Chromatography Forum

Does anyone has any experience using DX LAN with ethernet adapters other than those supplied by Dionex? Is it supposed to work at all?

I have an older Dionex system (ED40, GP40) with coaxial DX LAN and I am trying to connect it to a newer PC running Chromeleon 6.8 SR11 on Win XP SP3. I did disable all protocols other than QoS as instructed.

I have tried a number of cards (and on-board port), AT, Intel, Broadcom, and others, some with BNC connector some connected through a combo hub. Of course I have 50 ohm cables, tees and terminators, also 50 ohm.

In all cases, server configuration tool does "see" the LAN card, but when I attempt to "bind" it it always "fails", after some time, presumably because it does not get response from instruments.

I looked at the network traffic using a sniffer, I can see broadcast message sent by server followed by responses from detector and the pump, so the hardware seems to be working. The card also seems to be doing its job.

Yet, the server seems to be ignoring the messages from all instruments, and does not "see" any of them.

Should I give up and buy some other data system? It seems that this one is a bit difficult to manage.

Hi, if you can "ping" the equipment from the Windows command line, then there is some incorrect setting in the Chromeleon LAN communication set up. Assigning IP addresss in the LAN instrument communication set up is the weakest point in Chromeleon. If "ping" works, contact a Dionex technician that guides you through the LAN set up. Hope it helps.

thank you for reply.

as I have mentioned, it is the older DX LAN. Not TCP/IP. Coaxial ethernet network with LAN protocol, not sure what protocol it is probably Dionex proprietary. There are no IP addresses and there is nothing to ping.