140XBP01000C SCHNEIDER

IS200TRTDH1C
IS200TRTDH1D
IS200TSVCH1A
IS200TSVOH1B
IS200TTPWH1A
IS200TTRUH1C
IS200TTURH1B
IS200TTURH1C
IS200TVBRH2A

分类:

描述

模拟量,如电流、电压、温度、压力等等,它的大小是连续变化的。工业生产,特别是连续型生产过程,常要对这些物理量进行控制。

作为一种工业控制电子装置,PLC若不能对这些量进行控制,那是一大不足。为此,各PLC厂家都在这方面进行大量的开发。目前,不仅大型、中型机可以进行模拟量控制,就是小型机,也能进行这样的控制。

PLC进行模拟量控制,要配置有模拟量与数字量相互转换的A/D、D/A单元。它也是I/O单元,不过是特殊的I/O单元。

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