在protool/procs中界面上的操作单元与执行器之间通过plc利用变量进行通讯，即在hmi可以直接读或写的plc上的存储地址。软件设计思想是在完成基本人机交互功能的基础上，设计了一套让操作者能够自学习操作规程的软件系统。通过人机界面，操作者即能设置一些基本的参数，如定长值、误差调整、裁断次数等，也可以监测系统的报警状态，学习系统的操作规范以及密码设置等。自动运行按照设备设计的动作流程进行自动运行控制时，一些需要调整的参数，如速度、位置等可以方便的在触摸屏上进行调整、修定。异常停止当定位模块、伺服驱动器、行程开关以及机器异常时伺服马达都应该立即停止运转，并产生异常码显示在触摸屏上，以便维修人员及时了解发生的问题。

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