DCS卡件Invensys Foxboro I/A Series P0914WP Module FBM241d Channel Isolated 8 Input
DCS卡件Invensys Foxboro I/A Series P0914WP Module FBM241d Channel Isolated 8 Input
DCS卡件Invensys Foxboro I/A Series P0914WP Module FBM241d Channel Isolated 8 Input
本文提供了個(gè)梯形圖編程原則與PLC程序設(shè)計(jì)方法。
(1) 輸入/輸出繼電器、內(nèi)部輔助繼電器、定時(shí)器、計(jì)數(shù)器等器件的觸點(diǎn)可以多次重復(fù)使用,無(wú)需復(fù)雜的程序結(jié)構(gòu)來(lái)減少觸點(diǎn)的使用次數(shù)。(2) 梯形圖每一行都是從左母線開(kāi)始,線圈終止于右母線。觸點(diǎn)不能放在線圈的右邊,如下圖所示
正確的電路
錯(cuò)誤的電路
(3) 除步進(jìn)程序外,任何線圈、定時(shí)器、計(jì)數(shù)器、高級(jí)指令等不能直接與左母線相連。
(4) 在程序中,不允許同一編號(hào)的線圈兩次輸出(雙線圈輸出)。下面的梯形圖是不允許的。
(5) 不允許出現(xiàn)橋式電路。
(6) 程序的編寫(xiě)順序應(yīng)按自上而下、從左至右的方式編寫(xiě)。為了減少程序的執(zhí)行步數(shù),程序應(yīng)為左大右小,上大下小。如:
符合左大右小的電路,共4步
(7) 輸入設(shè)備盡可能用常開(kāi)觸點(diǎn)
(8) PLC程序設(shè)計(jì)常用的經(jīng)驗(yàn)設(shè)計(jì)法
在傳統(tǒng)繼電器-接觸器控制圖和PLC典型控制電路的基礎(chǔ)上,依據(jù)積累的經(jīng)驗(yàn)進(jìn)行翻譯、修改和完善,得到zui終的控制程序。
(9) 常用的PLC典型控制電路
INVENSYS WONDERWARE ARISTA 19" WW-TPC FANLESS PANEL COMPUTER ARP-2219AP D00-005
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INVENSYS VERPXL-010 VERPXL010
INVENSYS VER-PHP-100 VERPHP100
INVENSYS VC-7213-401-4-09 VC7213401409
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Invensys Vb-7313-000-4-08 1" Full Port 3 Way Mixing Valve Screwed End (T53)
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Invensys VB-7211-000-4-06 Valve Body 3/4 Inch, Full Port, 2-Way, Stem Up !
INVENSYS VB-7211-000-4-02 VB7211000402
INVENSYS VB-7211-000-3-04 VB7211000304
INVENSYS VALVE LINKAGE AV-600-0-0-2 * IN BAG*
Invensys Valve Body VT2322 3/4" NPT
INVENSYS VALVE BODY 7213-000-4-9 IN THE BOX
INVENSYS VALVE BODY 7213-000-4-4
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INVENSYS VALVE ASSY 1 1/4" FULL PORT,2 WAY,SYSTEM UP CLOSED, 20 VC, SS/TRIM TFLN
Invensys UNC-520-2 Jace With Enclosure
INVENSYS TX-400-400 TX400400
INVENSYS TX-400-400 TX400400
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INVENSYS TSMN-58011-0-0-1 TSMN58011001
INVENSYS TSMN-58011-0-0-1 TSMN58011001
INVENSYS TS-8204-0-0-1 TS8204001
Invensys Triconex 3000745-100 310SV Programmable Controller
Invensys TOOL-100-500 Pneumatic Calibration Panel - t.a.c. TOOL-100
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Invensys TK-1003-0-2 Pneumatic Thermostat 8751
INVENSYS Thermostat S-398-60. M2194202
INVENSYS Thermostat S-234-42. TT-3329
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Invensys Thermostat KA-1126-36.
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INVENSYS TEMPTERATURE CONTROLLER BJA25PB0336, 1210B BRAND !!!
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INVENSYS TB-155-015 TB155015