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&gt;&gt;Output of the reed is 24Vdc (max).<br />
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Don't even try to connect that directly to the serial port, it'll just blow up the UART. You need some device that transforms the pulses to a signal with a voltage and impedance that can work with a serial port and adds the necessary protocol logic. Then, see <a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnfiles/html/msdn_serial.asp" rel="ugc">http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnfiles/html/msdn_serial.asp</a>&nbsp;(&quot;Serial Communications in Win32&quot;) on how to read the data from the serial port.
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>>Output of the reed is 24Vdc (max).

Don't even try to connect that directly to the serial port, it'll just blow up the UART. You need some device that transforms the pulses to a signal with a voltage and impedance that can work with a serial port and adds the necessary protocol logic. Then, see http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnfiles/html/msdn_serial.asp [http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnfiles/html/msdn_serial.asp] ("Serial Communications in Win32") on how to read the data from the serial port.

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Ask this question in the C programming area, the best real time programming experts are there.
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Ask this question in the C programming area, the best real time programming experts are there.

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What 24Vdc (max) means is that the reed device can operate with voltages ranging to 24 Vdc (max), therefore, it can also function with 5 Vdc.<br />
The reed is just a magnetic switch that closes when it sense a magnet.
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What 24Vdc (max) means is that the reed device can operate with voltages ranging to 24 Vdc (max), therefore, it can also function with 5 Vdc.
The reed is just a magnetic switch that closes when it sense a magnet.

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I need to read the output from a magnetic reed device in the PC. The reed device gives a pulse when it sense the metal.<br />
<br />
How can I achieve the above mentioned scenario?<br />
It would be best if sample codes are provided.<br />
<br />
Which pins do I connect the wires from the magnetic reed device to the RS232 and whether can I connect straight to the pins without any interfacing circuitry?<br />
Output of the reed is 24Vdc (max).<br />
<br />

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I need to read the output from a magnetic reed device in the PC. The reed device gives a pulse when it sense the metal.

How can I achieve the above mentioned scenario?
It would be best if sample codes are provided.

Which pins do I connect the wires from the magnetic reed device to the RS232 and whether can I connect straight to the pins without any interfacing circuitry?
Output of the reed is 24Vdc (max).



Read pulses through RS-232

Kernel and system programming is the process of creating the software necessary for a computer or device to function and operate other programs. Some operating systems (such as Microsoft Windows) are proprietary, but others, such as the various Linux distributions, are open source.