Sequencer Control - Siemens SIMATIC S7-200 Getting Started

5.3

Sequencer control

What is a sequencer control?
● A control method in which a task is broken down into very small, usually sequential,
subtasks (such as Motor on, feed on, or feed off).
● The subtasks (functions) are called steps.
● Usually one step has to be completed before the next one is started.
● A new step becomes active when the relevant transition condition is active.
● A step is active when the associated step flag, for example: M0.1 = "1".
Getting Started - Advanced
Training Documents, 09/2007, A5E01469795B
Sequencer
5.3 Sequencer control
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