I've been trying to comunicate from max to dmx usb pro (ENTTEC) interface... And I found the way!
No need of any external on win7 with FTDI drivers : just using the serial object works fine.
(see attached file)
My problem is how to talk to OPEN DMX using the same way?
ENTTEC gives the following answser : "You typically just open a com port in your program and send it the data. What data? Well, that's not up to us, that's what DMX512 requires."
thanks, that helps... do it yourself... I've been googling wihtout results.
Any help about open dmx could really be fine.