nahbus-coupling device 88fn02b-e gjr2370800r0200 OVP ABB

PMP-314DM
PS10-2H2-DD1-AD3
PS10-2H2-DD2-AD3
PS10-2T2-DD1-AD3
PS10-2T2-DD3-AD3
PS10-2T2-DD6-AD3
PS10-2T2-DDA-AD3
PS12-2T2-8GA-BD3
PS12-2T2-DD1-AD3
PS15-2T2-DD1-AD3

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描述

A,B为输入逻辑变量,M为输出逻辑变量,它们之间的“与”、“或”、“非”逻辑运算关系如表1.1所示。用继电器电路或梯形图可以实现基本逻辑运算,触点的串联可实现“与”运算,触点的并联可实现“或”运算,用常闭触点控制线圈可实现“非”运算(见图1-4)。多个触点的串、并联电路可以实现复杂的逻辑运算,例如图l-3中的继电器电路实现的逻辑运算可用逻辑代数表达式表示为

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