This article shows the main features of developing and running of microcontroller communicating module, which performs receiving of the messages through parallel collecting and preprocessing sensor data channels and forming and sending an integral message to subscribers for further processing. Modern competitive distributed microcomputer systems are based on hybrid net topologies. Such topologies as trees connected into bus, stars into bus, etc. These topologies have common features: the information isolation on the boundaries between parts of net, that have different net topologies, special portals for information exchange between the components of distributed system. Portals are designed using different communication devices capable of receiving, packing and transfering information, to the next topological area.