电压表+485读写器程序.rar

上传者: 45211835 | 上传时间: 2021-05-16 17:26:13 | 文件大小: 128KB | 文件类型: RAR
电压表:基于89C52+PCF8591(量程DC:0-20V)(显示是用数码管)(写了一个菜单用来改电压表参数:报警值,报警回差,报警方式(上限报警,下限报警,遥控报警),通信地址(1-247),波特率(4800-9600-19200)校准低端,校准高端|写了EPPROM程序,掉电保存设置|写了485+MODBUS-RTU通信,支持电脑读菜单数据+写菜单数据(带校准功能的电压表程序) 485+MODBUS-RTU读写器:基于单片机+8个数码管(4个用来显示地址,4个用来显示数据)可以对支持MODBUS-RTU设备进行读写数据 有疑问加扣:伍七久三伍四伍

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