IS215VCMIH1B

IS215VCMIH2C
GE IS215VPROH1B
GE IS215VPROH2B
GE IS220PAICH1A
GE IS220PAICH2A
GE IS220PAJCH1A
GE IS220PAOCH1A
GE IS220PCNOH1A

Description

有的DCS为了节省网络接口,把所有的过程控制用的设备即闭环控制器、模拟量数据采集器和逻辑运算器预先连在控制总线上,称为过程控制站。这可以增加过程控制站能接收的I/O点数,又能节省接口。然后再通过接口连到网络上,与人机界面相连。随着计算机计术的发展,控制器的运算能力不断增强,如PC机做的一个控制器能力很强,既可接收模拟量运算,也接收开关量逻辑运算。一个控制器成为网络上的一个结点。通过网络与人机界面相连。

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