A3NMCA2

A3NMCA2

A3NMCA2

A3NMCA2

一、摘要 PLC是一种专门在工业环境下应用而设计的数字运算操作的电子装置。

它采用可以编制程序的存储器，用来在其内部存储执行逻辑运算、顺序运算、计时、计数和算术运算等操作的指令，并能通过数字式或模拟式的输入和输出，控制各种类型的机械或生产过程。PLC及其有关的外围设备都应按照易于与工业控制系统形成一个整体，易于扩展其功能的原则而设计。在工业生产的各个领域，机械加工企业为了提高生产效率，采用机械化流水作业的方式，对不同类型的零件分别组成的自动生产线。随着产品机型的更新换代，生产线承担的加工对象也随之改变，这就需要改变控制程序，使生产线的机械设备按新的工艺过程运行，而继电接触器控制器系统是采用固定接线，很难适应这个要求。大型自动生产线的控制系统使用的继电器数量很多，随着PLC的应用日益普及,其使用方法简单,便于掌握,且可靠性,抗干扰性很强,自身具有完善的功能.模块化的结构,使其在工业生产线上的应用越来越广泛。

　　发展趋势：1.向高速度、大容量方向发展

　　为了提高PLC的处理能力，要求PLC具有的响应速度和更大的存储容量。目前，有的PLC的扫描速度可达0.1ms/k步左右。PLC的扫描速度已成为很重要的一个性能指标。

　　在存储容量方面，有的PLC可达几十兆字节。为了扩大存储容量，有的公司已使用了磁泡存储器或硬盘。

　　2.向超大型、超小型两个方向发展

　　当前中小型PLC比较多，为了适应市场的多种需要，今后PLC要向多品种方向发展，特别是向超大型和超小型两个方向发展。现已有I/O点数达14336点的超大型PLC，其使用32位微处理器，多CPU并行工作和大容量存储器，功能强。

Marathon R30A1SP 3 1 Pole Fuse Holder 20 Amp R30A1

Marathon R6J30A3SP 3 Pole Fuse Holder 600 V 30 Amp R6J30A3SP 1 (TSC)

Marathon R6J60A3B 3 Pole 60 Amp 600 V Fuse Holder

Markem Imaje 1563551 Control Box Mount Assembly

Markem Imaje 5200 5400 Printhead 5200/5400 Model 5200 & 5400 Print Head

Markem Imaje Smartdate 3IW Smart Date 115/230 VAC Controller

Markem Imaje Smartdate S3IW PR Smart Date Printer 3IW S3IWPR

Markem Imaje UI 100 SL020110 Interface Panel UI100

Marley UHMT1 Internal 1 Pole Thermostat

Marquardt 1252.0120 Trigger Switch Rocker 12520120

Mars 780 61447 Definite Purpose Contactor 40 FLA 208-240 V Coil

Marsh Company 21975 Rev D Circuit Board Print Head Controller Card

Marshall Town 90266 0-35 Inches of Water Kilopascals Gauge 1/2" Nipple

Martin 100B15 Bore Sprocket  (TSC)

Martin 100BTB15 2517 Sprocket 100BTB152517  (TSC)

Martin 40BS15 3/4 Sprocket  (TSC)

Martin 40BS18 1 3/8 Sprocket  (TSC)

Martin 40BS18 HT 1 7/16 Sprocket  (TSC)

Martin 50BS18 1 1/4 Sprocket  (TSC)

Martin 60BTB13 1210 Sprocket  (TSC)

Martin 60BTB17 1610 Sprocket  (TSC)

Martin 80BS16 1 3/8 Sprocket  (TSC)

Martin S614 14-1/2 Sprocket  (TSC)

Martin SK 1 1/4 QD Bushing (TSC)

Martin Sprocket 40BTB181210 Taper Bushed  (TB)

Martin Sprocket P488M20SDS P488M20 SDS

Martin TS636 Sprocket  (TSC)

