AAI143-H03 S1
AAI143-H03 S1
主營(yíng)產(chǎn)品：AB，ABB，GE，本特利，福克斯波羅，英維斯，西屋，艾默生，橫河
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CPU從*條指令開(kāi)始執(zhí)行程序，直至遇到結(jié)束符后又返回*條。如此周而復(fù)始不斷循環(huán)。這種工作方式是在系統(tǒng)軟件控制下，順次掃描各輸入點(diǎn)的狀態(tài)，按用戶程序進(jìn)行運(yùn)算處理，然后順序向輸出點(diǎn)發(fā)出相應(yīng)的控制信號(hào)。整個(gè)工作過(guò)程可分為五個(gè)階段：自診斷，與編程器等的通信，輸入采樣，用戶程序執(zhí)行，輸出刷新，其工作過(guò)程框圖如圖所示：
PLC工作過(guò)程框圖
1）每次掃描用戶程序之前，都先執(zhí)行故障自診斷程序。自診斷內(nèi)容為I/O部分、存儲(chǔ)器、CPU等，發(fā)現(xiàn)異常停機(jī)顯示出錯(cuò)。若自診斷正常，繼續(xù)向下掃描。
2）PLC檢查是否有與編程器和計(jì)算機(jī)的通信請(qǐng)求，若有則進(jìn)行相應(yīng)處理，如接收由編程器送來(lái)的程序、命令和各種數(shù)據(jù)，并把要顯示的狀態(tài)、數(shù)據(jù)、出錯(cuò)信息等發(fā)送給編程器進(jìn)行顯示。如果有與計(jì)算機(jī)等的通信請(qǐng)求，也在這段時(shí)間完成數(shù)據(jù)的接受和發(fā)送任務(wù)。
3）PLC的*處理器對(duì)各個(gè)輸入端進(jìn)行掃描，將輸人端的狀態(tài)送到輸入狀態(tài)寄存器中，這就是輸入采樣階段。
4）*處理器CPU將指令逐條調(diào)出并執(zhí)行，以對(duì)輸人和原輸出狀態(tài)（這些狀態(tài)統(tǒng)稱為數(shù)據(jù)）進(jìn)行“處理”，即按程序?qū)?shù)據(jù)進(jìn)行邏輯、算術(shù)運(yùn)算，再將正確的結(jié)果送到輸出狀態(tài)寄存器中，這就是程序執(zhí)行階段。
5）當(dāng)所有的指令執(zhí)行完畢時(shí)，集中把輸出狀態(tài)寄存器的狀態(tài)通過(guò)輸出部件轉(zhuǎn)換成被控設(shè)備所能接受的電壓或電流信號(hào)，以驅(qū)動(dòng)被控設(shè)備，這就是輸出刷新階段。
PLC經(jīng)過(guò)這五個(gè)階段的工作過(guò)程，稱為一個(gè)掃描周期。完成一個(gè)周期后，又重新執(zhí)行上述過(guò)程，掃描周而復(fù)始地進(jìn)行。掃描周期是PLC的重要指標(biāo)之一，在不考慮第二個(gè)因素（與編程器等通信）時(shí)，掃描周期T為：
T＝（讀入一點(diǎn)時(shí)間×輸入點(diǎn)數(shù)）+（運(yùn)算速度×程序步數(shù)）＋（輸出一點(diǎn)時(shí)間×輸出點(diǎn)數(shù)）十故障診斷時(shí)間
SMC 150PSI PNEUMATIC CYLINDER T-ACNL-80-01-00?10US
NUMATICS SOLENOID VALVE I34RD100J053G
PARKER 63mm BORE 120.7mm PNEUMATIC CYLINDER 63 CTMPRVS14MC 120.7
SMC 145PSI PNEUMATIC CYLINDER T-ACNL-80-01-00
NUMATICS 120V, 0.30AMPS, SOLENOID VALVE 554SS43CJ
MAC 150PSI 2.5WATTS SOLENOID VALVE PME591AAAA
TOYODA MACHINE HYDRAULIC CYLINDER HC-40CB215-W-L
SMC PNEUMATIC CYLINDER 63MM BORE 150MM STROKE CKGA163-150Y
NUMATICS DOUBLE ENDED PNEUMATIC REGULATOR NIB 123RQ100JP00000
NUMATICS 150 PSIG SOLENOID VALVE 134BA400KP14D30
NUMATICS SOLENOID REGULATOR VALVE W/ BASE, I35RD115J000000
WELKER BEARING COMPANY 250PSIG 63MMBORE 50MMSTROKE PNEUMATIC CYLINDER WCP-027
NUMATICS 150PSIG-AIR SOLENOID VALVE I34BB515MP00061
PARKER 14N73-32-32 SAE CODE 61 FLANGE HEAD 90 ELBOW
NUMATICS 120V, 50-60HZ, 0.16AMPS SOLENIOD VALVE 34DXP4460
NUMATICS SERIES ISO5599/11 SOLENOID VALVE I23BB400MP
FESTO 145PSI PNEUMATIC CYLINDER DRQD-25-90-PPV-?J-A-AL-ZW
SMC CYLINDER CDNAF50N-150H-D?-J59W W/CNA50ND-UA
LUBRIQUIP DIVIDER VALVE MSP-151 H006
