西门子S7-1200 PLC通过五类双绞网线与SmartLink 的适配器相连，从而以通信的方式实现远程IO模块的控 制，在同一ProfiNet 工业以太网总线下实现数据交换。本文对控制系统的框架做了介绍，对SmartLink 远程智能IO的拓扑结构 做了说明，并介绍了如何在西门子TIA博途软件中进行硬件组态及参数设定及数据传递工程，最后以FB块的方式对多分布式 IO的执行机构做管理控制。

The SIEMENS S7-1200 PLC is connected with the SmartLink adapter by five kinds of twisted pair cable, so as to realize the remote control of IO module in communication, and realize data exchange in the same ProfiNet Industrial Ethernet bus. This paper introduces the framework of the control system, the topological structure of SmartLink remote intelligent IO in detail; introduces how to complete hardware configuration, parameter setting and data transmission in SIEMENS TIA Portal software; and completes the management control of distributed IO actuators with FB.