品牌:其他 | 規格:HP 5385A | 材質:HP 5385A |
產地:瑞士 |
HP 5385A
HP 5385A
HP 5385A
3.1 PLC和變頻器之間的RS-485通訊協議
PLC和變頻器之間進行通訊,通訊規格在變頻器的初始化中設定,如果沒有進行設定或有一個錯誤的設定,數據將不能進行通訊。且每次參數設定後,需復位變頻器。確保參數的設定生效。設定好參數後將按
1) 從PLC到變頻器的通訊請求數據
(2) 數據寫入時從變頻器到PLC的應答數據
3) 讀出數據時從變頻器到PLC的應答數據
(4) 讀出數據時從PLC到變頻器發送數據
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