UNKNOWN MANUFACTURER * SCH 40 PIPE NIPPLE * 304/40
FESTO 32mm BORE 125mm STROKE PNEUMATIC CYLINDER DNG-32-125-PPV-?A
NORGREN 400PSIG INLET 50PSIG OUTLET REGULATOR 11-002-021 103723
FESTO 20MM BORE 25MM STROKE PNEUMATIC CYLINDER, DSNU-20-25-PPV-?A, NNB
FESTO CONNECTOR CABLE, 159424 PNP, NNB
NUMATICS 150 PSIG-AIR PNEUMATIC SOLENOID VALVE, I34BB400KP
HYSON 160 MM STROKE, 130 BAR NITROGEN GAS SPRING NP-750-160 SW
FIBRO GSA 73169 02310 PNEUMATIC ROBOTIC GRIPPER 52.81.500
ST * METRIC 90 ELBOW * UNKNOWN
BIMBA DOUBLE WALL ROD END PNEUMATIC CYLINDER CDW-01828-A-18
RACINE VARIABLE VOLUME SILENT VANE PUMP PSV DNS0 20HRS 11
SMC 145 PSI 1.00 MPA PNEUMATIC CYLINDER, US23700
NUMATICS VALVE 225-285B 24VDC 6.3 WATTS
NUMATICS 120V 0.30A 60HZ 150 PSIG-AIR PNEUMATIC SOLENOID VALVE, I34SS500K
IAI LARGE DIAMETER HOLLOW ROTARY GRIPPER ASSEMBLY
NORGREN GRIP-LOK GRIPPER AW 789 PO
FESTO LINEAR GUIDE FEN-63-200 NNB
UNKNOWN MANUFACTURER * ASSORTED WEATHERHEAD 90 ELBOW * UNKNOWN
NUMATICS REGULATOR VALVE 554RD100J000000
FHAC GX11 HYDRAULIC MOTOR/PUMP 9G D23 01
PALL MODEL 8670 DUPLEX FILTER ASSEMBLY HH8670D20 UB T 104656
NUMATICS 150PSIG, 120V, .16A, 50/60Hz SOLENOID VALVE 554BB500K
ADVANCE * CYLINDER REPAIR KIT NIB * I325-00NL
NORGREN 250PSI PNEUMATIC LUBRICATOR L17-800-OEDA
MAGNETROL PD43L38Y 60W 120V SOLENOID VALVE
HYTORK 1125 ACTUATOR W/ ACCUTRAK POSITIONER 1040N 103548
PARKER 1000KPA SOLENOID VALVE F72VXBG019A
MILLER HEAVY DUTY AIR CYLINDER AV-72BXN -08.00-40.00-01?38-N11-0
MAC 24VDC 6.0W 150PSI SOLENOID VALVE 130B-501BA
NUMATICS 150PSIG .31A 115V PNEUMATIC SOLENOID VALVE 33SAD441A 103353
SMC PNEUMATIC MICRO MIST SEPERATOR REGULATOR AWD20-01B
FESTO 50MM BORE 200MM STROKE PNEUMATIC CYLINDER, DNU-50-200-PPV-?A
LUBRIQUIP TRABON .150 TWIN OUTLET DIVIDER VALVE, MXP-150T
NUMATICS 24 VDC, 4.0 WATTS SOLENOID COIL, 236-312B
BEHRINGER CORPORATION BE60P40AH HYDRAULIC FILTER, NIB
FESTO 40MM BORE 170MM STROKE PNEUMATIC CYLINDER, ADVU-40-170-PA, NNB
PARKER 10671-32-32 FEMALE JIC 37 SWIVEL
BIMBA PNEUMATIC CYLINDER 042-DZ YG
VERSA 120V 75PSI SOLENOID VALVE ESM 8012 66 Z CLL36
FESTO DGPL-63-500-PPV?-A-GF-B
NUMATICS 123BA400K 120 VOLTS 50/60 HERTZ 150 PSIG SINGLE SOLENOID VALVE, NNB
ENERPAC AIR HYDRAULIC BOOSTER AHB46
NUMATICS 150 PSIG-MAX SOLENOID VALVE ISO5599/11
SMC NCDBN32-XA-0065?US AIR CYLINDER, NNB
NUMATICS F30B-04CE PNEUMATIC VALVE, NIB
FESTO PNEUMATIC LINE GUIDE FEN-50-80-KF NNB
