I haven't use the 80V version of the VL500. This version has the external dimmer, right? Does the dimmer get addressed separately from the luminaire, or do you only need to set the address on the fixture itself?
I've been looking into this and I may have tracked down a library problem that could explain what you're seeing if you're using the VL500T library.
I'm still digging around to see exactly what's going on. I'll certainly let you know what I find and get a corrected library if we need to, but could you try using the VL500A profile and let me know how that works for you?
