The locale instrument layer and hypogynous-machine control station, which include Siemens S7-300 PLC and field control instrument, is to accomplish data collection and field control.

• 现场仪表层和下位机控制站通过西门子S7-300 PLC、现场控制阀门和现场仪表共同完成对现场数据的采集与现场的控制。