Stepper systems (motor + drive) are open-loop systems which accept digital step & direction inputs provided by an "indexer" or "motion controller" which is basically a programmable pulse generator.
Step & direction commands are typically generated from a PLC (programmable logic controller), signal generator, PC or programmable motion controller.
The sequence of command pulses is "translated" into motion of the motor by the drive ("translator"). The result is a very cost-effective all-digital Smart Motion System.
Electromate is a supplier of stepper drives & systems such as microstep drivers, drivers with oscillators, and more. For more information, speak with an expert today.