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Subject : 
US3344i RS485 通訊連接VK1100
 
Description : 
我嘗試用RS485接線連接VK1100,但送指令並沒有反應,請問要如何連接?
 
Solution : 
US3344I的D+必須連接到VS1100的D+,D-連接到D-。
如果是D+接D-的方式就不會作用。腳位可以參考US3344I手冊第8頁。
 
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