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• #6 eddie303 őstag Lala6 #5

  2004-08-12 09:03:32 #6

  Összes hozzászólása itt Válaszok az összes hozzászólására itt Válaszok erre a hozzászólásra

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  eddie303

  őstag

  válasz Lala6 #5 üzenetére

  Idézet innen: [L]http://www.aggsoft.com/rs232-pinout-cable/pinout-and-signal.htm[/L]
  
  '' Signals May Have No Fixed Meaning
  
  Only 3 of the 9 pins have a fixed assignment: transmit, receive and signal ground. This is fixed by the hardware and you can't change it. But the other signal lines are controlled by software and may do (and mean) almost anything at all. However they can only be in one of two states: asserted (+12 volts) or negated (-12 volts). Asserted is ''on'' and negated is ''off''. For example, Advanced Serial Port Monitor may command that DTR be negated and the hardware only carries out this command and puts -12 volts on the DTR pin. A modem (or other device) that receives this DTR signal may do various things. If a modem has been configured a certain way it will hang up the telephone line when DTR is negated. In other cases it may ignore this signal or do something else when DTR is negated (turned off).
  De ha ez nem kell, úgyis mindegy :)

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