We need a lot more information. What is this Ethernet to Serial coverter? We need to see the logic. Is MSG instruction used, etc... etc..
When i troubleshoot serial devices I usually starts with Hyperterminal and see what data is going in/out of the serial device.
-Is command/info from SLC reaching the "converter"?
-Is the data coming out this "coverter"?
-Can you make the display work by connecting it to a PC with Hyperterminal?
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