基于PLC与触摸屏的条码测控系统设计  

Design of Bar Code Measurement and Control System Based on PLC and Touch Screen

作　　者：江文艺 李娟 Jiang Wenyi;Li Juan(Yangjiang Strong Jelly Manufacturing Co.,Ltd.,Yangjiang,Guangdong 529900,China)

机构地区：[1]阳江喜之郎果冻制造有限公司,广东阳江529900

出　　处：《机电工程技术》2022年第11期167-170,共4页Mechanical & Electrical Engineering Technology

摘　　要：针对包装膜图案相似和产品条码字体小,人工进行条码检查对比所需时间长,长时间用眼时容易疲劳出错,转换品种生产时容易用错包装膜。采用USB接口连接线的霍尼韦尔1910i条码扫描器,与设备原有控制系统的威纶通MT6071iP触摸屏、三菱FX3U-32MT PLC,设计了一套条码测控系统,对包装膜的条码数值进行扫描读入到触摸屏后,通过触摸屏定时将条码数值传送到PLC的数据寄存器中,由触摸屏的存放序号和确定存入进行条码库的建立,由触摸屏的选取序号和确认生产进行生产条码的选取调出,由数据块比较指令对选取的生产条码数值与使用的包装膜条码数值进行对比,当比较结果一致时设备才可以正常启动进行生产,当比较结果不一致时立即使设备停止。实践表明,基于PLC与触摸屏的条码测控系统稳定性好、操作简单方便,对条码的扫入和对比控制反应时间小于1 s,实现了精准的防错控制,降低了员工的劳动强度,提高了生产效率。For similar packaging film patterns and small product barcode fonts,it takes a long time for manual barcode inspection and comparison,and it is easy to make mistakes when using eyes for a long time,and it is easy to use the wrong packaging film when changing varieties for production.Honeywell 1910i barcode scanner with USB interface connecting line,together with VILON MT6071iP touch screen and Mitsubishi FX3U-32MT PLC of the original control system of the equipment,a set of barcode measurement and control system was designed.After scanning and reading the barcode value of the packaging film into the touch screen,the barcode value was regularly transmitted to the PLC data register through the touch screen,and the barcode library was established by the storage number and confirmed storage of the touch screen,the serial number from the touch screen was selected and the production to select the production barcode was confirmed.The data block comparison command compared the selected production barcode value with the used packaging film barcode value.The equipment could be started normally for production only when the comparison results were consistent,and the equipment could be stopped immediately when the comparison results were inconsistent.The practice shows that the barcode measurement and control system based on PLC and touch screen has good stability,simple and convenient operation,and the response time for scanning and contrast control of barcode is less than 1 s,which realizes accurate error prevention control,reduces the labor intensity of employees,and improves the production efficiency.

关 键 词：PLC 触摸屏 条形码扫描器 测控系统 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]