Method of getting 2 values simultaneously using RS232C serial communication

Hello,

I am new to NI/CVI LAB Windows. All I have to do is that :

Only I have to read 2 values simultaneously in 2 different numeric control panel using RS232C serial communication which is connected with sensors and after each equal interval of time I have to read this (suppose, I pressed start button and data come into numeric control panel then I will press stop button and note down the values then again press start button and next value will come on panels).

Can you please suggest me steps for this process.

ANY HELP WILL BE APPRECIATED

THANK YOU