ENET-232/4 doesn't seem to work for some instruments

[Shimtest]

I have an ENET-232/4 and it works for some analog-digital interfaces I'm using but doesn't work for other instruments. I tried using a Shimadzu LC2010 with it, it configured OK, but the instrument wouldn't start a run. I tried a Thermo TraceGC and it wouldn't even configure through it. But simple A/D interfaces (PE Nelson boxes, SS420X, etc.) are working fine.
Are there limitations on the type of instrument that can be run through a ENET-232/4?

[Chris_Rake]

Odd - I'm not aware of any instruments that are incapable of communicating using an Enet-232/4. One problem I have seen however is that some applications are written with hard timeouts and thus don't not work with the latency introduced by a networked COM port. Are you manual configuring the devices or are you using an application/driver?

[Shimtest]

I'm using EZChrom Elite chromatography software to configure and run. So you think it might be a software problem?

[Chris_Rake]

Possibly - if the software is written with hard timings (like it writes a command, waits 10 ms for the reply, then writes a seconds command, etc.) then its going to run into problems communicating over a high latency communication link.

Sometimes these timings are adjustable - are there any options in the program for adjusting communication timeouts?

[Shimtest]

Nothing that I can adjust. But I will find out if that's what the software is doing. Thanks for the help!!