485通讯资料 485通讯中一个串口可以控制多少个设备的问题是与该485网络中的电气特性和协议特性所决定的。 -485 serial data 485 can be controlled in a number of equipment problems with the 485 network and protocol characteristics of the electrical properties determined.

“工业控制网络和现场总线”这本书主要是为满足教学院校自动化，电气工程，机械电子等相关专业的高年级本科生，研究生的当前需求，也为工程技术人员阅读和学习。- Industrial Control Network and Fieldbus This book is mainly to meet the current needs of teaching colleges automation, electrical engineering, and machinery and electronics