| 基于RS485的小型PLC ModBus总线通信与实现 |
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| 引用本文： | 杨帆.基于RS485的小型PLC ModBus总线通信与实现[J].广东轻工职业技术学院学报,2012(4):20-23. |
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| 作者姓名： | 杨帆 |
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| 作者单位： | 广东省职业技能鉴定指导中心 |
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| 摘 要： | ModBus作为一种开放式通信协议，愈来愈多地被小型PLC厂家选用，并逐渐成为产品的标准配置之一。首先介绍了汇川H2U系列PLC的ModBus总线通信技术，然后给出了实现H2UPLC与MD320变频器ModBus总线通信的硬件连接、变频器参数设置以及PLC通信程序。实际应用表明该方案工程实现容易、性价比高。
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| 关 键 词： | PLC Modbus协议 RS485总线 变频器 |
Bus Communication and Achieve of the Small PLC ModBus Based on RS485 |
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| YANG Fan.Bus Communication and Achieve of the Small PLC ModBus Based on RS485[J].Journal of Guangdong Industry Technical College,2012(4):20-23. |
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| Authors: | YANG Fan |
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| Institution: | YANG Fan(Guangdong Occupational Skill Testing Authority,Guangzhou 510115,China) |
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| Abstract: | ModBus is increasing to choose by small PLC manufacturers as an open communication protocol, and becoming to one of the standard configuration of the product. Firstly the paper introduces bus communication technology of inovance H2U series PLC ModBus, and then achieves hardware connection,inverters parameter settings and PLC communication program of the H2U PLC and MD320 inverter ModBus bus communication. Practical application shows that the program works easily and cost -effectivly. |
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| Keywords: | PLC Modbus protocol RS485 bus inverter |
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