RS-485和RS-232一样,都是串行通信标准,现在的标准名称是TIA485/EIA-485-A,但是人们会习惯称为RS-485标准,RS-485常用在工业 ...
工业现场应用中存在诸多总线应用情况,例如RS-232和RS-485转换且双向隔离、RS-485与RS-422接口共用,本文将为大家介绍这一类应用的方案,不仅简单方便,而且可以提高通信的可靠性。 高性能的RS-232与RS-485双向转换电路 图1右侧所示为RS-232/RS-485总线 ...
This whitepaper helps in understanding common design problems and transceiver features developed to solve problems for designs of RS-485/RS-422 devices designs. This could simplify the designer’s task ...
The most common method for sharing data between devices is via a digital means of communications. Several standard buses implement such methods, with the main differences between them being data rate ...
您是否希望学习 RS-485 收发器的设计教程?本文基于 TI E2E™ 社区中的常见问题提供了一些解答,对于任何希望详细了解此通信标准的人来说都是非常有用的资源。 您是否希望学习 RS-485 收发器的设计教程?本文基于 TI E2E™ 社区中的常见问题提供了一些 ...
在实际应用中需要通信的设备可能是RS-422接口也可能是RS-485接口,那么产品需要具有与RS-422和RS-485接口通信的能力,若单独留出接口位置则会使产品的体积增大,因此RS-422和RS-485共用接口是一种比较可行的减小产品体积的方法。 如图6所示,可以使用 ...
RS485是一个定义平衡数字多点系统中的驱动器和接收器的电气特性的标准,在环境监测领域有着非常广泛的应用。通过RS-485布线不仅能够在一对双绞线上进行多点双向通信,其所具有的噪声抑制能力、数据传输速率、电缆长度及可靠性也是其他标准无法比拟的。
2) And, is it possible to drive more than 32 unit loads? To answer the first question we look at a typical RS-485 data link shown in Figure 1. Figure 1. Typical RS-485 data link. Observe that, in ...
The RS-485 standard defines a popular and widely used serial data interface and network that’s been in use for over 30 years. It’s found in factories, process control plants, building automation, and ...