Hello, I'm also trying to establish a connection to SLC 5/04 using null modem cable through RS232 DF1 device driver. I have the backup copy of the current program and channel 0 is configured correctly for DF1 Full Duplex. Used two different computers, one with windows xp SP2 and another with windows 7. Both computers has physical com ports. Tried auto configure as well as manual settings, but no luck for two days.
In the end I was about to give up, I was constantly clicking on auto configure button and all of a sudden the connection was successful. I was able to go online as well as perform upload and download. At the same time I tried the second computer with windows 7 and the connection was successful on the first try. I was able to perform the same operations on the second computer as well.
On second day same connection problem. I'm not able to connect with either computer. Nothing was changed. I tried clicking on the auto configure button a numerous times, but no luck.
Any suggestions would be highly appreciated.
Thanks