摘要
RS4 8 5总线以其结构简单、通信速率高、传输距离远等诸多优点 ,在工业控制系统中得到了广泛应用。因其通信方式大多是半双工的 ,解决其总线数据传输的冲突 ,即通信避障 ,就成了提高其工作可靠性、稳定性的关键和前提。RS4 85总线系统一般采用一个主节点、多个从节点的数据传输方式。这种工作方式在很多工业控制场合有较大的局限性。
The RS485 Bus is widely used in the field of industrial controlling system,due to it's simple structure,high communication rate,long distance communication,etc.Because of the half duplex communication mode,it is important to solve the problem of communication conflict,so as to improve the reliability and the stability of the system.Normally,the master slave mode is adopted.But it has same limitation.A kind of multi master communication mode to avoid the limitation is introduced.
出处
《测控技术》
CSCD
2002年第8期41-43,共3页
Measurement & Control Technology
