PLC作用：
PLC是多数工业控制和工厂自动化系统的核心组成部分，通常被称为工厂的“大脑"，PLC 通过接收和处理来自传感器和机器的数据来实现广泛的功能，然后使用这些数据来控制和制动外部设备。除此之外，成功的设计必须具备可靠性、系统稳定性以及与连接的自动化系统的互操作性。
现在工业上使用可编程逻辑控制器已经相当接近于一台轻巧型计算机，甚至已经出现集成个人计算机(采用嵌入式操作系统)与PLC结合架构的可编程自动化控制器(Programmable Automation Controller，简称PAC)，能透过数字或模拟输入/输出控制机器设备、制造处理流程及其他控制的电子系统。
1、用于开关量控制
目前，PLC的首要目标，也是别的控制器无法与其比拟的，就是它能方便并可靠地用于开关量的控制。用PLC进行开关量控制实例是很多的，冶金、机械、轻工、、纺织等等，几乎所有工业行业都需要用到它。
2、用于模拟量控制
模拟量，如电流、电压、温度、压力等等，它的大小是连续变化的。工业生产，特别是连续型生产过程，常要对这些物理量进行控制。用PLC实现模拟量控制是*可能的。
PLC进行模拟量控制，要配置有模拟量与数字量相互转换的A/D、D/A单元。它也是I/O单元，不过是特殊的I/O单元。
3、用于运动控制
实际的物理量，除了开关量、模拟量，还有运动控制。PLC可接收计数脉冲，加上PLC有数据处理及运算能力，若再配备相应的传感器(如旋转编码器)或脉冲伺服装置，则*可以依NC的原理实现种种控制。
4、用于数据采集
随着PLC技术的发展，其数据存储区越来越大。PLC还可配置上小型打印机，定期把DM区的数据打出来。PLC也可与计算机通讯，由计算机把DM区的数据读出，并由计算机再对这些数据作处理。这时，PLC即成为计算机的数据终端。
5、用于信号监控
PLC自检信号很多，内部器件也很多，多数使用者未充分发挥其作用。其实，*可利用它进行PLC自身工作的监控，或对控制对象进行监控。
Lot Of 4900, PANASONIC Ceramic Capacitor ERJ-3GEYJ153V, SHIPSAMEDAY#AC71
Lot Of 4900, PANASONIC Ceramic Capacitor ERJ-3GEYJ103V SHIPSAMEDAY#AC36
Lot Of 4900, PANASONIC Ceramic Capacitor ERJ3EKF1003V, SHIPSAMEDAY#AC48
LOT OF 49, SMC fitting KJ MINI ONE TOUCH KJW06-M5, KJW06M5, SHIPSAMEDAY#1638B14
Lot Of 4800, PANASONIC Chip Resistor ERJ-6GEYJ301V, SHIPSAMEDAY#N115
Lot Of 4800, PANASONIC Chip Resistor ERJ-6GEYJ100V, SHIPSAMEDAY#W97
Lot Of 4800, PANASONIC Chip Resistor ERJ-6ENF10R0V, SHIPSAMEDAY#N128
Lot Of 4800, PANASONIC Chip Resistor ERJ-3GEY0R00V, SHIPSAMEDAY#N118
Lot Of 4800 PANASONIC Ceramic Capacitor ERJ-3EKF5111V, SHIPSAMEDAY#AC55
Lot Of 4800 CAL-CHIP CHIP RESISTOR RM06F1002CT, SHIPSAMEDAY#AC4
Lot Of 480, Coilcraft Fixed Inductors 0805CS, 0805CS-080XJLC, SHIPSAMEDAY#AA85
LOT OF 48, 3M SHROUDED HEADER 20 POS STRAIGHT, 2520-6002UB, SHIPSAMEDAY #AB8
LOT OF 476 Panasonic CAP ALUM 33UF 20% 50V SMD, EEE-FK1H330P, SHIPSAMEDAY#Y83
LOT OF 475, Samtec TSW-102-02-S-S, 2mm Socket Strip, SHIPSAMEDAY #169S
Lot Of 475, Murata Ceramic Capacitor, GRM21BR71E225KA73L, SHIPSAMEDAY#V194
Lot Of 474, Panasonic ECJ-2FB1E105K, PCC2319CT-ND, CAP CER 1UF 25V 10% X5R 0#V82
Lot Of 4700, YAGEO Chip Resistor RC0603JR-073K3L, SHIPSAMEDAY#AC9
Lot Of 4700, PANASONIC Chip Resistor ERJ-6ENF2102V, SHIPSAMEDAY#W100
Lot Of 4700, PANASONIC Chip Resistor ERJ-3GEYJ560V, SHIPSAMEDAY#N113
Lot Of 4700, PANASONIC Chip Resistor ERJ-3EKF49R9V, SHIPSAMEDAY#X60
Lot Of 4700, PANASONIC Chip Resistor ERJ-3EKF10R0V, SHIPSAMEDAY#N122
Lot Of 4700, PANASONIC Chip Resistor ERJ-1GEF1000C, SHIPSAMEDAY#N121
Lot Of 468, Keystone Electronics 5001 Circuit Board Hardware, 534-5001 , #V7
Lot Of 4600, Rohm Chip Resistor, MCR10EZHF4751 , SHIPSAMEDAY #N157
Lot Of 4600, PANASONIC Chip Resistor ERJ-3GEYJ101V, SHIPSAMEDAY#W107
Lot Of 4600, PANASONIC Chip Resistor ERJ-3GEY0R00V, SHIPSAMEDAY#N135
Lot Of 46, Phoenix Contact 12 Position Terminal Block, 1803374, SHIPSAMEDAY #Y17
Lot Of 4500, PANASONIC Chip Resistor ERJ-6GEYJ330V, SHIPSAMEDAY
Lot Of 4500, PANASONIC Chip Resistor ERJ-3GEYJ100V, SHIPSAMEDAY#N124
Lot Of 4500, PANASONIC Ceramic Capacitor ERJ-3GEYJ472V, SHIPSAMEDAY#AC84
Lot Of 450, PANASONIC Ceramic Capacitor, ECJ-0EB1H101K, SHIPSAMEDAY#V167
LOT OF 450, AVX Tantalum Capacitors Polymer SMD 6.3volts, TCJB107M006R0070 #AA7
Lot Of 450, AVX PBRC-12.00HR CERAMIC RESONATOR, 12MHZ, SMD, SHIPSAMEDAY#S88
Lot Of 45, Texas IC REG LINEAR 3.3V 500MA, LP2989AIMM-3.3/NOPB, SHIPSAMEDAY
Lot Of 45, Swagelok Male Adapter 1/4" Npt X 10mm, B-10-MTA-1-4, Rack A #A41
LOT OF 45, Samtec Conn Power Mate Terminal Strip, IPBT-105-H1-T-D-RA, #AB9
Lot Of 45 Microchip IC REG LDO 1.8V 1.5A TO263-3, MIC39150-1.8WU, SHIPSAMEDAY#Y4
Lot Of 4400, PANASONIC Chip Resistor ERJ-6ENF1502V, SHIPSAMEDAY#W104
Lot Of 4400, PANASONIC Chip Resistor ERJ-3GEYJ302V, SHIPSAMEDAY#N114
Lot Of 4400, PANASONIC Chip Resistor ERJ-3GEYJ102V, SHIPSAMEDAY#W99
Lot Of 44, Maxim MAX6966AEE+, LED Display Drivers 10-Port Constant LED Dr #Q47
Lot Of 44 Relay Omron Idec Potter Brumfield Releco Culter Hammer, #137L5
Lot Of 4300, PANASONIC Chip Resistor ERJ-3EKF1001V, SHIPSAMEDAY#N134
Lot Of 4300, KOA Thick Film Resistors, RK73B2ALTD102J, SHIPSAMEDAY#AC5
Lot Of 430, PANASONIC CAP ALUM 47UF 20% 35V SMD, EEE-FK1V470P, #AB39
Lot Of 43, Texas Power Switch 2A 6-P, TPS22924CYZPT-BKN, TPS22924CYZPT/BKN #V136
Lot Of 43 Molex CONN HEADER R/A 10POS 4.2MM, 0039301101, WM1367-ND, SHIPSAMEDAY
LOT OF 43 Centering Ring NW50 Assembly 304 SST, ONLY 8 WIH O-RING, SHIPSAMEDAY
Lot Of 43 AVX TAJB336K016R Cap Tant Solid 33uF 16V B CASE 10% (3.5 X 2.8 X 1#W28
Lot Of 428, AVX Corporation CAP CER 18PF 250V 5% 0603, SQCSVA180JAT1A, N#42
