Data communication method, system and device and computer readable storage medium

The invention discloses a data communication method, system and device and a computer readable storage medium, and the method comprises the steps: determining an identity label and load data in a data frame after the data frame transmitted by a transmitting end is received; a processing rule corresponding to the identity label is determined, the load data is processed according to the processing rule to obtain target data, the processing rule comprises a filtering rule and a compression difference rule, and the compression difference rule comprises a compression rule and a difference rule; and determining a forwarding rule corresponding to the identity identifier, generating a new data frame including the identity identifier and the target data, and outputting the new data frame according to the forwarding rule, the forwarding rule including at least one of a transmission protocol and a serial port. According to the invention, the data communication flexibility of the DTU equipment is improved. 本申请公开了一种数据通信方法