Communication gateway for transforming e.g. Modbus message, in Internet protocol network, has processing unit transforming Modbus message into another message to be sent to address of automatism equipment using correspondence table

摘要

The gateway (10) has a storage unit e.g. Flash memory, for storing a correspondence table (15) between identification information and corresponding local Internet protocol address. A processing unit extracts the identification information of automatism equipment (35) contained in a modbus frame of a modbus or Transmission Control Protocol message received by an interface (12) and transforms the received message into another Modbus or TCP message to be sent to the corresponding IP address of the equipment using the table. An independent claim is also included for a communication method implemented in a communication gateway.