Monitoring system for point machine and methods thereof

A system and a method for monitoring a railway switch are provided to read display information of a railway switch in maintenance or failure of the railway switch by using simple operational buttons without additional sensors. A control unit(310) drives a railway switch(400). The control unit controls the direction of the railway switch. A monitoring unit(320) is connected between the control unit and at least one railway switch. The monitoring unit displays the voltage applied to respective unit of the railway switch and the voltages at normal time and operational time. The monitoring unit includes an exclusive OR circuit and a NOR circuit. The NOR circuit is connected to the exclusive OR circuit. The monitoring unit performs an interlock function as to the railway switch through the exclusive OR circuit. The monitoring unit outputs a voltage measurement as digital data through the NOR circuit.