Abstract: Aiming at the imperfection and poor openness of the communication system required for the coordinated control of the inverter motor all-in-one used by scraper conveyor, the design scheme of communication system used for the coordinated control of the all-in-one based on CAN communication standard protocol-CANopen specification is proposed and the architecture of CANopen protocol is analysed. Using the usart peripheral of embedded microcontroller STM32F407 in the monitoring unit to drive the CANopen integrated communication unit GCAN-305, the hardware and software design of the mining all-in one CANopen communication interface is completed. Experiments show that the all-in-one communication interface based on GCAN-305 complies with the CANopen protocol and meets the reliability and standardization requirements of the mine all-in-one cooperative control data communication.