One problem if I recall correctly is that ETCNet1 does not do
DMX. I do believe that ETCNet1 only provides device
feedback to the
console for things like AF dimmers where it can report
dimmer load and things of that nature. It still requires a direct
DMX line to actually control the dimmers themselves. Therefore ETCNet1 on the
express would basically be useless in this situation.
DMX over ethernet was not introduced until ETCNet2 I do believe (Someone please correct me if I am wrong.)