ABB SC520

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根據(jù)硬件結(jié)構(gòu)的不同，可以將PLC分為整體式、模塊式和混合式。
1.整體式PLC
整體式又叫做單元式或機(jī)箱式，它的體積小、價格低，對箱體式PLC，有一塊CPU板、I/O板、顯示面板、內(nèi)存塊、電源等，當(dāng)然按CPU性能分成若干型號，并按I/O點數(shù)又有若干規(guī)格。對模塊式PLC，有CPU模塊、I/O模塊、內(nèi)存、電源模塊、底板或機(jī)架。無任哪種結(jié)構(gòu)類型的PLC，都屬于總線式開放型結(jié)構(gòu)，其I/O能力可按用戶需要進(jìn)行擴(kuò)展與組合。
2.模塊式PLC
大、中型PLC一般采用模塊式結(jié)構(gòu)，它由機(jī)架和模塊組成，模塊插在模塊插座上，后者焊接在機(jī)架中的總線連接板上，有不同槽數(shù)的機(jī)架供用戶選用，如果一個機(jī)架容納不下選用的模塊，可以增設(shè)一個或數(shù)個擴(kuò)展機(jī)架，各機(jī)架之間用接口模塊和電纜相連。
用戶可以選用不同檔次的CPU模塊、品種繁多的I/O模塊和特殊功能塊，對硬件配置的選擇余地較大，維修時更換模塊也很方便。

