Open cam cnc10/9/2023 If the motor does not operate as instructed there is no way for the system to know that this is occurring. This is considered a drawback to the open loop system. What distinguishes open looped from a close looped system is after the motor moves to the desired position, there is no feedback to the controller system to verify the action. The computer will relay this information to the controller which then energizes the motor. The machinist will decide what he/she wants to accomplish and will generate the g-code and the software will create the necessary steps and direction signals to perform the desired task. Refers to a system using a stepper motor, where the communication between the controller system and motor is one way. In CNC systems, open and closed loop systems describes the two primary types of control systems:
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