Abstract: A system and methods for recording Modbus communications. An example system includes a master controller and a gateway device coupled to a network. A slave device capable of Modbus communications is provided. A gateway device is coupled to the network. The gateway device includes a slave communications interface coupled to the slave device and a log that records data relating to communications between the master controller and the slave device. The data includes a network address relating to the master controller and a Modbus address of the slave device.

Abstract: A method and system to provide web-based real-time monitoring data from an electrical power system. An example method provides real-time data from an electrical power system via a web server to web based client. The web server is accessed to receive a webpage interface. Data is sensed via a monitoring device in the electrical power system. The sensed data is requested by the web-based client. The sensed data is transmitted over a network via an open port to the webpage interface of the web-based client.