IS200VSVOH1B 逻辑控制

1791DS-IB12
1791DS-IB12
1756-DNB
1756-A17
140DDI84100
EL100T
PG-B3
IC200MDL750
EL100T
1756-IM16I/A
1756-DNB
EL100T
1756-IB16D
1761-NET-ENI

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描述

小型化的PLC将向更专业化的使用角度发展,比如功能更加有针对性、对应用的环境更有针对性等等。大型的PLC与DCS的界线逐步淡化,直至完全融和。

DCS将向FCS的方向继续发展。FCS的核心除了控制系统更加分散化以外,特别重要的是仪表。FCS在国外的应用已经发展到仪表级。控制系统需要处理的只是信号采集和提供人机界面以及逻辑控制,整个模拟量的控制分散到现场仪表,仪表与控制系统之间无需传统电缆连接,使用现场总线连接整个仪表系统。

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