Lcs controls provides sequential event recorder. This recorder is used for fault analysis in dg sets, plant shut-down interlocks, esd interlocks in captive power plants, and thermal power stations. The system of this recorder has some technical features which include: accepts 32 digital inputs from the power plant and turbine and a high speed dedicated microcontroller monitors the status of these inputs at a rate of 0.15 m second.A chronological alarm printout is generated on the printer by micro 100 and displays the first alarm. Therefore, the source of the error is clearly indicated. Due to chronological event printout, the repercussions. On other inputs can be studied and analysed. Built-in real time clock with battery back up provides accurate real time stamping for the event. The system has a centronics printer port to which any standard 80 col/132 col printer can be connected.