422 and 485 Standards Overview and System Configurations. ANSI TIA/EIA-422 and TIA/EIA-485 standards, commonly known as 422 and 485, respectively. Techniques for impedance matching to minimize line reflections in several applications are presen

综合布线系统的标准,综合布线系统布线时参考- Generic Cabling System standard, reference by wiring cabling system

RS-485标准最初由电子工业协会（EIA）于1983年制订并发布，后由TIA-通讯工业协会修订后命名为TIA/EIA-485-A，-The RS-485 standard initially by the Electronic Industries Association ( EIA ) enacted in 1983and released, followed by TIA- Communications Industry Association after revision named

RS-485标准，增加了多点、双向通信能力，即允许多个发送器连接到同一条总线上，同时增加了发送器的驱动能力和冲突保护特性，扩展了总线共模范围，后命名为TIA/EIA-485-A标准。本代码用c语言编写，描述出rs485通讯原理。-RS-485 standard, multi-point, two-way communications capability, which allows multiple transmitters connected to the same bus, while in