| 摘要 |
<p>A process control system uses a controller 22 to receive state information for a plurality of elements or machines 14 and to generate control data or signals for the elements or machines 14. Sequence checks and interlock checks may be performed to generate additional control information to ensure correct working of the elements or machines 14. Additional inventions relate to a graphical interface for the process, a graphical interface recording positions and movements of a human operator, and the structure of the control data.</p> |
