Schneider 140CRP93100
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(guān)。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(yīng)。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(nèi)存區(qū)的大小有關(guān)。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(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，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(guān)。規(guī)模大的PLC指令條數(shù)多，指令的功能也強，才能應(yīng)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(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的模塊組成當作所有PLC的結(jié)構(gòu)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(chǔ)，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
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SAGINAW 31" LENGTH 3" DIAMETER SHAFT BALL SCREW, NO LABEL, SEE PHOTOS
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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
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DEUTSCHE STAR RUNNER BLOCK / ROLLER RAIL 1853-613-10, SEALED
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STAR / REXROTH 1807-203-31 LINEAR ROLLER GUIDE RAIL, NNB
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THREAD CRAFT PRECISION BALL SCREW ?-16988
BELOIT CORP. SCREW JACK 274822D026
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THREAD CRAFT INC T-2569 COMMERCIAL BACKLASH BALL SCREW 38 OAL 30 TRAV NIB
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44'' LINEAR GUIDE RAIL
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THOMPSON SUPER 24 BALL BEARING LINEAR BUSHING NIB
20TH CENTURY MACHINE 104" O.A.L. PRECISION BALL SCREW FS127920-1600
DAYTRonIC LINEAR SENSOR DS6000A
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CAIPO DIS 10292 35 X 30 SCREW ACTUATOR
BELOIT CORP. SCREW JACK 274817D023-0-00?5
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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
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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
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REX 5FT MAT TOP CHAIN LF5936-12 *NEW*
