IC647IFPLRNUNLMTK,IC647IFPLRNUNLMTKIC647IFPLRNUNLMTK
潤滑油泵PLC控制系統設計過程舉例
I/O信號的地址分配表、PLC現場器件實際接線圖以及梯形圖如下圖所示。KM控制潤滑油泵電動機啟動,時間繼電器450控制潤滑時間,451控制不潤滑時間。
現場器件與PLC內部繼電器對照表
現場器件
|
內部繼電器地址
|
說明
|
輸入
|
1SB
2SB
|
400
401
|
點動控制按鈕SB
自動間歇潤滑開關S
|
輸出
|
1KM
|
430
|
啟動潤滑油泵電動機
|
PLC與現場器件接線圖:
梯形圖為:
指令程序為:
LD 401
ANI 101
OUT 430
LD 401
ANI 101
OUT 450
K 10
LD 450
OR 101
ANI 451
OUT 101
LD 450
OR 101
OUT 451
K 10
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