There is no order in the proper implantation of DMX. The controllers will respond to the channels that they are configured to work with regardless of where they are in the string. I'm not sure about the current Renard units, but the older ones did not use the proper implementation of DMX and even though they could read DMX, they still altered the data stream which is NOT what DMX devices are supposed to do so if you have any Renard devices in your string, make sure that they are at the end of it.