基于软件检测配置实现无极性的RS-485方案  

Realization of Polarity Inverse-immune RS-485 Communication Through Software Configuration-based Automatic Detection

作　　者：张保增 丁鹏飞 ZHANG Baozeng;DING Pengfei(AcrelCo.,Ltd.,Shanghai201801,China;HuaShangInternationalEngineeringCo.,Ltd.,Beijing100069,China)

机构地区：[1]安科瑞电气股份有限公司,上海201801 [2]华商国际工程有限公司(原商业部设计院),北京100069

出　　处：《电工技术》2024年第17期143-144,147,共3页Electric Engineering

摘　　要：国网标准电能表要求在RS-485线正反接的情况下都能正常通信。使用软件方法自动检测电能表RS-485信号极性并予以调整,在不改变原来RS-485电路硬件的情况下,实现RS-485线正反接的情况下都能正常通信。这种方式不需改动电路,且成本低廉、工作稳定。The State Grid standard requires that electricity meter can communicate correctly regardless the RS-485 line is connected correctly or inversely.This work verified the feasibility of realizing polarity inverse-immune RS-485 communication by automatic detection and adjustment of the polarity of RS-485 signals through software configurations.The proposed method does not require circuit and hardware modifications,and is cost-effective and stable.

关 键 词：电能表 RS-485通信 无极性 

分 类 号：TP915[自动化与计算机技术]