M340 Pulse Train Output - Motion Module This module provides a square wave pulse train output to drive either a stepper or servo system for a specified number of pulses and a specified cycle time. It can be programmed to produce either one train of pulses or a pulse profile consisting of multiple trains of pulses.,For example, a pulse profile can be used to control a stepper motor or servo-motor through a simple ramp up, run, and ramp down sequence or more complicated sequences.,The control positioning is achieved according to an open loop mode meaning without the need of feedback information on the real position of the mobile.