A field bus control system based the Profibus protocol is built to control the nature gas compressor sets, and used the S7-300 PLC of Siemens Company, the devices of Profibus and industrial control computer.

• 利用西门子公司的S7-300中型PLC 可编程逻辑控制器、Profibus 现场总线设备和工控机等组建了基于Profibus 总线的现场总线控制系统。