MATSUSHITA ELECTRIC SUNX LTD PS-930 Controller Relay Projector Detector PS930

Matsushita Electric TH631M1 Hour Meter 100 VAC

Maxon Re-Max 266314 Combination Gear Motor

Mayr EAS-com K6128803 2/490.725.1 7005344 200 Nm Coupling

Mayr Roba-RN 5/140.300 5 Nm Roba-roll-Kupplung 5140300 5/140 K7111746 8179811

McDonnell FS1 Flow Control Switch

McGill CF-1 1/4 Cam Follower CF-11/4 CF1  (TB)

McGill CF-7/8 Cam Follower CF7/8  (TB)

McGill CFH-1 1/4-S Cam Follower CFH-11/4-S CFH11/4S  (TB)

McGill CFH-7/8-S Cam Follower CFH7/8S  (TB)

McGill ER-16-1" Bearing ER161"  (TB)

McGill MR-56-N Bearing MR56N (TSC)

McGill PCF 2 3/4 Cam Follower PCF2 23/4  (TB)

McGill VCF 3 1/2 Cam Follower VCF3 1/2 VCF 31/2  (TB)

McMaster Carr 96485K249 Spring  (TB)

MDI Mercury Displacement 230NO-24D 30 Amps 600 VAC 24 VDC Coil 230NO24D 230N0

MDI Mercury Displacement 30NO-24D 30 Amps 600 VAC 24 VDC Coil 30NO24D 30N0

MDI Mercury Displacement 33020AU 30 Amps 600 VAC 120 VAC Coil 330NO120AU

Mead KLH-105 Valve Timer KLH105

Mead MV-15 Pneumatic Limit Swtich 3 Way MV15  (TB)

Mean Well S-150-5 5 VDC 30 Amp Power Supply 110-120/220-240 V Input S1505

Mean Well SP-100-24 24 VDC 2.4 Amp Power Supply 110-240 V Input SP10024

Mechetronics SD137A 74 Coil SD137A74

Medar 7893-1M3 Weld Control Board 78931M3 (TSC)

Medar 928-0437V2 Communication Cable Welding Technology Corp 9280437V2

Medar Inc 3005/T96300 952-1551 72 kVA Power Control Sections Spot Welder

Medar Inc 494-8A 4942-8M6 Industrial Control Board 4948A (TB)

Medar Inc 6826-2M0 BD#6826-2M0 68262M0 6826 2M0

Medar Inc 6890-2 PC Board Comm 1995 68902 689021995 BD#6894-2M0

Medar Inc MFDC1200/B98200 Power Inverter Spot Welder 304-0126 3040126 (TSC)

