Overview sequence controls
Time-controlled process: The next step in the process is active after a certain time passed. Example: The individual words are highlighted one after the other in a certain order:
Sensor-controlled sequence control: Here, the sequence control moves to the next step as soon as, for example, the end position of a cylinder is reached, the setpoint speed of a motor is reached, a certain key is pressed, etc. Since these sensor-controlled sequence controls are mainly used in automation technology, we will discuss them in more detail below.
That means, there is no case distinction to be made here in the program, and no work processes take place in parallel. As an example, let's take our well-known roller slide as an example: