WHAT IS POSITIVE SWITCHING AND NEGATIVE SWITCHING IN PROXIMITY SWITCHES.
ALL I KNOW IS PNP-NO/PNP-NC AND NPN-NO/NPN-NC.
WILL ANY BODY HELP ME.
THANKS
CHANDRU
Thread: PROXIMITY SWITCHES
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12-12-2007, 01:28 PM #1
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PROXIMITY SWITCHES
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12-12-2007, 02:33 PM #2
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I think you are refering to PNP or NPN which relates to either sink or source, IOW you can have a input device that sources (PNP) that switches the positive rail into a sinking input.
Or with NPN, vice-versa, switches to the common or - rail into a source type input.
By input, I am refering to a PLC type input card.
P.S. turn your caps off, it is equivalent of shouting.
Al.CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
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