国际电工委员会(IEC)在1985年的PLC标准草案第3稿中,对PLC作了如下定义:“是一种数字运算操作的电子系统,专为在工业环境下应用而设计。它采用可编程序的存储器,用来在其内部存储执行逻辑运算、顺序控制、定时、计数和算术运算等操作的指令,并通过数字式、模拟式的输入和输出,控制各种类型的机械或生产过程。可编程序控制器及其有关设备,都应按易于使工业控制系统形成一个整体,易于扩充其功能的原则设计。”从上述定义可以看出,PLC是一种用程序来改变控制功能的工业控制计算机,除了能完成各种各样的控制功能外,还有与其他计算机通信联网的功能
ALLOT COMMUNICATIONS SGSE14BASE10GE / SGSE14BASE10GE
ALLOT COMMUNICATIONS SGSE14BASE10GE / SGSE14BASE10GE
ALLOT COMMUNICATIONS SGSE14BASE10GE / SGSE14BASE10GE
ALLOT COMMUNICATIONS SGSE14BASE10GE / SGSE14BASE10GE
Automatic die cutter ETERNA E1620SAL-EXTRA 2016year / # 8 6F1 2529
Automatic die cutter ETERNA PE 1620 Sa Extra 2013 / # 8 6F1 9899
BOSCH R911200064 / R911200064
BOSCH R911200204 / R911200204
BOSCH R911200228 / R911200228
BOSCH R911200244 / R911200244
BOSCH R911200321 / R911200321
BOSCH R911200369 / R911200369
BOSCH R911200567 / R911200567
BOSCH R911201298 / R911201298
BOSCH R911201304 / R911201304
Eliog PNO 80 dryer for fruit, vegetables, mushrooms / # 8 8B2 4157
Eliog PNO 80 烘干机的水果、蔬菜、蘑菇/# 8 8b2 4157
ESA VT170 VT170WA0000 LCD contrast adj. Operator Interface Panel (used)
FAG 232/710-B-K-MB-C3 / 232710BKMBC3
FAG 232/710-b-k-mb-c3/232710 bkmbc 3
FAG 294/850E.MB.H35.M32CX Spherical Roller Thrust Bearing 850 x 1440 x 354 mm
FAG 294/850E.MB.H35.M32CX Spherical Roller Thrust Bearing 850 x 1440 x 354 mm
FAG Z-522934.04.DRGL / Z52293404DRGL
FAG z-522934.04。 drgl/Z 52293404 drgl
LCI CONV #。 接口 , 3bhe046836r0102 ABB GF d563 a102 gfd563a102
LCI CONV. INTERFACE, 3BHE046836R0102 ABB GF D563 A102 GFD563A102
MITSUBISHI FR-HC2-H560K-PKG / FRHC2H560KPKG
OMEGA ENGINEERING FF-KI-24-TWSH-300M / FFKI24TWSH300M
Ripper tine ripper SkanCraft SCVR 45 / # 8 1C2 9273
Ripper tine ripper SkanCraft SCVR 65 / # 8 1C2 3634
Ripper 松 Ripper skancraft scvr 45/# 8 1c2 9273
Ripper 松 Ripper skancraft scvr 65/# 8 1c2 3634
RUIJIE BMY 1300 CE / # 8 6F1 1334 semi-automatic die cutter
RUIJIE BMY 1500 CE / # 8 6F1 6814 semi-automatic die cutter
SICK, INC. MSC800-3720T00 / MSC8003720T00
SIEMENS 6DL54228AB130BA0 / 6DL54228AB130BA0
SIEMENS 6DL54228XB040BA5 / 6DL54228XB040BA5
SkanCraft SCHMAG 1500 / # 8 1C2 1624 hydraulic magnet
Skancraft schmag 1500/# 8 1c2 1624 液压磁铁
SkanCraft SCMT 26 DEMO / # 8 1C2 2058 demolition shears
Skancraft SCMT 26 演示/# 8 1c2 2058 拆迁剪
SkanCraft SCRP 24 DEMO / # 8 1C2 0269 demolition shears
Skancraft scrp 24 演示/# 8 1c2 0269 拆迁剪
TIMKEN 294/800EMW40RW50 / 294800EMW40RW50
TIMKEN 294/800emw40rw50/294800emw40rw50
TIMKEN B-9294-A / B9294A
TIMKEN b-9294-a/b9294a
TIMKEN B-9310-G / B9310G
TIMKEN b-9310-g/b9310g
TIMKEN B-9851-A / B9851A
TIMKEN b-9851-a/b9851a
TIMKEN LM286249AA-904A9 / LM286249AA904A9
TIMKEN lm286249aa-904a9/lm286249aa904a9
TIMKEN NP378108-90KA1 / NP37810890KA1
TIMKEN np378108-90ka1/np37810890ka1
TIMKEN NP623652-90KA1 / NP62365290KA1
TIMKEN np623652-90ka1/np62365290ka1
TIMKEN U-1075-G FXCL / U1075GFXCL
TIMKEN u-1075-g fxcl/u1075gfxcl
TIMKEN U-3620-G FLCL / U3620GFLCL
TIMKEN u-3620-g FLCL/U 3620 gflcl
TOSHIBA WX9450KAXAADW / WX9450KAXAADW
TOSHIBA WX9460KAXAADW / WX9460KAXAADW
TOSHIBA WX9470KAXAADW / WX9470KAXAADW
TOSHIBA WX9480KAXAADW / WX9480KAXAADW
Vibro-hammer for sheet piles with an arm for an excavator / # 8 1C2 0322
Vibro-锤 适用于床单成堆的手臂一个挖掘机/# 8 1c2 0322
WINTERS D81RIR24CSPSF2N-300# / D81RIR24CSPSF2N300
WINTERS D81RIR24SSPSF2N-300# / D81RIR24SSPSF2N300 |