摘要
以89C51为MCU的采集仪为例,分析了RS485接口电路的设计,并介绍了Modbus通信协议的实现方法。
This paper represents the application of data collection instrument, which is based on 89C51 microprocessor, including the design of RS485 interface circuit and the way to accomplish Modbus protocol.
出处
《机电工程》
CAS
2004年第6期49-50,共2页
Journal of Mechanical & Electrical Engineering