Abstract: With the development of hydrological telemetry software and the diversification of information acquisition and transmission, there is a large variety of RTUs (Remote Terminal Units) and system softwares. The normal integration, network connection, and information sharing between new system and built system are affected. In view of this, we drafted stipulations on the data transmission and software development for the hydrological telemetry system based on years of research and practice. The research is expected to solve problems for the construction of automatic hydrological telemetry system with different RTUs.

Key words: automatic data acquisition and transmission, software customization, RTU;transmission protocol, command response