Ti 305

Running the TI software on an old TI 305.
I have power lights and the communication module 305 03DM shows the diagnostic lights on and the power on. The comm light will come on when the computer attempts to go "online". The pc never connects.
I have double checked the baud rate and the station number, and the dip switches seem to be correct.

I do not have any valid manuals with regards to the PLC to PC communication.

Any help and suggestions would be greatly appreciated.

Current supplier for 305 is AutomationDirect.
Koyo is the original supplier for all the re-branded models.
Link:
http://www.automationdirect.com/static/manuals/d3dcu/d3dcu.pdf
http://www.automationdirect.com/static/manuals/d3user/d3user.pdf

Helpful indeed.

The pinouts listed here would work for the TI software as it does with the newer stuff?

It should, see page 8, 2nd diagram in the manual in the first link. The one that says Personal Computer to DCU (RS232C).