Abstract: The present invention relates to a unique and novel PC based software solution interface with embedded DSP based Online UPS system. In the present invention, a single DSP is used to control the Online UPS and further to communicate with the PC based software which enables direct transfer of real-time values of parameters to the PC. Such direct transfer of data is accomplished through a dedicated communication protocol that is implemented both inside the DSP chip, and in the monitoring software. As the DSP can process the information very fast, the processing of all the data can be completed by the DSP and transferred to the monitoring software. The requisite provisions are made in the DSP embedded chip inside the Online UPS system so as to receive the data from the Monitoring system and correspondingly change the Output voltage/Frequency, Battery Low level and battery high level.