USB-RS232 configure connection

<p>USB-RS232.Cable Connection: <img src="https://www.showdoc.com.cn/server/api/attachment/visitfile/sign/9b667805f49c64747eb1f0206bf7770a?showdoc=.jpg" alt="" /> <img src="https://www.showdoc.com.cn/server/api/attachment/visitfile/sign/ba48107bd388b0baf9b5f214812b8098?showdoc=.jpg" alt="" /> <img src="https://www.showdoc.com.cn/server/api/attachment/visitfile/sign/01e56984c63b7d264ea16d5e8990c0a6?showdoc=.jpg" alt="" /> <img src="https://www.showdoc.com.cn/server/api/attachment/visitfile/sign/b5aec7366df2e83b02f275437a6d49cf?showdoc=.jpg" alt="" /></p>