IMASO11

IMASO11

IMASO11

 输入继电器是PLC接收外部输入的开关量信号的窗口。PLC通过光耦合器，将外部信号的状态读入并存储在输入映像寄存器中。输入端可以外接常开触点或常闭触点，也可以接多个触点组成的串并联电路或电子传感器(如接近开关)。在梯形图中，可以多次使用输入继电器的常开触点和常闭触点。  

 图3–6是一个PLC控制系统的示意图，X0端子外接的输入电路接通时，它对应的输入映像寄存器为1状态，断开时为0状态。输入继电器的状态惟一地取决于外部输入信号的状态，不可能受用户程序的控制，因此在梯形图中绝对不能出现输入继电器的线圈。

＆ 公司全称  ： 厦门泰尼电气有限公司
＆ 销售代表  ： 小黄
＆ 洽谈电话  ：  0592-6809319 
＆手机：18950191386
＆ 商务 QQ   ：  2917675397
＆ 传真（FAX)：  0592-6890859 （请注明，01006收）
＆ 公司地址  ：  厦门市海沧区海沧街道滨湖一里7号
＆ 公司网址  ：  www.xmtaini.com

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