IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100IC693CHS397&施耐德GE*140MSB10100
可編程控制器與一般的計算機相類似，在軟件方面有系統(tǒng)軟件和應用軟件之分，只是可編程控制器的系統(tǒng)軟件由可編程控制器生產廠家固化在 ROM 中，一般的用戶只能在應用軟件上進行操作，即通過編程軟件來編制用戶程序。編程軟件是由可編程控制器生產廠家提供的編程語言，至今為止還沒有一種能適合各種可編程控制器的通用的編程語言，但是各個可編程控制器發(fā)展過程有類似之處，可編程控制器的編程語言即編程工具都大體差不多，一般有如下五種表達方式。
( 一 ) 梯形圖（ Ladder Diagram ）
梯形圖是一種以圖形符號及圖形符號在圖中的相互關系表示控制關系的編程語言，它是從繼電器控制電路圖演變過來的。梯形圖將繼電器控制電路圖進行簡化，同時加進了許多功能強大、使用靈活的指令，將微機的特點結合進去，使編程更加容易，而實現(xiàn)的功能卻大大超過傳統(tǒng)繼電器控制電路圖，是目前*普通的一種可編程控制器編程語言。
梯形圖及符號的畫法應按一定規(guī)則，各廠家的符號和規(guī)則雖不盡相同，但基本上大同小異，如圖 1 所示。
圖 1 三種不同的梯形圖
a) 歐姆龍 b) 松下 c) 三菱
對于梯形圖的規(guī)則，總結有以下具有共性的幾點，如表 1 所示，以便讀者加深對可編程控制器變成的認識和學習。
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輸入動合觸點
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輸入動斷觸點
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輸出繼電器
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輸出繼電器動合觸點
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歐姆龍
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松下
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三菱
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注釋
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歐姆龍： 00 □□表示輸入觸點
松下： X□表示輸入觸點
三菱： X□表示輸入觸點
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歐姆龍： 05 □□表示輸出觸點（或線圈）
松下： Y□表示輸出觸點（或線圈）
三菱： Y□表示輸出觸點（或線圈）
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表 1 可編程控制器部分符號意義
6ES7 321-1BH01-0AA0 USED 4
6ES7 321-1BH02-0AA0 New In Box 4
6ES7 321-1BH02-0AA0 USED 3
6ES7 321-1BL00-0AA0 New In Box 4
6ES7 321-1BL00-0AA0 USED 7
6ES7 321-5HB01-0AB0 USED 1
6ES7 322-1BH01-0AA0 New In Box 6
6ES7 322-1BH01-0AA0 USED 2
6ES7 322-1BL00-0AA0 New In Box 1
6ES7 322-1EH01-0AA0 New In Box 2
6ES7 322-1EL00-0AA0 New In Box 1
6ES7 322-1FH00-0AA0 USED 1
6ES7 322-1HH01-0AA0 USED 2
6ES7 323-1BL00-0AA0 New In Box 1
6ES7 361-3CA00-0AA0 USED 1
6ES7 361-3CA01-0AA0 New In Box 46
----------------------- Page 5-----------------------
6ES7 361-3CA01-0AA0 USED 10
6ES7 368-3BB01-0AA0 New In Box 19
6ES7 368-3BC51-0AA0 New In Box 32
6ES7 390-1AE80-0AA0 USED 3
6ES7 951-1AK00-0AA0 New In Box 1
6ES7 972-0BA40-0
xA0 New In Box 1
6ES7 972-0BB12-0
xA0 New In Box 1
6ES7 972-0CA21-0
xA0 New In Box 1
6ES7390-1AE80-0AA0 New In Box 2
6ES7392-1AJ00-0AA0 New In Box 1
6ES7392-1AM00-0AA0 New In Box 6
6EV1322-7AK00 USED 1
6EV2036-7AK New In Box 53
6EV3055-0BC USED 1
6EV3055-0DC USED 6
6EW1861-3AB USED 1
6EW1861-3BA USED 1
6FC3477-1AA-Z USED 1
6FC3551-1A6-Z New In Box 1
6FC3551-1AC-Z USED 1
6FC3551-1AC-Z USED 2
6FC3781-3AC-Z USED 1
6FC3984-3RA USED 4
6FC3988-7FA20 USED 1
6FC4100-1AA00-Z USED 6
6FC4600-0AA50 USED 6
6FC4600-0AR50 Used 1
6FC4600-1AB01 USED 6
6FC4600-1AS01 Used 4
----------------------- Page 6-----------------------
6FC5100-0AA01-0AA1 USED 2
6FC5103-0AB01-0AA2 New In Box 4
6FC5103-0AD11-0AA0 New In Box 1
6FC5110-0BA01-1AA0 USED 1
6FC5110-0BB01-0AA2 New In Box 1
6FC5110-0CB01-0AA0 New In Box 1
6FC5110-0DB02-0AA1 USED 1
6FC5110-0DB02-0AA2 New In Box 1
6FC5110-0DB03-0AA4 New In Box 1
6FC5110-0DB2-0AA2 USED 1
6FC5111-0BA00-0AA0 New In Box 1
6FC5111-0CA01-0AA0 New In Box 1
6FC5111-0CA01-0AA0 USED 8
6FC5111-0CA02-0AA0 New In Box 1
6FC5111-0CA02-0AA1 USED 6
6FC5111-0CA73-0AA1 New In Box 2
6FC5112-0CA03-0AA0 New In Box 1
6FC5114-0AA01-1AA0 New In Box 2
6FC5114-0AA02-0AA0 Used 3
6FC5147-0AA00-0AA0 New In Box 1
6FC5147-0AA00-0AA1 New In Box 1
6FC5147-0AA01-0AA0 New In Box 1
6FC5147-0AA13-0AA1 New In Box 11
6FC5148-0AA01-0AA0 New In Box 1
6FC5148-0AA20-0AA0 New In Box 1
6FC5154-0AX02-1AE0 New In Box 1
6FC5203-0AB20-0AA1 New In Box 18
6FC5203-0AB20-1AA0 Used 4
6FC5203-0AC00-0AA2 New In Box 21
----------------------- Page 7-----------------------
6FC5203-0AC00-1AA0 New In Box 1
6FC5203-0AC02-0AA0 New In Box 1
6FC5203-0AC02-0AA0 Used 1
6FC5203-0AD10-1AA0 New In Box 1
6FC5203-0AE00-0AA0 New In Box 61
6FC5203-0AE00-0AA0 USED 1
6FC5203-0AF00-0AA0 USED 1
6FC5203-0AF00-0AA1 New In Box 16
6FC5203-0AF00-0AA1 Used 1
6FC5203-0AF00-0AA2 USED 1
6FC5203-0AF02-0AA0 USED 5
6FC5203-0AF04-0AA0 New In Box 8
6FC5203-0AF10-2AA0 New In Box 1
6FC5210-0DA20-0AA1 New In Box 4
6FC5210-0DA20-2AA1 New In Box 11
6FC5210-0DA21-2AA1 New In Box 15
6FC5210-0DF00-0AA0 Used 1
6FC5210-0DF00-0AA2 New In Box 6
6FC5210-0DF00-0AA2 USED 3
6FC5210-0DF00-1AA1 New In Box 26
6FC5210-0DF00-1AA1 USED 2
6FC5210-0DF20-0AA0 New In Box 9
6FC5210-0DF22-2AA0 New In Box
6FC5210-0DF31-2AA0 New In Box 1
6FC5235-0AA05-0AA1 New In Box 1
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