特种复合加工数控系统硬件模块运行状态监测

The Special Composite Machining CNC System Hardware Modules Status Monitoring

为解决对自主开发的龙门式钣金刻铣与激光切割复合加工中心开放式数控系统复杂运行状态监测问题,提出采用离散方式对影响系统运行的模块间通讯状态及系统关键特征信号进行监测。根据PLC与多轴运动控制器之间半双工通讯特点,提出设计两次"握手"方式实现它们间的串口通讯。通过实验验证了串行通讯方法的可行性,结果表明上位机能够实现对系统运行状态监测,即实现及时监测模块间通讯状态及系统关键特征信号,一定程度提高了系统的安全性。

In order to monitor complex running status for open CNC system of the self-developed planer-type sheet and laser cutting compound machining center,a discrete way was proposed to monitor traffic status of each module and key characteristic signal which affect system operation. A two ＂ handshake＂ way was proposed to achieve the serial communication between multi-axis motion controller module and PLC module,which is according to the half-duplex communication feature of the two modules. An experiment was carried to verify the feasibility of serial communication method. The results showthat the upper computer can monitor the running statuses of this system. These methods can improve the safety of this open CNC system at some extent.