AS-S908-120 整流模块
可编程控制器（programmable logical controller，简称PLC）已经越来越多地应用于工业控制系统中，并且在自动控制系统中起着重要的作用。所以，对PLC的正确选择是重要的。
面对众多生产厂家的各种类型PLC，它们各有优缺点，能够满足用户的各种需求，但在形态、组成、功能、网络、编程等方面各不相容，没有一个统一的标准，无法进行横向比较。下面提出在自动控制系统设计中对PLC选型的一些看法，可以在挑选PLC时作为参考。
可以通过以下几方面的比较，挑选到适合的产品。
这一点尤为重要。在自动控制系统设计之初，就应该对控制点数（数字量及模拟量）有一个准确的统计，这往往是选择PLC的首要条件，一般选择比控制点数多10%~30%的PLC。这有几方面的考虑：
1、可以弥补设计过程中遗漏的点；
2、能够保证在运行过程中个别点有故障时，可以有替代点；
3、将来增加点数的需要。
工作环境是PLC工作的硬性指标。自控系统将人们从繁忙的工作和恶劣的环境中解脱出来，就要求自控系统能够适应复杂的环境，诸如温度、湿度、噪音、信号屏蔽、工作电压等，各款PLC不尽相同。一定要选择适应实际工作环境的产品。
BALLUFF BES-516-325-E4-C-PU-03 BES516325E4CPU03
BALLUFF BES-516-325-E4-C-S-4-00.5 BES516325E4CS400
BALLUFF BES-516-325-E4-Y PROXIMITY SENSOR BES516325E4Y
BALLUFF BES-516-325-E4-Y-3 BES516325E4Y3
BALLUFF BES-516-325-E4-Y-3 BES516325E4Y3
Balluff BES-516-325-E4-Y5 Inductive Proximity Sensor Series BES
Balluff BES-516-325-E4-Y-PU-05 Proximity Sensor
BALLUFF BES-516-325-E4-Y-PU-08 BES516325E4YPU08
Balluff BES516-325-E5-C-S4 Proximity Switch 10-30VDC
Balluff BES516325E5CS4, Inductive Proximity Sensor -
BALLUFF BES-516-325-E5-R-05 BES516325E5R05
BALLUFF BES-516-325-E5-R-05 BES516325E5R05
BALLUFF BES-516-325-E5-R5 BES516325E5R5
BALLUFF BES-516-325-E5-R5 BES516325E5R5
BALLUFF BES516-325-G-E4-C-02 BES516325GE4C02
BALLUFF BES516-325-G-E4-C-02 BES516325GE4C02
BALLUFF BES-516-325-G-E4-Y-03 BES516325GE4Y03
BALLUFF BES-516-325-G-E4-Y-03 BES516325GE4Y03
BALLUFF BES-516-325-G-E4-Y-05 BES516325GE4Y05
BALLUFF BES-516-325-G-E5-Y-S-4 BES516325GE5YS4
Balluff BES516-325-G-S4-C, 150373, Bes 516-325-G-S4-C, BES516325GS4C #1328W
BALLUFF BES-516-325-S4-CW BES516325S4CW
Balluff BES-516-325-S4-W Inductive Sensors
Balluff BES-516-325-S4-W Inductive Sensors 128500
BALLUFF BES-516-325-S4-W BES516325S4W
Balluff BES-516-325-S4-Y5 BES516325S4Y5 Proximity Switch - No Box
BALLUFF BES-516-325-S4-YL BES516325S4YL
BALLUFF BES-516-325-SA-15 BES516325SA15
BALLUFF BES-516-325-SA-15 BES516325SA15
BALLUFF BES-516-325-SA-35-05 BES516325SA3505
BALLUFF BES-516-325-SA-56-03 BES516325SA5603
BALLUFF BES-516-325-SA-56-03 BES516325SA5603
BALLUFF BES-516-325-SA96-G-E5-C-S4 BES516325SA96GE5
Balluff BES516-325-SA96-G-S4-C Inductive Proximity Sensor 4mm 10-30VDC ! !
