ACS stepper drive/controller for electric actuators is capable of four, eight or 16 move command modes (absolute, incremental or jog), and has adjustable motion profile parameters (position, velocity, acceleration/deceleration, force) that are independently configurable for each move. The digital I/O is configurable in 24 Vdc opto-isolated, NPN or PNP; and the drive/controller is compatible with most brands of 24 Vdc stepper motors.