温湿度变送器SHT20传感器模块rs485_modbus无法读取数据

txwtech 发布时间：2019-07-04 18:59:20 ，浏览量：4

解决方法：

1.确保供电正常

DC4-DC30

2.确保连接正常。

红色-电源正极

黑色-电源负极

黄色：RS485_A或RS485+

白色：RS485_B或RS485-

3.确保COM端口选择正确

然后参考手册查看数据与设置：

如果不行：可以发送 BR:9600 重置波特率

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温湿度变送器SHT20传感器模块rs485_modbus无法读取数据

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