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2310036294
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樓主  發(fā)表于: 2016-09-18 22:35
客戶(hù)提供一個(gè)掃碼槍USB借口的，怎么與PLC通信，要買(mǎi)個(gè)USB轉485的模塊嗎。
可是USB轉485后，掃碼槍的電源怎么辦，不用管嗎，485插到PLC上，由PLC提供電源嗎
懷疑他們的掃碼槍是隨便買(mǎi)的，對品牌有要求嗎
[ 此帖被2310036294在2016-09-18 22:41重新編輯 ]
zsb2010
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1樓  發(fā)表于: 2016-09-19 06:45
USB條碼槍你用USB轉485模塊連接PLC肯定不行的
最簡(jiǎn)單就是把USB條碼槍扔掉，重新購買(mǎi)一個(gè)RS485的條碼槍?zhuān)驗?00PLC的通信口是485的，正好對應上
如果買(mǎi)不到485的可以考慮購買(mǎi)RS232的條碼槍?zhuān)@個(gè)時(shí)候需要在購買(mǎi)一個(gè)RS232轉485模塊
232這端連接條碼槍?zhuān)?85這端連接PLC的通信口
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