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力力力
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樓主  發(fā)表于: 2015-01-21 19:46
如何用PLC記錄脈沖量?
就是用PLC記錄當前接收到了多少脈沖,然后在達到該脈沖量時(shí),進(jìn)行下一步的操作。
lixianji_007
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1樓  發(fā)表于: 2015-01-22 11:08
如果要高速處理(到達設定脈沖數時(shí)即時(shí)處理)的情況,讀取脈沖當前值寄存器通過(guò)比較的方法脈沖頻率高時(shí)有延遲,還是用伺服編碼器輸出端接到PLC輸入端進(jìn)行高速計數(使用高速計數比較置位指令),然后調用中斷進(jìn)行高速處理;接伺服編碼器輸出不方便時(shí)也可將脈沖輸出信號引1路到PLC輸入端做單相高速計數比較,調中斷程序處理。
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