Conveyor startup sequence SFC

A sequential function chart makes a conveyor startup sequence explicit. Each step represents the active phase, while the transition conditions state what must be true to advance. This example starts in a stopped state, checks the guard and drive conditions, then holds the run action active until a stop request arrives. It is a clear way to discuss sequence behavior before implementing detailed PLC interlocks. Before using the layout in a build or document, compare every label with the source requirements and update the drawing when parts, conditions, or materials change. The example is deliberately small so the essential relationships remain readable, easy to review with collaborators, and ready to extend with the details required for the actual project.