Are the ML1100's also doing messaging?
Is there a limit to the no of Ports/connections that the ML1400 can support?
Does the DASABCIP driver use the same port that RSLinx does, or that the messaging does?
I have had a situation before, with another PLC brand when using the DAS server, that I could not get online from the same PC. Not the same problem, but possibly a similar scenario.