| 基于Modbus协议的PLC与智能仪表的通讯 |
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| 引用本文： | 吴永强,陈宏图.基于Modbus协议的PLC与智能仪表的通讯[J].汽车科技,2009(5):52-54. |
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| 作者姓名： | 吴永强 陈宏图 |
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| 作者单位： | 东风汽车有限公司,东风商用车技术中心,十堰,442001 |
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| 摘 要： | 介绍了Modbus协议的特点和SIEMENS S7—300PLC与Honeywell UDC3500智能仪表之间的通信原理，给出了采用Modbus RTU协议的通信程序，实现了S7—300PLC与智能仪表问的双向通信。
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| 关 键 词： | Modbus现场总线协议 SIEMENS PLC 智能仪表 |
Communication Between PLC and Intelligent Instruments Based on Modbus Protocol |
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| WU Yong-qiang,CHEN Hong-tu.Communication Between PLC and Intelligent Instruments Based on Modbus Protocol[J].Automobile Science and Technology,2009(5):52-54. |
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| Authors: | WU Yong-qiang CHEN Hong-tu |
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| Institution: | (Dongfeng Commercial Vehicle Technical Center of DFL, Shiyan 442001, China) |
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| Abstract: | This paper introduces the characteristics of Modbus protocol and the principle of communication between SIEMENS S7-300 PLC and intelligent instrument of Honeywell UDC3500.It presents communication program based on Modbus RTU protocol, and realized intercommunication between S7-300 PLC and intelligent instrument. |
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| Keywords: | SIEMENS PLC |
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