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PLC还必须依靠其他新技术来面对市场份额逐渐缩小所带来的冲击，尤其是工业PC所带来的冲击。PLC需要解决的问题依然是新技术的采用、系统开放性和价格。
PLC技术发展的*终趋势仍然是人们所争论的焦点之一。大多数人认为，PLC将会继续失去市场份额；更有甚者认为，在工业PC面前，PLC将会一步一步走向死亡；但也有一部分人相信，一些特殊工业应用领域仍将为PLC提供一定的市场份额。
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AS-B875-111
PROFACE，2980070-D/GLC2300-TC41-24V
MITSUBISHI MDS-C1-V1-90
SIEMENS KSP-A361 C8451-A45-A50-4 AUT5 MCH AXIS BOARD
E728. 0728-06-029 RELIANCE ELECTRIC
DSCS140B 1台
TDM1.2-100-300-W1-220
IC693ALG223
IC693MDL930
IC693MDL740
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远程I/O卡（大）1C31203G01
远程I/O卡（小）1C31204G01
远程通讯大卡 1C31179G01
1756-EN2TR
CR306F OOOABNAMAX VOLTS:600AC
477B477G05
6FC5410-0AY03-0AA1
1756-ENET
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ABB 35AE92F-E9092 16
ABB 3BSE003676R1
ABB 3HAB8101-13/07B
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ABB DSAI130D（3BSE003127R1）
ABB DSAX110
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ABB DSTD108P(3BSE018333R1
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