工控大哥 Ethernet 协议和触摸屏的无线连接真是让人触电SMART 工业通讯设备让我们轻松搞定

威纶通触摸屏与S7-200SMART无线Ethernet通信方案

特别声明：本文及方案图片为达泰电子原创，转载请标明出处。

在实际系统中，同一车间内分布多台PLC，由触摸屏集中控制。由于设备距离可能达到几十米到上百米，这时采用无线通信方式更为合适。本方案以威纶通触摸屏和2台西门子S7-200SMART为例，介绍如何实现触摸屏与多台PLC的无线Ethernet通信。在此，我们将使用达泰欧美系PLC无线通讯终端——DTD418MB作为实现无线通讯的硬件设备。

一、方案概述

本方案允许用户不需更改网络参数或程序，只需通过达泰欧美系PLC无线通讯终端——DTD418MB，就能直接替换触控屏幕与PLC之间的有线以太网连接，无需进行任何编程调整。

二、测试设备与参数

西门子PLC型号：S7-200Smart × 2台

触摸屏：威纶通TK8071IP × 1台

达泰欧美系PLC无线通讯终端——DTD418MB × 3块

主从关系：1主2从

通信接口：RJ45接口

通信协议：Ethernet

供电：12-24VDC

传输距离：100米，1KM

三、达泰欧美系PLC无線通信終端—DTD418M-Brief Introduction：

The DTD418MB adopts a 2x2 MIMO wireless architecture, with an air transmission rate of up to 300Mbps. It supports the S7 protocol, Profinet protocol, and Modbus TCP/IP communication protocols. The device utilizes OFDM modulation and MINO technology to ensure reliable wireless transmission over distances of up to 1km. The DTD418MB can not only connect PLCs, DCSs, smart meters, and sensors but also work with configuration software, HMI systems, touch screens, and control terminals for point-to-point or point-to-multipoint remote wireless networking without requiring programming changes or additional cabling.

四、接線方式：

Connect the touch screen to the DTD418M via one Ethernet cable.

Connect each PLC to the corresponding DTD418M via one Ethernet cable.

五、Touch Screen Configuration:

System parameter settings: Configure IP addresses for both devices.

Create a user interface on the touch screen that displays real-time data from each connected PLC.

Assign specific functions (e.g., start/stop buttons) in relation to specific memory locations within the connected PLCS.

六、Simple PLC Configuration:

Select "System Block" mode; set IP address for one PLC as "192.168.2.x" (where x is either "10" or "11"); upload a simple program containing read/write instructions using CPU mode ("RUN").

七、Testing Methodology:

Test functionality by simulating button presses on the touch screen while monitoring output signals from connected Q points on each PLC; verify input signal reception at I points; confirm expected behavior when initiating operations through button presses or entering numerical values into input fields displayed on the touch screen.

By following this comprehensive guide detailing how to establish no-wire connectivity between your WiLinTouch touchscreen display and multiple Siemens S7-200 SMART programmable logic controllers using Dashuai Electronics' innovative DTD4168B Industrial Wireless Gateway solution!