Schneider 140CRA93200
1.控制規(guī)模
控制規(guī)模代表PLC控制能力，看其能對(duì)多少輸入、輸出點(diǎn)及對(duì)多少路模擬進(jìn)行控制。
控制規(guī)模與速度有關(guān)。因?yàn)橐?guī)模大了，用戶程序也長(zhǎng)，執(zhí)行指令的速度不快，勢(shì)必延長(zhǎng)PLC循環(huán)的時(shí)間，也必然會(huì)延長(zhǎng)PLC對(duì)輸入信號(hào)的響應(yīng)。為了避免這個(gè)情況，PLC的工作速度就要快。所以，大型PLC的工作速度總是比小的要快。
控制規(guī)模還與內(nèi)存區(qū)的大小有關(guān)。規(guī)模大，用戶程序長(zhǎng)，要求有更大的用戶存儲(chǔ)區(qū)。同時(shí)點(diǎn)數(shù)多，系統(tǒng)的存儲(chǔ)器輸入、輸出的信號(hào)區(qū)（輸入輸出繼電器區(qū)或稱輸入、輸出映射區(qū)）也大。這個(gè)區(qū)大，相應(yīng)地內(nèi)部器件（解釋見后）也要增多，這些都要求有更大的系統(tǒng)存儲(chǔ)區(qū)。
控制規(guī)模還與輸入、輸出電路數(shù)有關(guān)。如控制規(guī)模為1024點(diǎn)，那就得有1024條I/O電路。這些電路集成于I/O模塊中，而每個(gè)模塊有多少路的I/O點(diǎn)總是有數(shù)的。所以，規(guī)模大，所使用的模塊也多。
控制規(guī)模還與PLC指令系統(tǒng)有關(guān)。規(guī)模大的PLC指令條數(shù)多，指令的功能也強(qiáng)，才能應(yīng)付對(duì)點(diǎn)數(shù)多的系統(tǒng)進(jìn)行控制的需要。
控制規(guī)模是對(duì)PLC其它性能指標(biāo)起著制約作用的指標(biāo)；也是PLC劃分為微、小、中、大和特大型
2.組成模塊
PLC的結(jié)構(gòu)雖有箱體及模塊式之分，但從質(zhì)上看，箱體也是模塊，只是它集成了更多的功能。在此，不妨把PLC的模塊組成當(dāng)作所有PLC的結(jié)構(gòu)性能。
這個(gè)性能含義是指某型號(hào)PLC具有多少種模塊，各種模塊都有什么規(guī)格，并各具什么特點(diǎn)。
一般講，規(guī)模大的PLC，檔次高的PLC模塊的種類也多，規(guī)格也多，反映它的特點(diǎn)的性能指標(biāo)也高。但模塊的功能則單一些。相反，小型PLC、檔次低的PLC模塊種類也少，規(guī)格也少，指標(biāo)也低。但功能則多樣些，以至于集成為箱體。
組成PLC的模塊是PLC的硬件基礎(chǔ)，只有弄清所選用的PLC都具有那些模塊及其特點(diǎn)，才能正確選用模塊，去組成一臺(tái)完整的PLC，以滿足控制系統(tǒng)對(duì)PLC的要求。
廈門莫格電氣自動(dòng)化有限公司
：張 美 霞
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STANLEY VIDMAR 9-DRAWER STORAGE CABINET, 28" X 30" X 59", HANDLES, 5/7-C
UNION WIRE ROPE 460 Ft 7/16 INCH DIA 6X36 LAY R/L CORE/FINISH IWRC W/ PLUG ENDS
STANLEY VIDMAR 7-DRAWER STORAGE CABINET, 30" X 28" X 59", 3/30-B
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ADB 30,000lb NICKEL PLATED HOIST RING X83200-C-3.8-NI?CKEL *NEW*
CLIPPER 6 BELT FASTENERS GALVANIZED NYLOSTEEL PINS 12" NIB
DENGENSHA 12" VIBRATORY PARTS FEEDER AF.V-N-S-S10-DL?H
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PPI PRECISION PULLEY & IDLER CONVEYOR TROUGHING IDLER C5-20TESA-36GR
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ROLLER CHAIN 18MM PITCH, 5MM PIN DIAMETER, 12MM ROLLER WIDTH, 16' LENTH (x2)
WIRE CO. WRCA 1/2" WIRE ROPE, 500'
CM COLUMBUS MCKINNON CYCLONE HAND HOIST, 5 TON
LYON 7-DRAWER SAFETY LINK CABINET MSS II, 30" X 27.5" X 59", 3/27-A
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ELLIOTT COMPANY 12" PACKING RING 629466 105367
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INGERSOLL-RAND ARO INDUSTRIAL ROLLER CHAIN HOIST 1/4 TON W/ PENDANT
RUBBER CONVEYOR ROLLER, 38" LENGTH, 30" DIAMETER, R1H2
BUHLER .26MM BLOW-THROUGH AIRLOCK MPSH-36/38LP TK1
27"H, 32"W, 16"D 2 DOOR 2 SHELF LOCKABLE STORAGE CABINET
PPI PRECISION PULLEY & IDLER CONVEYOR TROUGHING IDLER C5-45TU-36SB
RSC SAPPHIRE ANSI STANDARD ROLLER CHAIN ASA 120-2 CP X 10 FEET
CHESTER ELM-5 ELECTRIC WORM DRIVE HOIST WITH TROLLEY 5 TON
CONVEYOR ROLLER, 38.5/39.5" LONG, NO LABEL
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INGERSOLL-RAND ARO 3/4 TON CHAIN HOIST 7714 DLT
UNIFIED IND INC TSE SERIES FOUR WHEEL TANDEM TROLLEY, 2500 lb CAP, NEW
JET EQUIPMENT AND TOOLS JPSG-618M MANUAL SURFACE GRINDER
C&H DISTRIBUTORS, INC. STEEL STORAGE CABINET, NO SHELVES, NO LABEL
80T WLL 2-1/2 SCREW PIN SHACKLE
KNAACK JOBMASTER 109 STORAGE CABINET, 60IN X 24IN X 89IN
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FMC 4600S 39.88 LG CONVEYOR ROLLER 1730-456-A
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CONVEYOR TROUGHING TRAINING IDLER, NO LABEL
INGERSOLL-RAND 105LBS LIFTING DEVICE ASSEMBLY *NEW*
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INGERSOLL-RAND ARO 7718E IND ROLLER CHAIN HOIST SERIES 7700 1/4 TON W/ PENDANT
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S-K IND. CO., LTD 14" MAGNETIC VIBRATOR FEEDER BOWL SK-C
TENNSMITH MANUAL SLIP ROLL MODEL SR48
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REXNORD RIVETED CONVEYOR CHAIN WDHR 110 W17 EV4 R, 20-LINKS
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HILMAN ROLLERS GRIP PLATE T-3.75-10
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BUHLER .20MM BLOW-THROUGH AIRLOCK MPSH-22/22LP TK1, CRACKED
BUHLER .18MM BLOW-THROUGH AIRLOCK MPSH-22/22LP TK1, CRACKED
BUHLER .16MM BLOW-THROUGH AIRLOCK MPSH-22/22LP TK1
BUHLER .20MM BLOW-THROUGH AIRLOCK MPSJ-22/22LP TK2
WHX 4885 RIV CHAIN, 12" PITCH, ROLLER 1.75" DIA. 3.25"W, PLATE 2.5"H, LISTING #2
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HERKULES LIFTS 6000LB HEAVY DUTY LIFT & ROTATE LOAD PLATE V-0157, NEW
CM COLUMBUS MCKINNON CYCLONE HAND HOIST EQUIPPED WITH LOAD LIMITER, 2 TON
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COLUMBUS-McKINN?ON CORP. 2000lbs. CM CADY LIFTER SKL02-3SP
ROLL 4600 X 39.?8 CONVEYOR RETURN TRAINING IDLER 1730-456-A
LYON 6-DRAWER SAFETYLINK STORAGE CABINET MSS II, MISSING DRAWER
ACCO WRIGHT 3 TON CHAIN HOIST
DETROIT HOIST * 2-TON CHAIN * NO LABEL
YAJIMA KOGYO 10" VIBRATORY BOWL PARTS FEEDER NFSIS-0008
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