Forums > MaxMSP

Enttec DMXUSB PRO serial communication issues, device closes

Apr 15 2013 | 3:31 pm

Hello all,

I am having issues with my Enttec DMXUSB PRO device. I am trying to send out a message to multiple lights at once (multiple channels that control the light intensity) but whenever I try to do this I get the following error:

imp.dmx.usbpro: Serial communication failed
imp.dmx.usbpro: Device closed

Adjusting each channel individually works just fine, however, these bigger messages cause a shutdown. I was wondering if any of you are familiar with this problem and know any solutions.

Attached are 2 files, 1 is the main receiver and enabler for the DMX device the other one contains sliders for a moving head. If you click the message underneath any of the MH texts multiple times, it’ll result in the same error as stated above.

-- Pasted Max Patch, click to expand. --

-- Pasted Max Patch, click to expand. --

I am guessing it has something to do with the write and read speed of both MAX and the DMX device. I’m not sure though and even if that is the case I still wouldn’t know how to fix this.

Best regards,

Apr 15 2013 | 5:04 pm

I’ll give this a test with my hardware later and see if I can reproduce the error.

Apr 15 2013 | 9:41 pm

Changed the "pak" to "pack" which already reduces some of the load.

Apr 16 2013 | 10:27 am

Another simple example, changing the first channel on lamp 1 (channel 11) and the same effect channel of lamp 2 (channel 26) results in the same serial communication error.

-- Pasted Max Patch, click to expand. --

Apr 18 2013 | 10:31 am

Changing the num_channels from 512 to 100 (not using any more at the moment, will be using more later) fixed the problem for now. Will update as soon as I find out more.

Viewing 5 posts - 1 through 5 (of 5 total)

Forums > MaxMSP