IC693CHS399~GE西屋模塊!1B30023H01IC693CHS399~GE西屋模塊!1B30023H01
梯形圖編程語言優(yōu)點是直觀、簡便,但要求用帶 CRT 屏幕顯示的圖形編程器才能輸入圖形符號。小型的編程器一般無法滿足,而是采用經(jīng)濟便攜的編程器(指令編程器)將程序輸入到可編程控制器中,這種編程方法使用指令語句(助記符語言),它類似于微機中的匯編語言。
語句是指令語句表編程語言的基本單元,每個控制功能有一個或多個語句組成的程序來執(zhí)行。每條語句規(guī)定可編程控制器中 CPU 如何動作的指令,它是由操作碼和操作數(shù)組成的。
操作碼用助記符表示要執(zhí)行的功能,操作數(shù)(參數(shù))表明操作的地址或一個預先設定的值。歐姆龍、松下、三菱可編程控制器指令語句程序見表 2 。
表 2 幾種不同的可編程控制器指令語句表
?機型 | 步序 | 操作碼 (助記符) | 操作數(shù)參數(shù) | 說明 |
歐姆龍 | 1 2 3 4 5 | LD OR ANDNOT OUT END | 0000 0500 0001 0500 ─ | 邏輯行開始,動合觸點 0000 從母線開始并聯(lián)輸出繼電器的動合觸點 0500 串聯(lián)輸入動斷觸點 0001 輸出繼電器 0500 輸出,邏輯行結束 程序結束 |
松下 | 1 2 3 4 5 | ST OR ANI OT ED | X0 Y1 X1 Y0 ─ | 邏輯行開始,動合觸點 X0 從母線開始并聯(lián)輸出繼電器的動合觸點 Y1 串聯(lián)輸入動斷觸點 X1 輸出繼電器 Y0 輸出,邏輯行結束 程序結束 |
三菱 | 1 2 3 4 5 | LD OR ANI OUT END | X0 Y1 X1 Y0 ─ | 邏輯行開始,動合觸點 X0 從母線開始并聯(lián)輸出繼電器的動合觸點 Y1 串聯(lián)輸入動斷觸點 X1 輸出繼電器 Y0 輸出,邏輯行結束 程序結束 |
本公司專業(yè)銷售大型進口各種品牌DCS系統(tǒng)模塊備件:
ABB Advant OCS,ABB MOD 30/MODCELL,ABB MOD 300,ABB Bailey INFI 90,
ABB Procontic,ABB Procontrol,
H&B Contronic,Moore APACS,Moore Panel Controllers,Rosemount RS-3,
Siemens Iskamatic,Siemens Simatic S5,Siemens Simatic C1,
Yokogawa Centum XL,Yokogawa microXL,
FOXBORO I/A,GE FANUC,
Honeywell QCS,Honeywell TDC系列,Honeywell S9000,
HITACHI,Mitsubishi PLC,Motorola MVME,ALSOM MVME,Other VME,TOSHIBA等大型模組,
有著充足的庫存,交貨期快,庫存價值大約3億人民幣,查詢
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