6EP1333-4BA00
6EP1333-4BA00
6EP1333-4BA00
6EP1333-4BA00
第一代USB串口通信產(chǎn)品是以波仕電子的USB/RS-232轉(zhuǎn)換器為典型的。波仕電子是國內(nèi)最早從事USB/串口轉(zhuǎn)換器的開發(fā)廠家之一。型號(hào)為USB232的USB/RS-232轉(zhuǎn)換器（如圖1）用于將一個(gè)USB口轉(zhuǎn)換成為一個(gè)RS-232串行口。USB/RS-232轉(zhuǎn)換器實(shí)現(xiàn)USB與RS-232串口設(shè)備相互通訊的一種協(xié)議轉(zhuǎn)換裝置（USB協(xié)議-串行通信協(xié)議）。在通信主機(jī) (USB)和RS-232串口設(shè)備之間，無論是通信主機(jī)發(fā)送信息至指定的RS-232串口設(shè)備或是RS-232串口設(shè)備發(fā)送信息至指定通信主機(jī)，都可以經(jīng)其輕易且正確地傳輸。波仕的USB232是專門為工業(yè)通信設(shè)計(jì)制造的，特別強(qiáng)調(diào)對(duì)工業(yè)通信的適用性。比如我們用工業(yè)通信開發(fā)常用的Visual BASIC 和 Visual C++語言的Mscomm.ocx通信控件編程后進(jìn)行通信檢測(cè)，波仕的USB232可以在各種版本的Windows下很流暢地正確通信并且對(duì)RTS/CTS、DTR/DSR握手信號(hào)的控制與監(jiān)測(cè)也很正確，而有些市售的USB/串口轉(zhuǎn)換器卻不能夠通過這樣的檢測(cè)。
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