Duet Wifi 1.02 Auto Heating Question

ABeardedItalian

Hello all, I have a question about the Auto Heating function.

Board: Duet 2 WiFi (2WiFi) v1.02
Firmware: RepRapFirmware for Duet 2 WiFi/Ethernet 3.3 (2021-06-15)
Duet WiFi Server Version: 1.26

I'm not sure if it's DWC or the some firmware setting but when I Pick from the drop down, or enter a temp and hit Enter my bed will begin to heat up on it's own. If I pick a temp for my extruder, or enter one manually it remains off, I have to click on the extruder to activate the heater. Is this a safety feature, bad config.g, or a bug? I would like my extruder to also begin heating up after selecting or entering a temperature manually.

Thank you.

engikeneer

@abeardeditalian Add 'T0' to the end of your config.g file to make your extruder active from the start

ABeardedItalian

@engikeneer

Thank you good sir, that rectified my problem.

uneumann36

@engikeneer said in Duet Wifi 1.02 Auto Heating Question:

T0

Hi
Thanks for this good advise. I was also searching for this since long time.
But this command is not 100 percent what i want to have.

Because, when i start printer bed heater and hotend are off.
When i use a temperature for the bed , then it turns to on.

When i use T0 and start printer , the Hotend is automaticly on.
Not switch on when i use a temperature.

Is it possible to do it like the bed heater?

ABeardedItalian

@uneumann36
Don't quote me but I took it as: The bed is On or Off, pid or bang bang aside the bed is on or off. While the tool, could be any tool and the wording Active is the right choice as it's the Active tool. Know clue, just what I put together from looking at things.

engikeneer

@abeardeditalian Yes that's right. If you have a printer with more than one tool (I have a chimera hotend, so two tools), it makes a bit more sense. They can be in four conditions:

Fault, ie the firmware has tripped a fault)
Off, so won't be used/heating
Active, so the heater can be controlled, and plastic can be extruded
Standby, so the heater can still be controlled (to a different temperature to Active), but the default extrude commands will go to the Active tool

@uneumann36 I believe RRF treats bed heaters differently to extruder heaters (because you don't need to have Active vs Standby bed states) like you do for multiple tools. My guess is there is something behind the scenes in how DWC interfaces with the firmware to send the commands, but the effect is the same. If you type a temperature and hit enter for either the bed or Active tool, it will start heating. If you don't want the tool to do that, take T0 out of your config and set it to Active manually each time.
If I'm not wrong you can also send T-1 to deselect all tools (there's a section on it in the gcode wiki, but I can't find it right now)

uneumann36

@engikeneer
Thank you very much for your information.
Good zo know that this is an safety feature and do not work like activate bed heater.