Read data from PLC DL 06 in c#

Question

Hi all,
Would you please give me an example, how I can read data from 3(three) PLC DL 06 simultaneously using RS232 and write it in 3 text files.
Eg.
0,1,0,0,0,1,0
0,0,1,1,0,0,0
1,1,0,0,1,0,1
Thanks in advance.
Triphon.