DLT Backlight

Can the backlight on a DLT switch be turned on when a person enters a room, then turn off after a preset time?

Steve

 

Hi,

You can link the DLT Backlight brightness to a C-Bus group, so if you have a PIR in the room it can be done. Just set up the PIR to turn the group on when it senses movement and off after a timer, set backlight to follow the group and Robert's your father's brother.

Cheers,
Mark.

 

the only catch is that the indicator LED's also follow the GA for the backlight control, so if you have a GA on, and don't mind that it wont indicate when unattended (i know this sounds contrived, but i have had complaints in the past).

 

If I understand correctly, the status LED's won't be on when the room is vacant or no movement after set period. I don't think the spiders will mind....

Steve

 

just worth a mention

It would be nice if the backlight level and the indicator brightness were controlled from seperate GA's

 

I havn't yet played with a PIR or groups, but its next on the list.
Would also be nice if the LED's on the DIN modules could be turned off, stealth mode. Any comments are worth while.

Steve

 

Black insulation tape...

 

Maybe I'll retract that last comment.

Steve

 

My DLT backlight was working so nicely whenever i walked into a room. Then I had a reset of the whole network and it stopped working. Is it possible that the PIR is a PIA and not sending out the correct signals. It was a replacement for one that failed (most likely due to excessive moisture in bathroom). Would anyone like to refresh my memory on the PIR settings as I seem to have misplaced my method on how to trigger a DLT backlight for 1m with a PIR.

I put the DLT on 100% backlight and it worked fine. I set the backlight to the same as the status of a dummy load and it doesnt respond. So it appears I am overlooking something in the data settings.

 

BUMP ... anyone ?

 

Hi tobex
I haven't used DLT much but I'd try turn on the address for the backlight with something like diagnostic utility to narrow it down.
Then check the logs to see if the sensor is turning on the address.
Which sensor do you have?

 

It is a surface mount sensor. I think it might not be working correctly.

Is there any chance the DLT might not be taking messages properly ?

As I said, it used to work just fine. To get the network to scan I had to reset everything and since the network issue was fixed, I cant seem to return the function to the backlight.

 

Hi tobex
If you open the sensor for editing you can turn on and off the GA you have assigned to DLT backlight from there too.

 

The DLT brightness level does change and I can alter the backlight manually. Though I cant get the DLT to accept instructions from the network as to the status of the backlight, when it is group dependent.

I did all of the diagnostics and made the associated group cycle on and off.

 

Hi tobex
You could also set on the address for the backlight manually on the DLT config page.
If you are starting to think the DLT has a problem I think a reset of the unit would be worth a try.

 

I just checked to be certain and the DLT does not accept status settings from another group as you depicted. I will replace the DLT as it is not responding correctly.

The diagnostic mode does not give me any response either. It seems highly likely that the DLT is not accepting instructions from the network.

 

Hi tobex
Just remember I haven't used a DLT before.
Maybe someone else can confirm.
I would still do a reset on the DLT if it was my money.
Sensors used to be known for getting themselves into a weird state after programming changes and the DLT looks at least as complex.

 

Yes I did a reset as you suggested and uploaded the settings from the database to the DLT. No change. Luckily, I have a spare DLT laying around and have the opportunity to install it and see what it does.

 

Nice, that makes it a bit easier.
Just remember if you upload a config which isn't working doesn't prove the config is OK but you will soon find out if you have a unit to swap.