Modular data transfer system with separate energy supply for each connected module

摘要

#CMT# #/CMT# The system (5) has a bus node (10) including a transmitter for wireless transmission of data. Another bus node (20) includes a receiver for wireless reception of data. The nodes are detachably fixed on a mounting rail (2) such that the nodes are arranged adjacent to one another in a row. One of the nodes is detachably connected to a bus receptacle (130). An electrical mating connector is coupled to an electrical connector of one of the nodes in order to transmit electrical energy, and a positioning device is provided for positioning the nodes. #CMT#USE : #/CMT# Modular data transmission system i.e. local bus system, for use in switchgear cabinet. #CMT#ADVANTAGE : #/CMT# The bus nodes of the system are coupled to the bus receptacle that positions the corresponding bus node with respect to the adjacent bus nodes, thus ensuring that the modules are precisely positioned relative to one another, hence ensuring reliable supply of energy to modules and ensuring essentially error-free data transmission between the modules. The bus receptacles transmit electrical energy from or to the respective bus nodes even in failure of one of the bus nodes by utilizing emergency shutdown technique. The system allows supply of energy via a magnetic path that allows the bus nodes to be electrically isolated from a backplane bus, thus providing electrical isolation between the logic circuit and the peripheral components in the modules and bus nodes. The bus receptacle is detachably fixed on the mounting rail, thus providing compact and space-saving design for the system. The system supports bidirectional data transmission between the bus nodes by utilizing transmitters and receivers in the respective nodes. The system supports contact less transmission of clock information for synchronizing the bus nodes. The transmitter and/or receiver of each bus node are respectively designed for transmitting or receiving differential signals, thus supporting high-speed data transmission. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a perspective view of several bus nodes that are arranged adjacent to one another in a row on a mounting rail. 2 : Mounting rail 5 : Modular data transmission system 10, 20, 30 : Bus nodes 130 : Bus receptacle.