HollySys' LK series PLCs used for the urban pump station water supply scheduling monitoring system is divided into host computer monitoring level, PLC control level, field instrument level, and communication network level. Based on the requirements of water supply scheduling monitoring system operations of urban pump stations, the system takes into full account the reliablity, practicality, convenience, maintainablity, and expandability requirements, improving the company's level of IT automation and reducing operating costs by ensuring the control operations, data acquisition, and data updatedness, accuracy, completeness, and standardisation of the whole pump station's water supply scheduling system.

Schematic diagram of the automation system of the urban wastewater pump station