An Introduction to the GRAPH Language in TIA Portal (Sequential Function Chart)

In industrial automation, the five IEC 61131-3 languages are pivotal tools for control system programming. Among these, Sequential Function Chart (SFC) language, often called GRAPH in the Siemens environment, plays a significant role. SFC provides a graphical representation of sequential control logic, breaking it down into Steps (actions) and Transitions (conditions). These visual elements offer a powerful way to design and implement sequential control logic for industrial automation tasks.

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