Mac250 and Mac250+ fixture profile, gobo problems

Dear ETC and EOS Family Team,

Yesterday I was in a venue with Mac250 and MAc250+ units (not Entour or Krypton). I had some problems with gobo control.

On the Mac250+, I was able to rotate the gobos continuously, but only in clockwise direction. On the Mac250 (classic / non Plus), I was completely unable to rotate the gobos continuously.

I checked the fixture profile, and for both of them, it appears the profile doesn't match Martin's definition.


and page 22

EOS definition of the Mac250 (non plus) for DMX byte 5: DMX-value 0-255, user value -100 to +100. no subsections.
EOS definition of the Mac250+ for DMX byte 5: DMX-value 0-255. "Index" when Gobo wheel mode is Index, "Rot" when Gobo Wheel Mode is Rot, Rot Scan +, Spin + Rot, Spin - Rot

Martin's information for byte five (both Plus and classic): 0-2 no rotation, 3-127 CW rotation, 128-252 CCW rotation.

This (and other) information certainly doesn't align, and probably explains the problems I was seeing.

If I had regular access to such fixtures, I would attempt to adapt the fixture profile to make it work. However, I don't have access to any, so that probably isn't much of an option.

Kindest regards,


  • Hi Daniel,

        The Eos profile is using the virtual parameter called "gobo wheel mode" to define whether or not DMX ch 4 is in a "standard" gobo type or an "indexed" gobo type. The mode of DMX ch 4 will affect the mode of DMX ch 5, where 0-255/0-100 range is applicable to indexed gobos and the rotation ranges (i.e. 0-1 no rotation) is applicable to standard gobos. 

          While this may explain the differences in appearance between the Eos profile and the manual's DMX chart, I believe the function Gobo Spin + and Spin - function may be broken in Eos, as selecting these options on Gobo Select will cause all gobo selections to disappear. I will inquire with the Eos team on the functionality of DMX ch 4 and ch 5 of these profiles to verify how it should work in the software.



  • uhm, not commenting on this specific issue, but since spin means the whole gobo wheel is turning there is no specific gobo to choose...

Reply Children