedback signal.