Abstract: A new remote concentrated metering system based on RS485 network is designed. The realization of data communication is described as the core of this remote concentrated metering system in this dissertation. It concludes several parts as follows: a local metering communication network made up of data sampler and concentrator, data remote communication and computer metering management software. Especially, the hardware design of the RS485 network data communication, the data communication between computer and data concentrator, and the computer metering management software is described in detail. Keywords: RS485; Reading System; Data Communication; Data Acquisition