SCP451-51 S1
SCP451-51 S1
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PLC有多少條指令,各條指令又具有什么功能,是了解與使用PLC的重要方面。你不懂PLC指令怎么編程,沒有程序,PLC又怎么工作?
PLC的指令越來越多,越來越豐富。功能很強的指令,綜合多種作用的指令日見增多。
PLC的指令繁多,但主要的有這么幾種類型:
基本邏輯指令,用于處理邏輯關(guān)系,以實現(xiàn)邏輯控制。這類指令不管什么樣的PLC都總是有的。
數(shù)據(jù)處理指令,用于處理數(shù)據(jù),如譯碼,編碼,傳送、移位等等。
數(shù)據(jù)運算指令,用于進數(shù)據(jù)的運算,如十、一、X、/等,可進行整形數(shù)計算,有的還可浮點數(shù)運算;也可進行邏輯量運算,等等。
流程控制指令,用以控制程序運行流程。PLC的用戶程序一般是從零地址的指令開始執(zhí)行,按順序推進。但遇到流程控制指令也可作相應(yīng)改變。流程控制指令也較多,運用得好,可使程序簡練,并便于調(diào)試與閱讀。
狀態(tài)監(jiān)控指令,用以監(jiān)視及記錄PLC及其控制系統(tǒng)的工作狀態(tài),對提高PLC控制系統(tǒng)的工作可靠性大有幫助。
當(dāng)然,并不是所有的PLC都有上述那么多類的指令,也不是有的PLC僅有上述幾類指令。以上只是指出幾個例子,說明要從哪幾個方面了解PLC指令,從中也可大致看出指令的多少及功能將怎樣影響PLC的性能。
除了指令,為進行通訊,PLC還有相應(yīng)的協(xié)議與通訊指令或命令,這些也反映了PLC的性能。
DIXON BOSS PNEUMATIC REGULATOR AIR COMPRESSOR R30-06R NNB
FESTO 80MM BORE 80MM STROKE PNEUMATIC CYLINDER, DNC-80-80-PPV-A?, NNB
PARKER SERIES VE HYDRAULIC CYLINDER 06.00 TBVELUS14A 12.750
YUKEN HYDRAULIC CYLINDER CJT70-CB40B175B?-ABB
YUKEN HYDRAULIC CYLINDER CJT70-FA32B274B?-ABD
YUKEN HYDRAULIC CYLINDER CJT70-FA80B30B-?ABD
TOYOOKI HYDRAULIC CYLINDER TFA-SA IFA40B70B30DBA
YUKEN HYDRAULIC CYLINDER CJT70-FA80C145B?-ABD
YUKEN HYDRAULIC CYLINDER CJT70-FA40B30B-?AB
YUKEN HYDRAULIC CYLINDER CJT70-FA32D25D-?ABD-EK
YUKEN HYDRAULIC CYLINDER CJT70-FA32B110B?-ACC-EK
YUKEN HYDRAULIC CYLINDERCJT70-L?A40B90B-BDA-E
YUKEN HYDRAULIC CYLINDER CJT70-FA32B70B-?ABB-EK
YUKEN HYDRAULIC CYLINDER CJT70-FA40B450B?-ABD-EK
PARKER HANNIFIN CB152HL001 CYLINDER BODY SEAL KIT NIB
FESTO 40MM BORE 150MM STROKE PNEUMATIC CYLINDER, ADVU-40-150-PA, NNB
YUKEN HYDRAULIC CYLINDER CJT70-FA32B210B?-BAD 20
YUKEN HYDRAULIC CYLINDER CJT70-BA40B145B?-ABD
YUKEN HYDRAULIC CYLINDER CJT70-LB40B85B-?BAD-EK
SMC HYDRAULIC CYLINDER T-CHDMC25-75-K5?9W
YUKEN HYDRAULIC CYLINDER CJT70-FA63C280N?-BNC
SMC HYDRAULIC CYLINDER CHDQB40-30DM-J7?9WL ZS
YUKEN HYDRAULIC CYLINDER CJT70-FA80B40N-?AN
YUKEN HYDRAULIC CYLINDER CJT70-FA80C 28N-BNB
