Problem using IMS USB

i am facing some problems concerning to the communication laptop-TAC 50-04controller using the IMS USB.

My lap top have no D-Shell 9 pins and i tried a USB to serial converter and i made the follwing configuration in the "system config" menu:

on COMMUNICATION tab: LAN Router- None, Connect- Direct
on LON tab: "Connect-SLTA", "Mode-LTA Config".

I tried other settings , but without success.

Regards