Hi Leslie,
First you need to determine the cabling. Check the microP's documentation for the pinout of it's serial port. In the simplest case, without any handshaking, you only need 3 lines: Rx, Tx and GND.
Once you have the cabling you need to know how the serial port of the microP is configured. I'm not familiar with these devices, but I assume that the serial port on the micro is configured by the firmware. In any case, check the documentation of the microP to determine the serial port setting or how to configure them. You need to look for:
Baud Rate.
Number of data bits.
Parity (if any)
Number of stop bits.
Handshaking.
The serial port setting on the PC should be the same as the setting on the microP.
DiegoF
National Instruments
