PSCADA double master serial port arbitration simulation system and method

Abstract

The application provides a PSCADA dual-master serial port arbitration simulation system and method. It includes: a serial port access module for configuring serial port parameters connected by serial port communication; a mode control module for updating the message forwarding path of the serial port access module when switching; a dual-master arbitration module for controlling the serial port access module to forward the first request message to the serial port slave device according to the queuing scheduling result and receive the corresponding response message; a learning storage module for outputting the response message matched with the request message based on the index information and time parameter when the dual-master arbitration module processes the request message; a protocol simulation module for protocol analysis of the request message from the original host or the new host, generating a simulation response message based on the preloaded protocol rules or the custom message template, and controlling the serial port access module to send the simulation response message back to the corresponding host. The application can avoid concurrent conflicts, improve the efficiency of modification and debugging, and improve the multi-protocol adaptation capability.

Images