Event-based motion studies are defined with a set of motion actions resulting from triggering events. Create an event-based motion study when you do not know the exact time sequence for element changes. You can obtain the time sequence for element changes by calculating an event-based motion study.
For example, in a manufacturing process that includes components moving along a conveyor belt, motors turn on or change according to component position along the belt. However, since you do not know the exact time at which a component reaches a position before calculating the motion, you cannot determine the time to change the motor value. Without knowing the exact times to turn on or change a motor, you cannot create a time-based motion study. However, you can use an event-based motion study to model the conveyor assembly motion.
For the conveyor belt model, you can:
- Define proximity sensors to monitor component position.
- Define triggers based on sensor values.
- Define constant speed or servo motors for the model.
- Define actions that turn on or change motor values when triggered by sensors or according to a schedule.
Before specifying a motor action in response to a trigger in an event-based motion study:
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In an event-based Motion Study, enter the task name and description and set up the task trigger. For example, define a proximity sensor trigger, which triggers an action based on component position.
- Define the motor you intend to assign to the task action. For example, define a displacement servo motor.
To define a task action that changes a motor value in response to a task trigger: