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2 .通用性强,控制程序可变,使用方便
PLC品种的各种硬件装置,可以组成能满足各种要求的控制系统,用户不必自己再设计和制作硬件装置。用户在硬件确定以后,在生产工艺流程改变或生产设备更新的情况下,不必改变PLC的硬设备,只需改编程序就可以满足要求。因此,PLC除应用于单机控制外,在工厂自动化中也被大量采用。
3.功能强,适应面广
现代PLC不仅有逻辑运算、计时、计数、顺序控制等功能,还具有数字和模拟量的输入输出、功率驱动、通信、人机对话、自检、记录显示等功能。既可控制一台生产机械、一条生产线,又可控制一个生产过程。
4.编程简单,容易掌握
目前,大多数PLC仍采用继电控制形式的“梯形图编程方式”。既继承了传统控制线路的清晰直观,又考虑到大多数工厂企业电气技术人员的读图习惯及编程水平,所以非常容易接受和掌握。梯形图语言的编程元件的符号和表达方式与继电器控制电路原理图相当接近。通过阅读PLC的用户手册或短期培训,电气技术人员和技术工很快就能学会用梯形图编制控制程序。同时还提供了功能图、语句表等编程语言。
PLC在执行梯形图程序时,用解释程序将它翻译成汇编语言然后执行(PLC内部增加了解释程序)。与直接执行汇编语言编写的用户程序相比,执行梯形图程序的时间要长一些,但对于大多数机电控制设备来说,是微不足道的,完全可以满足控制要求。
Hoffman Wohner EASY Connectors Busbar, 32485, HB32485, EMC6000-L
NUMATICS MALE ELBOW SWIVEL 3/8 NPT X 1/2 TUBE, 308-022, 136S
Square D 24120BA, Merlin Gerin B25A, Multi9 C60, MG24120, 1610A50
Scheider Circuit breaker 60150, 2 pole, 35 amp, 125/240V, 6415375, 146D
CROUZET 81521501 PRESSURE DECAY SENSOR & 81532104 BASE, 1560P
Reliance Electric 0-51378-15, Shipsameday W/2-3days 1534Z
Swagelok SS-10-MTA-1-4RT, Shipsameday, ZB30
SMC Compact Air Cylinder 5/8 Bore 1/4 Stroke, NCDJPB15-025D, 1631A8
MSA 7165/0223 24VDC-CD Ship Same Day W/2-3 Days Shipping 1654A49
Applied Motion HT23399, SHIPSAMEDAY, Rack D D98
Vishay USB Sensor Kit Proximity Ambient, VCNL4000, Shipsameday Q68A
PRESSURE SWITCH ADJUSTABLE APS-801-E
Madison M3784-110
IFM Efector TR2430 Port G1/2 A, 14305, With Cable 103K
Vickers 120V Coil, 319124, Shipsameday, 1215J
Testron Driver Deinitialize 7-way T-25676-1, T25676-I, Shipsameday 129L
Merlin Gerin MG24142 Circuit Breaker, B Curve, 3 Pole, 3A-type B, 88043 1643A62
LEMO PHG.OK Cable 5 Pins, Shipsameday1551A2
Durant 6-Y-33939-400-RMFU, 111P140, 6Y33939400RMFU, Shipsameday 1174G
SIEMENS LOGIC CONTROL Modu,6ED1052-1HB00-0BA2, 150Y
SIEMENS LOGIC CONTROL Modu,6ED1052-1HB00-0BA1, 150Z
Nupro BELLOW SEAL VALVE SS-4BK-V51-1C Shipsameday, A10
31DLR6K, SHIPSAMEDAY W54
Wenglor Reflextaster Reflex Sensor, YR24PCT2, Exc Cond, Shipsameday 1604C6
Mcquade Ind, 84-012-2025, SHIPSAMEDAY 1620N
SMC CDM2KB20300AH7A1, CDM2KB20-300A-H7A1, Shipsameday 1178R
HUBBELL ANGLE PLUG 3 POLE 3 WIRE 50A 125V, 9361, SHIPSAMEDAY RACK G G70
VERIFLO VALVE 1/4 COMP, 944MSTS, Shipsameday102PM
ABB Circuit Breaker 300amp, 3 Pole, S5N SACE S5 (chip 2 Coner) Rack C C26
Linear Volt Regulators 5.0V 1.0A POS, L7805ACD2T SHIPSAMEDAY1634B
Yamatake FL2R20J6HD, FL2R-20J6HD, 0516U, Shipsameday 130AC
Siemens 3RV2021-4PA10, 3RV20214PA10 , SHIPSAMEDAY1643A24
Parker P1JS050KS0050, P1J-S050KS-0050, Shipsameday 135AE
Lumberg RK120M-14/3M Mini 12 Pole Plug Shipsameday W/2-3 Daysshipping 1472T
Ferraz Protistor M300621, 1250VAC, 400A, Shipsameday W/2-3daysshipping 1556F
Numatics 554BB500MT00061, 24VDC, .2Amp 150psig-Air, 236-384B 1375Z5
Linear, LT1761ES5-BYPTRMPBF, IC REG LDO ADJ 0.1A TSOT23-5 S12
Square D 8501-PH80E Type P1.40, 8501-P1.4 ShipSameDay BOX B 1614B35
Automatic Valve 413D43S39DS3DB7, A7201-DB 141G
Rexroth WD432747 A MM-10D-10, Shipsameday 1559A11 Box 1
AXV Tantalum Capacitor Solid Smd 25V, TAJC106K025R, 581-TAJC10, Lot Of 391, G23
AXV Tantalum Capacitor Solid Smd 25V, TAJC106K025R, 581-TAJC10, Lot Of 391, G23
Deutsche Star Rexroth Runner Block Ball Bearing 1623-614-10, D-97419 Rack E E3
Cole Parmer WATER BATH 120V 600W 5A, 12501-00, 9020862
Fuji Module Transistor Block 2MBI50120, Shipsameday 1637S
Harvatek HT-260URO-3090, Shipsameday H35
Numatics 1062DM1-03A, ShipSameDay 1651M
Omega CN49A-F1B-R2-LV, 1/32