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PLC Questions

Former Member

Do you have any questions about PLC hardware or programming, please ask me.

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    Hi, I'm very new to PLC and my question is, for NC and NO contacts can i say these are like switches? From the drawing below, why is there a connection after the NO switches/contacts are ON, should this put the NC switch/contact into an OFF state and therfore break the connection?

     

    |   NO       NC            |

    |---| |----|-----|/|-------( )---|

    |         |                     |

    |---| |----|                     |

       NO

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  • 0

    Hi, I'm very new to PLC and my question is, for NC and NO contacts can i say these are like switches? From the drawing below, why is there a connection after the NO switches/contacts are ON, should this put the NC switch/contact into an OFF state and therfore break the connection?

     

    |   NO       NC            |

    |---| |----|-----|/|-------( )---|

    |         |                     |

    |---| |----|                     |

       NO

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