How to read the voltage difference between the 2 pins of a RS232?
Hi, I'm new in this field and I'm having a problem in the acquisition of data from a RS232 port. In fact, I don't know if it is possible to do.
What I would do, is to read the voltage difference between the two pins of the port. It's because I want to measure the temperature (and save the data) in a very simple way. I have 6 thermocouples and I thought weld at the different pins of the RS232 interface and acquire analog signals in mV with the computer. Then, I would use a thermometer to calibrate the values.
Is it possible to do? How? I searched a lot but I can't find any tutorial or similar to this example...
No, it is not possible to do it with the serial port. The port is not an A/D converter. A simple RS-232 tutorial will tell you that the port is binary in nature.
Tags: NI Hardware
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