Mencom DP-R-TS 125 VAC 3 Amp Receptacle DPRTS

Mencom L Com MD88FF D9 Programming Panel Interface w/ 3 Amp 115 Vac Receptacle

Mencom Programming Panel Interface D9 w/ 115 Vac Receptacle

Mencom RJ45 Cat5E D9 Programming Panel Interface w/ 3 Amp 115 Vac Receptacle

Mencom RJ45 Cat5E Programming Panel Interface w/ 3 Amp 115 Vac Receptacle

Mencom RS485 D9 Programming Panel Interface w/ 3 Amp 115 Vac Receptacle 82 Ohm

Meritor 09001988 Stud Stud/M22X1.5RH 09 001988 Box of 6

Meritor 1199E1669 Wiper 1199 E 1669 Lot of 3

Meritor 1199H112 Cap Nut Single 1199 H 112 Box of 16

Meritor 1199M2457 Cotter Pin 1199 M 2457 Box of 85

Meritor 1199M2509 Oil Seal Wiper 1199 M 2509

Meritor 1199N1106 Sleeve 1199 N 1106

Meritor 1199N118 Cap Nut 1199 N 118 Box of 13

Meritor 1199N1860 Lube Fitting 1199 N 1860 Lot of 19

Meritor 1199Z3146 Sleeve Oil Seal 1199 Z 3146

Meritor 1199Z3146 Sleeve Oil Seal 1199 Z 3146 Bag of 3

Meritor 1205B2004 Seal Anchor 1205 B 2004 1 Piece with purchase

Meritor 1205K193 Retainer Fin. Bag of 25 1205 K 193

Meritor 1205X726 Oil Seal Ret 1205 X 726 Bag of 3

Meritor 1225N1158 Bushing 1225 N 1158 Box of 2

Meritor 1229S2697 Washer 1229 S 2697 Box of 36

Meritor 1229T1034 Thrust Washer 1229 T 1034 Bag of 18

Meritor 15X1025 Thrust Screw 15 X 1025 Box of 7

Meritor 16TYS3118A End Yoke ES 16TYS31 18A

Meritor 1759K63 Anchor Pin 1759 K 63

Meritor 1779M507 Auto Adj. Tag 1779 M 507 Lot of 13

Meritor 1779Y155 Bleeder Screw 1779 Y 155 Bag of 10

Meritor 1854Z182 Snap Ring Bag of 78 1854 Z 182

Meritor 2000T1398 Lining Kit 2000 T 1398

Meritor 2000X1350 Lining Kit 2000X 1350 2000 X 1350

Meritor 20X1337Z Stud 20 X 1337Z Box of 4

Meritor 20X1805 Stud 20 X 1805 Box of 10

Meritor 2203D8116 Shim .005 Box of 10 2203 D 8116

Meritor 2203H7470 Shim 2203 H 7470 Box of 5

Meritor 2208G423 Gasket 2208 G 423 Box of 27

Meritor 2258C601 Spring 2258 C 601

Meritor 2258S721 Spring 2258 S 721 Box of 4

Meritor 2258Z1118 Spring Bag of 3 2258 Z 1118

Meritor 2258Z416 Spring Shoe RTN 2258 Z 416 Lot of 6

Meritor 2297C5021 Roller 2297 C 5021 Bag of 2

Meritor 2297J3702 Plug 1.75 Inch 2297 J 3702

Meritor 2297U5273 Valve Relief 2297 U 5273 Bag of 5

Meritor 3211U4649 Brake Spider 3211 U 4649

Meritor 3218C237 Rotor 3218 C 237

Meritor 3226W569 Cage Assy 3226 W 569

Meritor 3262A53 Cap Hub Fin 3262 A 53 Box of 4

Meritor 3262K349 Cap Knuckle 3262 K 349

Meritor 3262L90 Cap Hub 3262 L 90

Meritor 3286Y545 Oil Slinger 3286 Y 545 Lot of 2

Meritor 3296B1146 Shift Fork 3296 B 1146

Meritor 3501Z1014 Lever Adjusting 3501 Z 1014 Box of 4

Meritor 3866D550 Cover 3866 D 550 Box of 3

Meritor 62NYSB2431 Flange Yoke 62NYSB24 31

Meritor 69340593 Boot Lot of 7

Meritor 69420736 Retainer Bag of 3

Meritor 9630173 Ring Back Up Box of 10

Meritor 9640875 Piston

Meritor A1199E1253 Oil Seal Wiper A 1199 E 1253 Bag of 6

Meritor A1205H762 Seal A 1205 H 762 Box of 2

Meritor A1205J998 Seal A 1205 J 998 Box of 4

Meritor A133275X518 Slack Adjuster A13 3275 X 518

Meritor A1805C159 Seal A 1805 C 159

Meritor A2257M1079 AY Clamp A 2257 M 1079

Meritor A23866H554 Cap-Assy Oil SE A 2 3866 H 554

Meritor A3144F344 TieRod End A 3144 F3 44

Meritor A3144T1034 Assy Tie Rod A 3144 T 1034

Meritor A3236E1669 Backing Plate A 3236 E 1669

Meritor A333F2658 Hub Assy A 333 F 2658

Meritor A3892E4555 Gear Low Speed A 3892 E 4555

Meritor A53299R4204 AY Act Housing A 5 3299 R 4204

Meritor A63722Q745 AY Shoe & LNG A 6 3722 Q 745

Meritor A833299P6256 AY BKT CHMBR A83 3299 P 6256

Meritor DCM100347 AY Brake DCM 1003 47 DCM1003

Meritor DEFR383 Deflector DEFR38 3 Lot of 8

Meritor KIT4715 Shim KIT 4715