MODBUS is an open protocol used around the world and supported by many different manufacturers. Along with MODBUS, MODBUS/TCP was developed for use in modern networks. This protocol now ranks as an open Internet draft standard introduced to IETF, the Internet Engineering Task Force responsible for Internet standardization. As a result, manufacturers and users everywhere are free to implement this open protocol, and many leading manufacturers have already taken advantage of this opportunity. With the increasing popularity of Ethernet communications in both industry and offices, MODBUS/TCP is enjoying an increasingly broad use in all industries. In particular heterogeneous system landscapes are typical areas of application.
SIMATIC S7 on MODBUS/TCP networks
Networking SIMATIC S7 to other systems via MODBUS Industrial Ethernet is a very attractive option, especially when
So far, however, SIMATIC S7 systems didn’t feature MODBUS/TCP for Industrial Ethernet as a standard. Therefore we have now designed an interface solution.