646058138
級別: 探索解密
|
西門子PLC300。上位(vb)從PLC讀上來的數據是倒的?或者說,PLC存儲器高低位和別人的是反著的?見下。謝謝 這是上位要往PLC寫數據之前的操作,需要把數據倒過來一下。 CopyMemory pReadBuffer1(0), a, 4 pReadBuffer(0) = pReadBuffer1(3) pReadBuffer(1) = pReadBuffer1(2) pReadBuffer(2) = pReadBuffer1(1) pReadBuffer(3) = pReadBuffer1(0) MyHex = field_write_ex6(100, 2, 20, 12, 12, pReadBuffer(0)) 求介紹西門子存儲器 是倒著的 詳細學習資料(網址也可喲)謝謝! 郵箱 646058138@qq.com |
---|---|
|