execute_if_off ??

[agsola]

I'm trying to understand who to use execute_if_off.
I can't find in any device, I can't find in the configuration.

However, I've seen in different issues like:
Koenkk/zigbee-herdsman-converters#2284
Koenkk/zigbee-herdsman-converters#4192
nurikk/zigbee2mqtt-frontend#356

I have some LED drivers and IKEA Tradfri bulbs.
In the LED when I change the light temperature while the device is turned off, when turning on the temperature is changed.
However, in the Tradfri bulbs, when I change the temperature while the bulbs are off, when turning on the don't change, and they keep the last temperature value.
However, none of them expose the "execute_if_off".

[sjorge]

You are correct that some level and color options are not in the expose data (anymore).

If a bulb supports it or not is a mixed bag, Trådfri bulbs on the ZB3 firmware and Hue (With BT) seem to support it though, there is also still a weird rendering issue with expose things with subkeys in the frontend is still a problem too.

Currently for color_options only the execute_if_off bit has support, although this could be expanded to do some of the color_temp linking to brightness options in the future, I never got them to work so I didn't have anything to test with so they are currently not implemented.

There is no separate level_options, the execute_if_off for that got implemented under level_config which sets a lot of other things too.

I'm not sure which is the better approach tbh, level_config has a bunch of stuff as subkeys, include execute_if_off which get written to the options attribute, it would get complicated if other options bit-fields ever get implemented, less so for color_options as this is a separate property. But that does mean things like the color_temp_startup are separate properties also instead of all living under a color_config property as sub keys.

History aside, you can configure it like this:

mosquitto_pub -t zigbee2mqtt/<friendly_name>/set/color_options -m '{"execute_if_off": true}'
mosquitto_pub -t zigbee2mqtt/<friendly_name>/set/level_config -m '{"execute_if_off": true}'

When enabled (and if the bulb supports it) you can now change the color_temp, color, brightness without the bulb being on or turning on when doing so.

[agsola]

Thank you so much @sjorge !!
execute_if_off works great for color temperature, however, with brightness options I can't get it to work.

I had two different brands, Tradfri bulbs and Iluminize LED drivers. Iluminize by default were able to execute_if_off, now all my devices are able to execute if off.

Regarding the brigthness, I've tried first to send the commands of color_options and level_config.
After that, I've tried with some commands like:

mosquitto_pub -t zigbee2mqtt/<friendly_name>/set -m '{"brightness":15}'
mosquitto_pub -t zigbee2mqtt/<friendly_name>/set -m '{"level_config":{"execute_if_off":true},"brightness":15}'
mosquitto_pub -t zigbee2mqtt/<friendly_name>/set -m '{"level_config":{"execute_if_off":true},"brightness":15, "state":"OFF"}'

But none of them worked. All of them turn the light on except for the last one that only turned off the light, ignoring the brightness. So I find no option to change the brightness while keeping the light off. Any idea of how to do it?

[sjorge]

Interesting, I have the same result... I did some more poking around the spec

I think we're hitting this in the longer list of conditions: The On/Off cluster exists on the same endpoint as this cluster.

All the bulbs I have have an genOnOff cluster on the same endpoint as the genLevelCtrl.

cc: @Koenkk as your a bit better than me at deciphering the vagueness/contraditions of the ZCL at times.

[agsola]

It makes sense. According to the specs, this shouldn't work right now.
Could it make sense to use a separate cluster to change color brightness with no "On/Off cluster"?

[JeanneD4RK]

What I understand in the doc is that the command shloud continue since all of the critera are not met, because the last one is about ExecuteIfOff but is not 0.

This issue is still present as of today.

[thegcat]

Has anyone found a solution to change the brightness of Tradfri (or Kajplats) bulbs while off?

[Nama]

so whats the workaround?
check the group state, if on, loop thru all devices and check which is on and send the command only to that device?
doesnt seem feasible...

[andrei-lazarov]

Go to device -> dev console -> read / write attributes

• cluster genLevelCtrl -> attribute options -> 1 = allow changing brightness while off, 0 = don't allow
• cluster lightingColorCtrl -> attribute options -> 1 = allow changing color/temp while off, 0 = don't allow

These options are also exposed as execute_if_off in the UI for some devices (e.g. IKEA bulbs).

Then send MQTT to friendly_name/set with payload:

• {"brightness": 254} - turn on/off and change brightness (max 254)
• {"brightness": 254, "state": null} - don't turn on/off, only change brightness (works only when execute_if_off is enabled)

Note that not all devices support this / handle this well.
Also my IKEA bulbs seem to forget the option after a while 😭?? I need to set it again, every 2 weeks or so

[agsola]

On my old IKEA bulbs, on all of them, it was working for me before for colour, it is not working anymore, despite having the execute_if_off on both for colour and brightness.

However, I have a new one that replaced a broken one, and it works just fine.

Any idea?

[andrei-lazarov]

Disable execute_if_off and enable it again

[agsola]

I've tried that, also sending the command to the device itself, to a group that the device belongs, etc. Nothing works. But everthing worked before.

[Nama]

oh my god, i was missing "state": null.
thank you very much!!

[agsola]

On my old IKEA bulbs, on all of them, it was working for me before for colour, it is not working anymore, despite having the execute_if_off on both for colour and brightness.

However, I have a new one that replaced a broken one, and it works just fine.

Any idea?

[Nama]

no idea.
my bulbs are like five years old