60 Real Time Web Publishing for Scada System with Comet

Web publishing for SCADA system is not new. Traditional way for web publishing uses polling mode to refresh data. This method works well in most situations, but it can not meet the SCADA system for real-time data update requirements. The solutions is plugins, but the plugins have its own problems, such as security, platform, and requires too more system resources consume to use in resource-limited devices. To improve above issues, this paper attempts to present a new way for data publishing with Comet. Our solution includes a frame of SCADA system web publishing and event triggering mode used in web communication.