A communication system having a redundant structure capable of preventing loss of communication data between processors

摘要

The present invention relates to a communication system having a redundant structure capable of preventing loss of communication data between processors in a duplex switching by implementing a main processor, a communication control device, a memory device, and a duplication control device in an integrated structure. To this end, the communication system includes a communication matching unit for performing matching processing so that communication data between processors can be transmitted and received between the inter-processor network and the communication system when the communication system is active; A central control unit; When the communication system is in an active state, storing data to be written and read from a central control unit provided in the communication system and interprocessor communication data to be transmitted and received through the communication matching unit, A memory for updating the contents stored by the data transmitted from the counterpart communication system; A first buffer for writing data written to and read from the memory to a correspondent communication system; And a main processor module including a duplication control unit controlled by the central processing unit and transmitting / receiving a duplication control signal to / from the other side communication system.