摘要
RS485总线目前已经在工业自动化领域得到广泛应用,但在实际应用中,因各种因素造成通信的可靠性不高。针对其不足,在阐述了RS485总线规范的基础上,站在实际应用的角度,重点从阻抗匹配、失效保护、地线与接地、瞬态保护以及通信规则等几个方面,分析说明了RS485总线的数据传输的可靠性。
Bus RS 485 is applied extensively in the field of industrial automation. In practical applications, however, the reliability of communications is restricted by several factors. This paper describes the standard of bus RS 485 and analyzes the reliability of data transmission for bus RS 485 from the aspects of impedance coupling, in- validation protection, ground wire and grounding, instantaneous state protection and communications rules.
出处
《电子科技》
2009年第2期8-10,22,共4页
Electronic Science and Technology
