Multifunctional instrument with IO interface

The utility model discloses a multifunctional instrument with an IO interface, which comprises a power module, a main control module, an IO module, a CAN communication module, a key module and a display module, wherein the display module comprises a liquid crystal display module and an LED indication lamp; the power module, the IO module, the CAN communication module, the key module, the liquid crystal display module and the LED indication lamp are all connected with the main control module; the main control module acquires output signals of a sensor or controls the condition amount of the key via the input port of the IO module; the main control module is connected with a CAN bus via the CAN communication module, communicates with an upper computer based on the CAN bus, receives instructions from the upper computer, and controls output of the output port of the IO module and display information of a display screen. The multifunctional instrument with an IO interface is applied to a platform operation module for an overhead operation platform, and has the advantages that the display information amount is large; the IO control function is provided as the IO module is integrated; integration is high; and miniaturization design of the platform operation module for the overhead operation platform is facilitated.