Abstract: Multi-motor networking integrated control is a problem often encountered in the design of modern modular motor systems. How to achieve reliable and simple synchronous operation of multiple motors is a problem that must be considered. By expounding a set of motion control system that uses the embedded chip STM32F103 combined with the motor-specific driver chip, uses the Modbus RTU protocol for network communication to transmit data and commands, uses this communication mechanism to develop the motor controller, and builds a set of motion control systems that work together with multiple drives. Using this system, the master station can control multiple motors at the same time, and the control system is compatible with the traditional industrial controller interface RS485.

Key words: Stepper motor, Modbus, Industrial network, Multi-drive