应用触摸屏与PLC主站功能组态小型自动化系统

Application of Touch Screen and PLC Main Function Configuration Small Automation System

首先介绍了小型自动化系统的基本现状以及西门子S7-200可编程逻辑控制器基于Modbus RTU协议的主站功能。通过使用S7-200 PLC对多台万洲电气WGQ系列固态软起动和智能仪表进行组态监控为例,阐述了在以Modbus通信方式对设备进行远程控制时PLC主站的软件设计方法,并对编程过程中需要注意处进行了讨论。

First of all, this paper introduces the basic situation of small automation system and Siemens $7-200 programmable logic controller is based on the main function of the Modbus RTU protocol. By using $7-200 PLC in more than series electric WGQ solid-state soft starter, the monitoring and controlling of the intelligent instrument for configuration as an example, expounds the remote control of equipment in the form of the Modbus communication software design method of the PLC master station, and the need to pay attention to in the process of programming is discussed.