1.设计和功能

SIMATIC S7-1200 系统有三种不同，分别为 CPU 1211C、CPU 1212C 和 CPU 1214C。其中的每一种都可以进行扩展，以*您的系统需要。可在任何 CPU 的前方加入一个信号板，轻松扩展数字或模拟量 I/O，同时不影响控制器的实际大小。可将信号连接至 CPU 的右侧，进一步扩展数字量或模拟量 I/O 容量。CPU 1212C 可连接 2 个信号，CPU 1214C 可连接 8 个信号。后，所有的 SIMATIC S7-1200 CPU 控制器的左侧均可连接多达 3 个通讯，便于实现端到端的串行通讯。所有的 SIMATIC S7-1200 硬件都有内置的卡扣，可简单方便地安装在标准的 35 mm DIN 导轨上。这些内置的卡扣也可以卡入到已扩展的位置，当需要安装面板时，可提供安装孔。SIMATIC S7-1200 硬件可以安装在水平或竖直的位置，为您提供其它安装选项。这些集成的功能在安装过程中为用户提供了较节省空间的设计。

2.可扩展的紧凑自动化的化概念

SIMATIC S7-1200 具有集成的 PROFINET 接口、强大的集成技术功能和可扩展性强、灵活度高的设计。它实现了简便的通信、有效的技术任务解决方案，并能*一系列的独立自动化需求可扩展性强、灵活度高的设计较大的 CPU 较多可连接八个信号，以便支持其它数字量和模拟量 I/O，可将一个信号板连接至所有的 CPU，让您通过在控制大的灵活性，并使 SIMATIC S7-1200 为各种应用提供了实用的解决方案。.

器上添加数字量或模拟量 I/O 来自定义 CPU，同时不影响其实际大小。SIMATIC S7-1200 提供的化概念可让您设计控制器系统，以*您应用的需求。

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