This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

RS485总线通信干扰问题

    项目中用到了RS485一主多从总线模式,每台从设备能接收并储存主机发送的地址,现在遇到一个很大的问题,在从机向接收总线发数据时,接收总线为低阻态,当从机发送的485芯片转为接收状态时,主机接收状态为高阻状态,在从设备温度升高和干扰严重时,接收总线一直都有数据存在,主机一直在处理串口中断。请问有什么办法能让主机接收总线为低阻态?