现场总线运动控制模块的设计及其在PLC系统中的应用

Design of fieldbus NC controller and its application on PLC system

针对中低端机床大规模生产的需要,设计了带有现场总线接口的运动控制模块。该模块以2片STM32微控制器组成双CPU系统,采用SD卡作为大容量数控程序存储介质,兼容Modbus-RTU协议,具有较高的性价比。实验结果表明,该控制器能完全替代传统基于PC机的单机控制器。

For the demand of massive production of low-end NC, NC controller with fieldbus interface has been designed. Two STM32 microcontrollers compose of dual-CPU system. SD card is used as a storage of high-capacity NC program. And Modbus- RTU protocol is compatible. So the module is high cost-effective. The research shows that NC controller can completely replace traditional stand-alone-PC-based controller.