Integration of industrial automation fieldbuses with different technologies
This paper presents an integrated solution of industrial automation fieldbuses with different technologies. This solution is obtained by the connection of an Industrial Ethernet fieldbus with a classic fieldbus, through the compatibility of software and hardware. The compatibility is achieved through the advances of the AXC1050PN fieldbus controller (Phoenix Contact) which is able to communicate over PROFINET and Modbus TCP/IP protocols and the programming of the Modbus RTU protocol, by software, in the Siemens S7-200 PLC, in freeport mode, creating a bridge between both devices and their inputs/outputs variables. The development of this solution allows access to all existing equipment through a commercial Ethernet fieldbus and the control of the S7-200 from other equipment of the fieldbus, assigning new features to this controller that originally didn’t have this capability.