Based on PLC and Ethernet Ring Network Platform a Central Pumping Station Automation System Underground

In this paper a more detailed description of the PLC and industrial Ethernet in the drainage pumping station renovation project in the application.The projeect selected S7-300 programmable logic controller as the main controller,the use of industrial ethernet ring network platform for data transfer.System,through the detection of water storage levels and other parameters to control the pump in turn work with a timely standby pump,water pump to run a reasonable schedule to ensure the safety of coal mine drainage systems.Practice has proved that the system design is reasonable,the overall safe and reliable operation,the failure rate is low,energy-saving effect significantly.