Hi Boiler, Thx for everything, I am now through with all my tests and everything is understood. I use direct dims (extcode31) and format 2 groups flawlessly. I also managed to get assistance with people at Girder to upgrade the CM15 plugin in order to support ext commands directly.
However, I am still puzzled at format 2...
even if I understand and have tested it successfully, I can't imagine a scenario where this would be useful.
Since units can't be part of more than one set of 4 groups, you still have the same limitations as format 3, which is 4 "scenes" per unit.
What's the use of having 16 sets if they can't be shared?
Logically, this means that in order to actually use all 16 sets for one housecode (16 unit codes), you could only use one unit code per set?
Do you have any real life example where this would make sense?
PS: I have tested a lot of newer modules, so far every dimmable module accepts extended commands (lamp modules, wall switches, etc)
However, the XPDI3 (inductive dimmer) doesn't seem to work ( I have ordered a new one just in case mine was a pre 2007 unit)
XPS3 (20amp appliance wall switch) works (off with 00, On with 3F or any non Zero value)
unfortunately other appliance modules doesn't seem to work (AM486, XPFM, etc)
I am trying to find older AM14a modules to replace my AM486 (I believe they support Ext command but are discontinued)
BTW, maybe you are already aware, but I believe the small round sticker behind units reveals the production date based on the following format: First digits: 7=1997, 9=1999, 07=2007, 0=2009, etc.
Also, for people complaining about the weak range of CM15a:
No need to buy the w800 or RFXcom receiver; just build the following antenna:
http://www.cocoontech.com/forums/index.php?showtopic=126 add a generic VHF/UHF/FM 20db signal amplifier
convert either a CM19a or CM15a (best) to coax:
http://www.shed.com/tutor/mr26ant.html http://www.shed.com/tutor/CM15mods/CM15mods.html install the antenna in your attic and voila! 200+ feet of indoors/outdoors receiving range.
Best wishes for 2010,