My particular issue is that numerous devices I try to use with the quatech end up disconnecting from CQC, usually as a result of no response from the device I had connected. Soo...it seems like messages just sometimes don't get sent to the device connected to the quatech...or the response is never received.
Among devices that I've had issues with were:
1) Datanab Ai-32
2) OnQ ALC Lighting controller
3) RCS TR-15 HVAC controller
4) Brultech 1240 Power monitor
And a few others I think.
As of 11/09, there were new drivers for the box. As far as I know, I installed those (it was through windows update)...and at first I hoped it had gotten better, but later that night it was just as bad as always....lots of disconnects, and at some point the Datanab just stops responding altogether.
Michael McSharry suggested in the other thread:
This thread is too long to read to know if this has been discussed on not, but I have two suggestions. One is to use the Lantronix rather than the Quatech COM emulation drivers and operate in RAW mode. The second is for the application software to talk directly via IP rather than going through Windows drivers. This direct connection will allow you to manage the connection in a more robust manner based upon the characteritics observed.
Now I just have to figure out where the lantronix drivers are, and who to connected via IP!