Hi, I’m trying to set the baud rate of the Serial object at a value greater than his maximal value (should run at 250Kb rate) to make it communicate to a FTDI usb serial interface mounting a RS485 chip, for DMX data sending from Max.
The interface is perfectly running with other DMX softwares (see Madrix http://www.madrix.com/), and that from a Sony Vaio i7 with 8 Mb Ram – 2 GHz.
Also the FTDI driver is perfectly installed and running, with the last drivers version (184.108.40.206).
From Max nothing works, in VCP mode or not, the maximum baud rate is 115200b, and I get flashing data only at 57600baud, but that it’s not correct for DMX data transmission. Any idea about that? Thanks in advance.
P.S. The interfaces name is FTDI ENTTEC DMX USB (#A101L8D0) ms/FPS 30/33.3 Optimized Frames
For what its worth, here at Sensacell we’ve been using a USB-RS485 adapter with the serial object set to 230400 baud for years without any issues, so the maximum baud rate should not be an issue. Our standard adapter is the ATC820, which also has the FTDI chipset.
I have a test setup where I plugin two adapters to my laptop and push serial data out of my Max patcher on one and read the data in on the other using the free app Bray’s Terminal (https://sites.google.com/site/terminalbpp/).
This may be helpful to you for testing vanilla serial transmission using the serial object. DMX on the wire is just uni-directional rs485, right? I thought that it ran at 230400 baud also…