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廈門泰尼電氣有限公司
主營(yíng)產(chǎn)品: AB模塊PLC |
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廈門泰尼電氣有限公司
主營(yíng)產(chǎn)品: AB模塊PLC |
參考價(jià) | 面議 |
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更新時(shí)間:2018-03-07 07:50:18瀏覽次數(shù):1750
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140NRP31200---140NRP31200
140NRP31200---140NRP31200
該類產(chǎn)品市場(chǎng)上比較多,以四川德陽(yáng)四星電子產(chǎn)品SC-485C接口轉(zhuǎn)換器為例,該轉(zhuǎn)換器用于RS232到RS485/RS422通訊轉(zhuǎn)換,體積小巧,兩個(gè)DB-9插頭大小,采用串口竊電技術(shù),不需外接電源。SC-485C結(jié)構(gòu)及引腳定義如圖二所示。RS232端為DB-9孔座,可以直接插PC機(jī)COM口上,RS485/RS422端為DB-9針座, RS485時(shí)使用3腳和8腳, RS422時(shí)用3腳、8腳、1腳和7腳。利用該接口轉(zhuǎn)換器制作編程電纜如圖三所示。左側(cè)為SC-485C接口轉(zhuǎn)換器,右側(cè)從上而下分別為DIN-8、RJ11、DB-9和DB25插頭編程電纜,電纜靠近接口轉(zhuǎn)換器插頭均為DB-9孔型插頭,另一頭均為針插頭,分別對(duì)應(yīng)不同物理結(jié)構(gòu)PLC編程口。
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