H4- How to switch between RS485 mode?

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H4-如何切换RS485模式?

概述:适用H4-i5-8250U,i7-8550U ,该机型出厂默认6个DB 9pin RS232模式,该主板提供了 2组RS485排针,当您 需要RS485模式时,可按以下步骤切换RS485模式。
PS:切换RS485模式后 COM4和COM6 的RS232将失效!

  • 一、BIOS配置
    • 1-1、按开关按钮开机后快速敲击键盘Del键进入BIOS Setup,依次选择Advanced>ITE Super IO Configuration>将serial Port4 Conf iguration和serial Port6 Conf iguration选项下的RS-485 Auto Flow 设置为 Enabled。
  • 1-2、设置完成后按键盘 F4键 保存并退出。
  • 二、主板跳线设置+连接RS485 数据线
  • 2-1、断电状态下,拆开机箱底壳4颗螺丝即可看到主板,在主板上找到JC1和JC2排针,将该排针上的跳帽移动到pin2和pin3引脚时,可激活J485 排针 的RS485模式。
  • 2-2、RS485为2线制 半双工模式,您需准备2组 2.54mm间距的杜邦线,作为 RS485数据线引到机箱外,用于与RS485设备通信。其中一组RS485数据线插到主板 J485 排针的 D0+和D0-引脚上,D0+=RS485+(A),D0-=RS485-(B),操作系统中端口号对应 COM4。另外一组RS485数据线插到主板J485 排针的D1+和D1-引脚上,D1+=RS485+(A),D1-=RS485-(B),操作系统中端口号对应 COM6。
  • 3、如您觉得切换RS485操作比较复杂,您 可以联系我们客服人员,出厂前我们可以提前帮您切换好,并将RS485 数据线焊接到COM4和COM6的pin8和pin9引脚上,这样您可以通过COM4(pin8和pin9)和COM6 (pin8和pin9)与RS485设备直接通信。

作者: minipc

Our company is a reliable manufacturer and exporter of fanless mini computers, industrial computers, all-in-one computers and industrial tablet computers. Our products are exported to the European Union, America, Asia and other places, and enjoy a high reputation in the global market. In order to provide high-quality products and excellent services, our company has obtained reports and certificates approved by CE, FCC, RoHS, SGS, ISO9001, etc. Our goal is "innovation first, quality first, customers first, service first". We are committed to providing quality products, excellent service, competitive prices, fast response and timely delivery. We warmly welcome every customer to visit us and hope that both of us will work together to create a brilliant future. OEM and ODM orders are welcome.

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