摘要
为了应对传统现场仪表的功能升级需求，增强现场仪表与控制主机之间的通信能力，设计并实现了一款以MSP430单片机为主控芯片，使用HART调制解调器DS8500和环路供电型4～20mA数／模转换器AD421搭建HART通信协议物理层的HART从机控制器。
In order to deal with the function upgrade of the traditional field instruments and enhance the communication ability between the field instrument and the host controller, the HART slave controller is designed,which uses MSP430 microcontroller as the main control chip, and takes HART modem DS8500 and the analog converter of loop power supply type AD421 to build HART communication protocol physical layer.
出处
《单片机与嵌入式系统应用》
2015年第9期50-53,共4页
Microcontrollers & Embedded Systems
基金
江西省自然科学基金(20132BAB201045)资助
