IC693PRG300RR 模擬輸入的配線的要求

1、使用屏蔽雙絞線，但不連接屏蔽層。

2、當一個輸入不使用的時候，將V IN 和COM端子短接。

3、模擬信號線與電源線隔離 (AC 電源線，高壓線等)。

4、當電源線上有干擾時，在輸入部分和電源單元之間安裝一個慮波器。

5、確認正確的接線后，首先給CPU單元上電，然后再給負載上電。

6、斷電時先切斷負載的電源，然后再切斷CPU的電源。

PLC編程算法(3)——脈沖量的計算

脈沖量的控制多用于步進電機、伺服電機的角度控制、距離控制、位置控制等。以下是以步進電機為例來說明各控制方式。

1、 步進電機的角度控制。首先要明確步進電機的細分數，然后確定步進電機轉一圈所需要的總脈沖數。

計算“角度百分比=設定角度/360°(即一圈)”

“角度動作脈沖數=一圈總脈沖數*角度百分比”

公式為：

角度動作脈沖數=一圈總脈沖數*(設定角度/360°)

IC693PRG300RR 

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IC693PRG300RR