品牌:GE/通用电气
起订:1件
供应:100件
发货:3天内
信息标签:IC694ALG392,供应,电子、电工,工控系统及装备
IC694ALG392———共赢==财富—————停产的备品备件联系我们
PLC控制梯形图
梯形图是一种将PLC内部等效成由许多内部继电器的线圈、常开触头、常闭触头或功能程序块等组成的等效控制线路。图4-7是PLC梯形图常用的等效控制元件符号。
重合同、守信用,基础力量雄厚,备货充足!
公司有强大的营销网络,能为用户提供国外各种系列品牌的PLC.DCS备品备件,
还能为用户寻找偏冷门及停产的品种。
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我们**站在客户的角度上不断开拓、创新。真诚的期待与您的合作!
IC694ALG392
图4-7 梯形图常用等效控制元件符号
a)线圈 b)常开触头 c)常闭触头
图4-8是电动机全压起动的PLC控制梯形图,由FR常闭触头、SB2常闭按钮、KM常开辅助触头与SB1常开按钮的并联单元、KM线圈等零件对应的等效控制元件符号串联而成。电动机全压起动控制梯形在形式上类似于接触器电气控制线路图,但也与电气控制线路图存在许多差异。
如果你已经看到我们的产品,建议你拿起电话联系我们吧,
如果你正在找或是需要用上我们的产品,千万不要错过。
即使你不在这个行业,没有用到这些产品,那请你告诉你的朋友们,选择我们吧,一定会共赢!
您有找不到的备品备件也请及时联系我们,只要您想要的,我们都能为您找到并以**惠的价格回报您!
为客户提供**的产品和服务是我们的宗旨,
通过高质量的产品和客户们建立长期的合作关系是我们的想做的!
IC694ALG392 梯形图中继电器元件物理结构不同于电气元件
PLC梯形图中的线圈、触头只是功能上与电气元件的线圈、触头等效。梯形图中的线圈、触头在物理意义上只是输入、输出存储器中的一个存储位,与电气元件的物理结构不同。
梯形图中继电器元件的通断状态不同于电气元件
梯形图中继电器元件的通断状态与相应存储位上的保存的数据相关,如果该存储位的数据为“1”,则该元件处于“通”状态,如果该位数据为“0”,则表示处于“断”状态。与电气元件实际的通断状态不同。
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