ON/OFF Scenes in Touch Screen

First off, a word of introduction; I've recently come on board as a Field Application Engineer with SquareD Lighting Control in LaVergne, TN (USA). (SquareD is owned by Schneider Electric and is the parent brand for Clipsal C-Bus in N. America) Our department of SquareD conducts Clipsal C-Bus training for contractors and integrators on Toolkit, PICED, MARPA, etc. We also do training on C-Bus integration with SquareD's widely used PowerLink system (remotely controled circuit breakers for commercial applications).

I've recently run into a question on how PICED handles scenes when the 'Key Function' is set to On/Off. I understand that if an Action Selector is associated to a Scene in an external device (say a Neo keypad) the Neo would be capable of setting a scene defined in PICED using the same Application/Trigger Group/Action Selector. However I'm finding if a scene is set to On/Off in a PICED device/touch screen, this does not trigger a corresponding scene at Trigger Control/Trigger Group xx/Action Selector 0 or 255. In fact, you don't even have to define an Action Selector if turning a scene On/Off with PICED.

It appears the On/Off function simply takes the level of the lighting groups in the scene to 255 (on) or 0 (off), but does nothing in Trigger Control Application. Is this correct?

The reason for the question; I've been working on a project for a large University using Clipsal relays with PowerLink for larger 277/30A loads. They're controlling most of the circuits with a Mark II touch screen, along with a handful of Neo and DLT keypads for area and corridor lighting. There are approximately 40 Clipsal group addresses being switched on/off in various combinations using their Mark II. They have multiple On/Off buttons on the touch screen, but don't want separate 'scene on' 'scene off' buttons for each various scenarios due to limited real estate on the Mark II. (i.e. 3 rows/6 sections of gymnasium flood lights with all on/all off, left side on/off, right side on/off, first row on/off, second row on/off, third row on/off, etc) The simplest way I've found to achieve this is to put the various groups into scenes in the touch screen and then use the on/off key function. Assuming I don't build any scenes in keypads using the same Trigger Group, is there any problem with handling ON/OFF 'scenes' in this manner?

-Duke

 

If you are using a Key Function other than "Scene" with a Scene, then the Scene Components are treated as a bunch of group addresses and the key function applies to those groups. The levels of the group addresses in the scene are ignored. See the help file topic "Adjusting Scenes".