Schneider 140CRA93100
1.控制規(guī)模
控制規(guī)模代表PLC控制能力，看其能對多少輸入、輸出點及對多少路模擬進行控制。
控制規(guī)模與速度有關。因為規(guī)模大了，用戶程序也長，執(zhí)行指令的速度不快，勢必延長PLC循環(huán)的時間，也必然會延長PLC對輸入信號的響應。為了避免這個情況，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)模還與內存區(qū)的大小有關。規(guī)模大，用戶程序長，要求有更大的用戶存儲區(qū)。同時點數(shù)多，系統(tǒng)的存儲器輸入、輸出的信號區(qū)（輸入輸出繼電器區(qū)或稱輸入、輸出映射區(qū)）也大。這個區(qū)大，相應地內部器件（解釋見后）也要增多，這些都要求有更大的系統(tǒng)存儲區(qū)。
控制規(guī)模還與輸入、輸出電路數(shù)有關。如控制規(guī)模為1024點，那就得有1024條I/O電路。這些電路集成于I/O模塊中，而每個模塊有多少路的I/O點總是有數(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。規(guī)模大的PLC指令條數(shù)多，指令的功能也強，才能應付對點數(shù)多的系統(tǒng)進行控制的需要。
控制規(guī)模是對PLC其它性能指標起著制約作用的指標；也是PLC劃分為微、小、中、大和特大型
2.組成模塊
PLC的結構雖有箱體及模塊式之分，但從質上看，箱體也是模塊，只是它集成了更多的功能。在此，不妨把PLC的模塊組成當作所有PLC的結構性能。
這個性能含義是指某型號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。
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，反映它的特點的性能指標也高。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，只有弄清所選用的PLC都具有那些模塊及其特點，才能正確選用模塊，去組成一臺完整的PLC，以滿足控制系統(tǒng)對PLC的要求。
廈門莫格電氣自動化有限公司
：張 美 霞
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FARRAND 51 & 1/2" O.A.L. TAPE SPAR LINEAR SCALE 218052-15-1038
TOL-O-MATIC B3W LINEAR BELT DRIVE ACTUATOR WITH MOTOR, NNB
NSK 80" O.A.L. LINEAR BALL SCREW W5016-1987-C5Z 05L5-0005
INA LINEAR BEARING PR 14032 GR3, NIB
54" O.A.L. PRECISION BALL SCREW M-127
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THK CAM FOLLOWER CFH12MA / 350910 A NIB
THREAD CRAFT INC T-4073 COMMERCIAL BACKLASH BALL SCREW 50 OAL 2? DIA NIB
THOMSON ISO 9000 SUPER PILLOW BLOCK BEARING NIB SPB160PN
SAGINAW 31" LENGTH 3" DIAMETER SHAFT BALL SCREW, NO LABEL, SEE PHOTOS
LEAD SCREWS INTERNATIonAL 40" O.A.L. PRECISION BALL SCREW M447
THK 92" O.A.L. LINEAR MOTION SYSTEM YS 7F27
THREAD CRAFT INC T-6235 COMMERCIAL BACKLASH BALL SCREW 58 OAL 51 TRAV 2? DIA NIB
STAR 83.5" 28-HOLE LINEAR GUIDE RAIL 48-10-1608, RUST
94" O.A.L. PRECISION BALL SCREW C-246
DEUTSCHE STAR RUNNER BLOCK / ROLLER RAIL 1853-613-10, SEALED
20TH CENTURY MACHINE 120" O.A.L. PRECISION BALL SCREW FS-127920-2000
THOMSON A162536 LINEAR BALL BEARING, NNB
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GEORG FISCHER DOUBLE ACTING ACTUATOR
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PARKER PNEUMATIC ACUATOR VAVLE P5T-J063DHSN050 SEALED
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INA LINEAR MOTION BEARING KH1026/P/PP
EMCOR 36" O.A.L. PRECISION BALL SCREW E-6428
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EMCOR E-6696 58" PRECISION BALL SCREW
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NB LINEAR BEARING TWA-16UU
26" O.A.L. PRECISION BALL SCREW 052243
THOMSON ACCUGLIDE RG25NL0260 348660-81 LINEAR RAIL, NNB
FESTO DGP LINEAR DRIVE DGP-40-1300PPVA?B-SL010179
THREAD CRAFT INC T-8310 COMMERCIAL BACKLASH BALL SCREW 50 OAL 44 TRAV NIB
STAR / REXROTH 1807-203-31 236MM LINEAR ROLLER GUIDE RAIL, NNB
STAR / REXROTH 1807-203-31 LINEAR ROLLER GUIDE RAIL, NNB
THREAD CRAFT 39.55" 1.5 DIAMETER PRECISION BALL SCREW T-4947
36.562" O.A.L. PRECISION BALL SCREW 80198 / C-160
THOMSON SAGINAW 17.5" PRECISION BALL SCREW A-5409
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BARNES INDUSTRIAL BWO35342 120694 25?" BALLSCREW, NIB
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THREAD CRAFT PRECISION BALL SCREW ?-16988
BELOIT CORP. SCREW JACK 274822D026
42" O.A.L. PRECISION BALL SCREW C-270
48" O.A.L. PRECISION BALL SCREW A-60292
STAR / REXROTH 1807-203-31 356MM LINEAR ROLLER GUIDE RAIL, NIB
THREAD CRAFT INC T-2569 COMMERCIAL BACKLASH BALL SCREW 38 OAL 30 TRAV NIB
THK LINEAR GUIDE RAIL NIB SHS-800L(GK) / UCG02891 101077
44'' LINEAR GUIDE RAIL
THOMSON INDUSTRIES, INC SUPERSLIDE SYSTEMS POSITIonING SLIDE, 37" OAL; 32" TRAV
REXROTH STAR RUNNER BLOCK/ BALL RAIL 1623-214-20 NIB
THOMPSON SUPER 24 BALL BEARING LINEAR BUSHING NIB
20TH CENTURY MACHINE 104" O.A.L. PRECISION BALL SCREW FS127920-1600
DAYTRonIC LINEAR SENSOR DS6000A
THREAD CRAFT INC T-4013 COMMERCIAL BACKLASH BALL SCREW 38 OAL 29 TRAV NIB
THREAD CRAFT INC T-5736 COMMERCIAL BACKLASH BALL SCREW 48? OAL 45? TRAV NIB
CAIPO DIS 10292 35 X 30 SCREW ACTUATOR
BELOIT CORP. SCREW JACK 274817D023-0-00?5
THREAD CRAFT T7425 74" O.A.L. PRECISION BALL SCREW CP#2.25X500x74
THREAD CRAFT INC T-1526 COMMERCIAL BACKLASH BALL SCREW 49 OAL 42 TRAV NIB
THREAD CRAFT INC T-6235 COMMERCIAL BACKLASH BALL SCREW 49 OAL 42 TRAV NIB
1244.5MM O.A.L. PRECISION BALL SCREW C-264
IKO 13-HOLE LINEAR GUIDE RAILWAY LWH 55 101018
IAI SINGLE AXIS ROBOT LINEAR ACTUATOR ISA-SXM-0-0-100?0-AQ
EMCOR 47.812" O.A.L. PRECISION BALL SCREW E-6630
FESTO 63MM BORE 500MM STROKE LINEAR DRIVE DGP-63-500-PPVA?-B
HEIDENHAIN 620MM, LINEAR SCALE LS 704
TEMPOSonIC R SERIES LINEAR-POSITION SENSOR RHT0065UD601V01
INGERSOLL-RAND ARO 1/4 TON SERIES 7700 ROLLER CHAIN HOIST 7718E-2C10-C6S
INGERSOLL-RAND ARO 1/4 TON SERIES 7700 ROLLER CHAIN HOIST 7718E-2C10-K6
IDEAL .69-1.25D, SAE SIZE 12, CLAMP 62M12, BOX OF 10 *NEW*
AEROQUIP HOSE CUT OFF MACHINE S1104-2-1
TSUBAKI 3/4" PITCH 10FT RIVETED ROLLER CHAIN, NO. 60 *NEW*
CAMPBELL 1/4" (6MM) WIRE ROPE CLIPS, B7670439 *NEW LOT OF 5*
GALVANIZED WIRE ROPE CABLE, 3/8" 7 X 19, PARTIAL ROLL
CREFORM 200 X 42 SWIVEL CASTER W/ STOP & POLYURETHANE WHEEL, J-200S, LOT OF 2
BUDGIT 1/4 TON ELECTRIC CHAIN HOIST 11689769 / G606-6R
BLACK ConVEYOR BELT, 57-1/2" WIDTH, 1/4" THICK, APPROX. 120' LONG
CM BIG ORANGE 1/8" WIRE ROPE CLIPS 2G804, LOT OF 4 *NEW*
REX 5FT MAT TOP CHAIN LF5936-12 *NEW*