BALLUFF BES-516-325-S-CW BES516325SCW
BALLUFF BES-516-326-AO-Z-5 BES516326AOZ5
BALLUFF BES-516-326-AO-Z-5 BES516326AOZ5
Balluff BES516-326-B0-C, BES516326B0C, 10-30VDC, Shipsameday #1616P
Balluff BES-516-326-B0-C5 Sensor BES516326B0C5
BALLUFF BES-516-326-BO-C BES516326BOC
BALLUFF BES-516-326-BO-C-03 BES516326BOC03
BALLUFF BES-516-326-BO-C-05 BES516326BOC05
BALLUFF BES-516-326-BO-C-PU-05 BES516326BOCPU05
BALLUFF BES-516-326-DOL-PU BES516326DOLPU
BALLUFF BES-516-326-E4-C-03 BES516326E4C03
BALLUFF BES-516-326-E4-C-03 BES516326E4C03
BALLUFF BES-516-326-E4-C-05 BES516326E4C05
BALLUFF BES-516-326-E4-Y-05 BES516326E4Y05
BALLUFF BES-516-326-E4-Y-05 BES516326E4Y05
BALLUFF BES-516-326-E4-Y-PU-03 BES516326E4YPU03
BALLUFF BES-516-326-E5-C-S4 BES516326E5CS4
BALLUFF BES-516-326-G-E4-Y-05 BES516326GE4Y05
BALLUFF BES-516-326-G-E5-Y-S-49 BES516326GE5YS49
BALLUFF BES-516-326-G-E5-Y-S-49 BES516326GE5YS49
Balluff BES516-326-G-E5-Y-S49 Proximity Switch ! !
BALLUFF BES-516-326-GS-4-C BES516326GS4C
BALLUFF BES-516-326-GS-4-C BES516326GS4C
BALLUFF BES-516-326-G-S4-H BES516326GS4H
BALLUFF BES-516-326-G-S4-L BES516326GS4L
BALLUFF BES-516-326-N-03-KIT BES516326N03KIT
Balluff BES-516-326-S1-C Proximity Switch - No Box
BALLUFF BES-516-326-S4-C PROXIMITY SENSOR
BALLUFF BES-516-326-S4-CW BES516326S4CW
BALLUFF BES-516-326-S4-L BES516326S4L
BALLUFF BES-516-326-S4-Y BES516326S4Y
BALLUFF BES-516-326-S-5-Z BES516326S5Z
BALLUFF BES516326SA34 **NNB**
BALLUFF BES-516-326-SA96-G-E5-Y-S4 INDUCTIVE SENSOR 24VDC 130MA PNP,
BALLUFF BES-516-326-SA96-G-E5-Y-S4 INDUCTIVE SENSOR 24VDC 130MA PNP, *
BALLUFF BES-516-326-V-S-4 BES516326VS4
BALLUFF BES-516-327-AO-Y BES516327AOY
BALLUFF BES-516-327-BO-C-05 BES516327BOC05
Balluff BES-516-327-E4-Y-05 Proximity Sensor 10-30vdc Sn 10mm BES516327E4Y05
BALLUFF BES-516-327-E5-Y-S4 INDUCTIVE SENSOR * OUT OF BOX*
BALLUFF BES-516-327-E5-Y-S4 BES516327E5YS4
BALLUFF BES-516-327-E5-Y-S4 BES516327E5YS4
BALLUFF BES-516-327-G-E5-Y-S 4 PROXIMITY SENSOR P/N 552282 15MM IN PACKAGE
BALLUFF BES-516-327-G-S 4-H * * PROXIMITY SWITCH
BALLUFF BES-516-327-G-S4-H BES516327GS4H
BALLUFF BES-516-327-S4-C BES516327S4C
BALLUFF BES-516-327-S4-C INDUCTIVE PROXIMITY SENSOR 10-30V 10MM IN PACKAGE
balluff BES-516-327-S4-C inductive sensor
BALLUFF BES-516-327-S4-C BES516327S4C
BALLUFF BES516-327-S-4-C PROXIMITY SWITCH * IN FACTORY BAG*
Balluff BES516-327-S4-C, BES516327S4C ShipSameDay With 2-3 Days Shipping #1612A1
BALLUFF BES-516-327-S-4-CW BES516327S4CW
BALLUFF BES-516-327-S-4-H BES516327S4H
BALLUFF BES-516-329-BO-C-0 BES516329BOC0
BALLUFF BES-516-329-BO-C-03 BES516329BOC03
BALLUFF BES-516-329-BO-C-05 BES516329BOC05
BALLUFF BES-516-329-BO-C-05 BES516329BOC05
BALLUFF BES-516-329-E3R-03 BES516329E3R03
BALLUFF BES-516-329-G-E4-C-05 BES516329GE4C05
BALLUFF BES-516-329-GE-4Y BES516329GE4Y
BALLUFF BES-516-329-G-E4-Y-PU-05 BES516329GE4YPU1
BALLUFF BES-516-329-G-E5-Y-S-4 BES516329GE5YS4
BALLUFF BES-516-335-AO-X-PU BES516335AOXPU
BALLUFF BES-516-335-AO-X-PU BES516335AOXPU
Balluff BES-516-343-E0-C-05 Sensor
BALLUFF BES-516-343-E0-C-PU 05 PROXIMITY SENSOR
BALLUFF BES516-343-E0-X-PU PROXIMITY SWITCH * *
BALLUFF BES-516-343E3L BES516343E3L
BALLUFF BES-516-343-E3-L-PU-05 BES516343E3LPU05
BALLUFF BES-516-343-E3-SP02 BES516343E3SP02
BALLUFF BES-516-343-E3-SP02 BES516343E3SP02
BALLUFF BES-516-343-E4-C BES516343E4C
BALLUFF BES-516-343-E4-C-SP02 BES516343E4CSP02
Balluff BES-516-343-E4-C-SP04 Proximity Sensor
Balluff BES-516-343-E4-C-SP04 Proximity Sensor - No Box
Balluff BES-516-343-E4-C-SP04 Proximity Sensor (Pack of 3) - No Box
BALLUFF BES-516-343-E5-D-S-49 BES516343E5DS49
BALLUFF BES-516-343-EO-C-05 BES516343EOC05
BALLUFF BES516-343-EO-C-PU-05 BES516343EOCPU05
Balluff BES-516-343-G-E4C-03 8MM Proximity Sensor ! !
BALLUFF BES-516-343-G-E4-C-03 CABLE ***NIB***
BALLUFF BES516-343-G-E5-C-S49 BES516343GE5CS49
BALLUFF BES-516-343-S4-C PROXIMITY SWITCH * OUT OF BOX*
BALLUFF BES-516-343-SA10-3 BES516343SA103
BALLUFF BES-516-343-SA16-C-PU-03 BES516343SA16CPU
BALLUFF BES-516-343-SA16-C-PU-03 BES516343SA16CPU
BALLUFF BES-516-343-SA-2 BES516343SA2
BALLUFF BES-516-345-M0-Z BES516345M0Z
BALLUFF BES-516-345-M0-Z BES516345M0Z
BALLUFF BES516-345-MO-C-05 BES516345MOC05
Balluff BES-516-345-MO-X5 Inductive Proximity Sensor 3 Wire NPN NO 10-30VDC NIB
BALLUFF BES-516-346-H0-Y INDUCTIVE SENSOR * IN A BAG*
BALLUFF BES516-347-M0-C-S4-002 BES516347M0CS400
BALLUFF BES-516-347-MO-C-05 528632 PROXIMITY SENSOR !!! QUANTITY!!
BALLUFF BES-516-347-MO-C-S-49 BES516347MOCS49
BALLUFF BES-516-347-MO-C-S-49 BES516347MOCS49
BALLUFF BES516347MOCS49PU.2 BES516347MOCS49P
BALLUFF BES-516-347-MO-K BES516347MOK
Balluff BES-516-347-MO-Y-SP01 Remote Transmitter Sensor