TOYODA MACHINE HYDRAULIC CYLINDER HC-40CB215-W-L
YUKEN HYDRAULIC CYLINDER CJT70-LA32B90B-?ABA-E
YUKEN HYDRAULIC CYLINDER CJT70-LA 50B 65B-ABD
FESTO VMPA-CPI-EPL-GU INTERNAL PILOT AIR SILENCER W/ FIELD BUS INTERFACE
ROSS 2771B4005 110/120 VOLTS 50/60 HERTZ PNEUMATIC VALVE
FESTO PNEUMATIC CYLINDER DNGU-80-430-PPV?-A
FESTO 145PSI PNEUMATIC CYLINDER DNC-32-300-PPV-?A-KP NNB
YUKEN HYDRAULIC CYLINDER CJT70-FA40B80B-?CAA-EK 20A
YUKEN HYDRAULIC CYLINDER CJT70-TC40B370B?-ADD-EK 20A
YUKEN HYDRAULIC CYLINDER CJT70-TC40B415B?-ADD-EK 20A
YUKEN HYDRAULIC CYLINDER CJT70-FA32B350B?-ABD-EK 20A
YUKEN HYDRAULIC CYLINDER CJT70-FA40B100N?-AND-EK
FESTO 40MM BORE 450MM STROKE PNEUMATIC CYLINDER, DNC-40-450-PPV-?A, NNB
YUKEN HYDRAULIC CYLINDER CJT70-FA32B375B?-BCD-EK 20A
YUKEN 20 HYDRAULIC CYLINDER PAZ-0228 / CJT70-FA32B700B?-ABD
MAC 0-150 PSI PRESSURE REGULATOR VALVE, PR63D-11BA *NIB*
FESTO PNEUMATIC CYLINDER DKE-63-340-PPV-?A
FESTO 32MM BORE 240MM STROKE PNEUMATIC CYLINDER, DNU-32-240-PPV-?A, NNB
YUKEN HYDRAULIC CYLINDER CJT70-FA32B50B-?ABD-EK 20A
YUKEN HYDRAULIC CYLINDER CJT70-FA63B65B-?ABC 20A
YUKEN HYDRAULIC CYLINDER CJT70-FA32B220B?-DAA-EK 20A
PARKER SER.HD 3000PSI HYDRAULIC CYLINDER 01.50 CJHDLTV142AC 2.000
STANLEY AIR TOOLS PNEUMATIC NUTRUNNER NO LABEL
SMC PNEUMATIC CYLINDER 63MM BORE 125MM STROKE CDQ2463-125DCM-?A93L
YUKEN HYDRAULIC CYLINDER CJT70-FA50B80B-?CBA-EN
BARCO ROTARY UNION BC-54924-06-06 NIB
NUMATICS 120V, 50/60HZ, 0.36A SOLENOID VALVE WITH MANIFOLD 33DSA4410
FESTO CYLINDER ADVU-63-25-P-A
ARO FLUID POWER E712LS
SMC CYLINDER CLATN80-500-E
FESTO 174PSI, 25MM STROKE,ROUND CYLINDER DGS-25-25
PALL FILTER ELEMENT NNB HC8400FKN16H / TV20B 104870
FESTO PNEUMATIC CYLINDER DNG-40-100-PPV-?A NNB
FESTO PNEUMATIC CYLINDER DNG-50-40-PPV-A NNB
NUMATICS VOLTS/HZ: 120/50/60 AMPS .11 SOLENOID VALVE I23SS500K / 123SS500K
FESTO PNEUMATIC CYLINDER DNG-50-50-PPV-A
NUMATICS 0-15 PSI PRECISION REGULATOR R880-02BG
PARKER 150PSI PNEUMATIC LUBRICATOR 06L11BE