基于MODBUS协议的工业智能通讯模块的设计  

Design of Smart Module for Industrial Communication Based on MODBUS Protocol

作　　者：汪献忠[1] 刘巍[1] 吕运朋[1] 

机构地区：[1]郑州大学物理工程学院,河南郑州450052

出　　处：《仪表技术与传感器》2006年第6期47-49,共3页Instrument Technique and Sensor

摘　　要：文中介绍了一种利用MSP430F149和RS-485总线为硬件基础,以标准的MODBUS通讯协议来设计的工业通用数据采集通讯模块。针对工业仪表标准的模拟信号和RS-232数字信号的输出,模块把从现场仪表采集的测量数据进行软件处理并以MODBUS通讯协议组网远传。其内部采用了有效的隔离措施,模块参数通过拨码开关、按键和指示灯来进行设置。实验证明:整个模块具有系统独立、低功耗、抗干扰能力强、通讯稳定可靠等特点。A way using MSP430F149 single-chip and RS-485 bus as the base of its hardware and the standard MODBUS communication protocol to design the universe data-acquisition and communication module was introduced. According to the output of standard analog signals and RS - 232 digital signals of the industrial meters, the module can manage the data acquiring from the spot meters by software programming and then transmit them remotely based on MODBUS protocol. A kind of effective isolation measure has been taken in the module, and the module＇s parameters can be setup by dial switch, key-presses and indicator lights. The application result shows that the whole module has some traits, such as systematic independency, ultralow-power consumption, strong anti-jamming and steady communication.

关 键 词：RS-485总线 MODBUS通讯协议 光电隔离 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]