DMX Address Translator using two UARTS

[Lesateq]

For not having programmed for 25 years my C is a bit rusty... I read about using two UARTS with the DMXSerial library but I have a question. I want to develop a DMX address translator. I need two DMX ports. The first port I will use to read DMX commands from a DMX controller. I want to change the device address and send the DMX commands to the second port. To this port fixtures will be attached. The reason for this idea is that cheap DMX controllers use a range of fixed DMX addresses. However, in a complex environment, like the theater I work for, I need to securely determin the addresses. The fixed addressed of the mentioned controller can cause conflicts. Can I use an Arduino board with two UARTS to do so?