摘要
简单介绍了HART通信协议的物理层、数据链路层、应用层的规范。并在对其中关键技术和器件的选择进行分析的基础上 ,重点分析了如何实现传统模拟变送器向HART协议智能变送器的改造。
The specifications of physical, data link and application layers of HART communication protocol are introduced briefly. On the basis of analysis on the selection of critical technology and device, the retrofit of traditional analog transmitter into HART transmitter is analyzed emphatically.
出处
《自动化仪表》
CAS
2005年第1期22-24,共3页
Process Automation Instrumentation
