Programmable logic controller (PLC) control system of electric motor

The utility model discloses a programmable logic controller (PLC) control system of an electric motor. A digital quantity input module, an analog quantity input module and a digital quantity output module are arranged on the control system, in addition, the control system carries out information data transmission with a central processing unit (CPU)224 memory through a system bus, a power supply module supplies electricity to the PLC control system through the system bus, the CPU224 memory is connected with a programmer through a data wire, starting or stopping signals and state signals of the electric motor are transmitted to the digital quantity input module through the data wire, sampling equipment collects the current or the voltage of the electric motor, in addition, the current or the voltage is transmitted to the analog quantity input module through the data wire, and the digital quantity output module transmits control signals back to the electric motor through the date wire. The PLC control system ha