Anaheim Automation Stepper Programmable Controllers are offered in three types: the economical PCL501 Series, which is ideal for simple stepper motor applications where minimal programming is required (offers an 18 instruction command set), the PCL511 Series which is similar but includes the index-on-the- fly feature, and the PCL601 Series, which offers a more sophisticated 40 instruction command set. The Programmable Controllers are all single-axis units, but may be daisy-chained for multi-axis applications. These Programmable Controllers offer both RS232 and RS485 bi-directional serial data bus onboard. The PCL601 Series also offers a USB version, and encoder feedback, Index-on-the-Fly and Output-on-the-Fly features. Easy-to-Use Software included FREE and readily available online. See Driver Packs on this website for programmable controllers packaged with stepper motor drivers and matched power supplies.