GREENFIELD GTD 3/4-16 NF HS G H4 4 1/4"LENGTH
 
INGERSOLL RAND 1/2IN DRIVE RIGHT ANGLE ELECTRONIC NUTRUNNER DEA120NTE9S8L
 
MORSE 1/2" HS #2 TWIST DRILL
 
NORTON 4-3/4x1/8x1-1/4 DIAMOND WHEEL ASD120 RS0B76-1/8

STAINLESS STEEL ROUND WIRE TUBE CLEANING BRUSH LOT OF 3
 
ALLEN BRADLEY * OPTIC PILOT LIGHT LOT OF 2 NIB * 800EP-PL7
 
TIF TIC TRACER WITH CARRYING CASE MISSING BATTERY COVER TIF 300HV
 
WINTER TAP 11/18 - 11 NS H S R24
 
F.W. BELL CLAMP-ON PROBE CG-100A *NEW*
 
STANLEY 3/8" DRIVE RIGHT ANGLE ELECTRONIC NUTRUNNER E40LRAXG-10
 
BINKS 1-1/4IN. NPT AIR GUN NOZZLE 662F *NIB*

UB 7/8-14 NF DIE 13481
 
MSA ZERO HOOD WELDER'S HOOD 983174 NIB
 
UNITED DRILL JIG BUSHING 3/4 I.D. X 1 O.D. L64-12
 
REXROTH 4IN. X 4IN. OAL LINEAR MOTION GUIDE 1651-794-10 *NEW IN BOX*
 
LION HS 5/8 - 40 NF GH-3
 
1 1/4 X 1/4 X 1/2 SIDE MILL OTW HS 21
 
HSS TAP 5/8-11 4 THREADS +.005
 
STANLEY 3/8" PNEUMATIC NUTRUNNER, A40LATAM-6F2
 
CTP 1/2IN. NPT SHEFCUT PRECISION REAMER CSS-2246 *NEW*
 
NATIONAL 5/16-24 NF HS HAND TAP LOT OF 2 GH3 233S09 101091
 
MARTIN SPROCKET 50BS121 *NEW IN BOX*
 
PRECISION TWIST DRILL CO 7/16" TAPER SHANK 20028, 209 *NEW*
 
DURBAL 1/4" ROD END PF20L
 
7/16-14X2 1/2" PLATED 5/8 HEX HEAD BOLT LOT OF 100
 
MORSE 5/8" ROLLER CHAIN 50-3R NIB


KENNAMETAL ERICKSON 15/32" COLLET 12012CL4 *NEW*
 
REPUBLIC 2-FLUTE 29/32 10-1/16" HS TWIST DRILL SHANK
 
ARMSTRONG WR ADJ SPNR PIN 1 1/4-3 34-357
 
SPROCKET 35.21 X 3/4 LOT OF 2
 
INGERSOLL-DRESS?ER COLLAR NIB 2RV342AX1-REDFB?R
 
GREENFIELD * SKT IMP 3/4 DR 22MM NIB * 1ACH8
 
COOPER CLEVIS 473 3/8" 5400LBS. GRAB HOOK 450-0604 NIB
 
SEW EURODRIVE DFT810N4 GEAR 1 HP MOTOR
 
DANFOSS 5/8"ODF SGN 16s 500PSIG SIGHT GLASS 014-0145 NIB
 
BASCO COOLER COVER 32DO2E6/55095
 
TWC 2-FLUTE 1-11/32 14" HS TWIST DRILL SHANK
 
CANON BLACK TONER PC CARTRIDGE F41-2302-120 / 5K20U1 NIB
 
DOUBLE SIDED END MILL 1" 4 FLUTED 6 1/4"
 
ATLAS CYLINDERS SEAL REPAIR KIT DJ13R120S NIB
 
NYTD 1/2" FISHTAIL TWIST DRILL 6 IN BAG, NIB, 11288AA
 
ROTEX COUPLING 1/2 W SPIDER , NNB
 
CHAMPION 600-7/8" END MILL 4.700"
 
PIPE TAP HS 8 FLUTE 9 1/2 " LENGTH
 
9/16" 12NC 4-FLUTE HS HAND TAP GH3
 
STANLEY 3/8IN DRIVE RIGHT ANGLE ELECTRONIC NUTRUNNER E30LSRA2AXG-22
 
1" SHANK 5 PC SET P082945/1 NIB
 
CARR LANE BALL LOCK PIN CL-16-BLPT-4.00 *NEW*
 
FLUOROSEAL 2-3 37-700-0-018 105188
 
WALDRON FLEXALIGN KOP-FLEX SLEEVE COUPLING SIZE-4.5 NIB
 
3DX1-1/4" CASTER WHEEL 1ZNK1 NIB
 
APT 3/16" REAMER 101-0-0.1875 *NEW*
 
BROWNING 2-GROOVE SHEAVE PULLEY 2BK30X3/4
 
1/4'' HEX DRIVE PNEUMATIC NUTRUNNER, 12407?, MISSING TAG
 
LEN AND JERRY 1-1/4" CLAMP 832010 LOT OF 4
 
COARSE STAINLESS 69 IN BOX HEX CAP SCREWS 5/16-18 X 3/4
 
NYTD 9.5 BODY DRILL 4 IN BAG NIB 1040374 / 20-95333
 
AGFM 76.13792 O-RING NIB 09655 / 26.64-2.62 / S-E-2-040
 
B-LINE B3100-1 1/2 PIPE CLEVIS HANGER LOT OF 4
 
R+N HSGH-7 1/2-20NF 88260 SK 1307 3 FLUTE
 
UB JM CARPENTER TAP AND DIE CO. 1-1/8" TAP
 
NIAGARA 3/4 HSS ALUMINUM CUTTING SHANK NIB 90244 / LD-3.022 E2
 
V WHEELER 1/2 - 14 NPSF HS-G
 
NYTD INDUSTRIES INC. 3/16" DRILL BITS NIB 9 IN BAG 10854AA
 
AF82 1/2" COLLET U 1010
 
FESTO PUSH-IN FITTING QS-1/2-16
 
HELI-COIL 4-FLUTE HSS GH4 HAND TAP 1-8 STI-NC / 8187-16
 
CLEVIS HANGER 110 1 1/4''
 
ATRIX INTERNATIONAL 120V 1PH 6.6A OMEGA VAC VACUUM IN CASE
 
GREENFIELD TAP GTD 1/2-20 NF HS A0406 3 FLUTE
 
7/16X3/8" SINGLE END HSS TWO FLUTE ENDMILL
 
LENOX NEO-TYPE WELDED BAND 16 X 1/2 .025 4 HR 82753NEB164875
 
SIER-BATH COUPLING SLEEVE C 1 1/2 NIB