描述
6SL3120-1TE21-8AA3
打开界面的结构体系
选择界面的概念取决于多个界面。可将界面设计为循环，如果运行大量界面，必须设计一个合理的结构体系来打开界面。选择简单而永久的结构以便操作员能够快速了解如何打开界面。
用户一次处理的信息量是有限的，所以大量信息堆积在屏幕上会影响界面的友好性。为了在提供足够的信息量的同时保证界面的简明，在设计上采用了控件分级和分层的布置方式。分级是指把控件按功能划分成多个组，每一组按照其逻辑关系细化成多个级别。
用一级按钮控制二级按钮的弹出和隐藏保证了界面的简洁。分层是把不同级别的按钮纵向展开在不同的区域，区域之间有明显的分界线。在使用某个按钮弹出下级按钮的同时对其他同级的按钮实现隐藏，使逻辑关系更清晰。
通常要由3个层面组成。层面1是总览界面。该层面要包含不同系统部分在系统所显示的信息，以及如何使这些系统部分协同工作。层面2是过程界面。该层面包含指定过程部分的详细信息，并显示哪个设备对象属于该过程部分。该层面还显示了报警对应的设各对象。层面3是详细界面。该层面提供各个设备对象的信息，例如控制器、控制阀、控制电机等，并显示消息、状态和过程值。如果合适的话，还包含与其他设备对象工作有关的信息。
产品承诺：
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主营DCS系统配件
机器人系统配件
大型伺服系统配件
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