Abstract :
All engineers concerned with the design of an automated process require a clear understanding of the desired operation. The Operational Control Statement clearly expresses the control desired in a simplified, tabular form that electrical engineers and nonelectrical engineers can readily write and read. It expresses requirements for starting, sustaining, interlocking, time delay, sequenced events, shutdown, memory, and alternating events, in a concise manner. The method is quicker to write, easier to read, and quicker to review than presently used methods.