I just installed Openlab Chemstation version C.01.07 sR4  in a Windows 7 computer. The IP address for the computer LAN card is 10.1.1.1.101 (SN = 255.255.255.0, GW = 10.1.1.1.100). I was able to configure:
6890 (IP = 10.1.1.105, SN = 255.255.255.0, GW = 10.1.1.1.100, Firmware Revision A.03.8, Software Version 6.37 )
6850 (IP = 10.1.1.104, SN = 255.255.255.0, GW = 10.1.1.1.100, Firmware Revision A.06.02, Software Version 6.37 )
Using CMD I can ping both instruments without a problem. I was able to configure them with Openlab Control panel, as the system shows the instrument information under the configuration tab, (Serial Number, Firmware revision, software version, type of detectors, injectors, etc), please see attachment. The problem is that when launching Chemstation, the instrument shows as NOT READY and the instrument actuals window indicates that the Instrument is OFFLINE, and it does not communicate (yes I'm clicking launch not launch offline). We doubled checked with our IS department and they assured me it is not Firewall related.