Human-computer interface device of small PLC

The invention discloses a human-computer interface device of a small PLC, relating to a human-computer interface device of the control system of the small PLC, which is composed on the basis of a CAN fieldbus and an embedded microprocessor ARM+FPGA. The human-computer interface device comprises a human-computer interface control module and a human-computer interface module, wherein the human-computer interface control module comprises a main controller module, a storage module connected with the main controller module, an industrial Ethernet interface module, a communication interface module and a CAN bus module; the human-computer interface module comprises an LCD liquid crystal display screen module connected with an embedded ARM microprocessor, a keyboard module and a touch screen module. The device can simultaneously configure a plurality of human-computer interface devices in the control system composed of one small PLC to realize the purpose of monitoring the controlled object on site in real time by the PLC; meanwhile, the invention can store and transmit great-volume data, is communicated with an upper computer, and displays and analyzes the dynamic operation data and history data of the controlled object.