Command to turn heaters active/standby/off?

T3P3Tony

As it stands heaters that are associated with tools use the tool state for active/ standby (Tn = active for tool N, T-1 or select another tool for standby). DWC inerprets a heater that has both its active and standby temperatures set to the minimum as being "off", e.g.:

G10 P0 S-273.15 R-273.15 ; set tool 0 off

Bed heaters can use M144 to set to standby or back to active (set to -273 using M140 for off )

Chamber heaters can have a standby temperature set but at this point I cannot see any method to actually change a chamber heater into standby mode to use this temperature.

fcwilt

@T3P3Tony

Thanks.

So long story short - no such command yet exists to simply control the state.

Frederick.

T3P3Tony

It does not.

I am not sure there is a usecase for controlling the state of a heater on a tool, independently of the tool state.

T3P3Tony

update @Phaedrux pointed out this pull request from @gtj0

https://github.com/Duet3D/RepRapFirmware/pull/407

(edit) That appears to apply to bed and chamber heaters.

gtjoseph opened this pull request in Duet3D/RepRapFirmware

closed Enhance M140, M141 and T with heater state controls #407

fcwilt

@T3P3Tony said in Command to turn heaters active/standby/off?:

update @Phaedrux pointed out this pull request from @gtj0

https://github.com/Duet3D/RepRapFirmware/pull/407

Thanks again - but I don't know what a "pull request" is.

Frederick

T3P3Tony

@fcwilt a proposed code update on github

I was linking it here as it applied to your original request

fcwilt

@T3P3Tony

Got it - thanks.

And I am currently doing as suggested G10 P0 S-999 R-999 which is a bit non-intuitive but it works.

Frederick

T3P3Tony

@fcwilt may I ask why you need to turn off (as opposed to set to zero) tools?

fcwilt

@T3P3Tony said in Command to turn heaters active/standby/off?:

@fcwilt may I ask why you need to turn off (as opposed to set to zero) tools?

It's just the way my mind works.

In my home I can set the mode (off, heat, cool, auto) of the thermostats independently of the heat/cool set points.

Sort of, vaguely, in a round about way, kind of the same thing.

Frederick

gtj0

Finally, someone other than me that thinks having the ability to control heater states independent of tools or temperature is a good thing.

I've brought this up several times over the past few years but it never goes anywhere or the response is "Let's talk about it with the next release". I guess it's time for me to start pushing it again.

My examples were to do preheating of tools before use, ease of toggling bed and chamber heaters without mucking with the temps, being able to testing and tune during printer construction, etc.

fcwilt

@gtj0 said in Command to turn heaters active/standby/off?:

Finally, someone other than me that thinks having the ability to control heater states independent of tools or temperature is a good thing.

Well to me it makes perfect sense since they are independent properties.

As it is, as shown, I have to set both temps to a large negative number before the heater will turn off.

Frederick

gtj0

@fcwilt Exactly.

I'll make another run at @dc42 with my latest patch that adds that capability.

engikeneer

@gtj0 I'd vote for this too!

It may be more of a DWC thing, but I run a chimera. If I set a print going using only one nozzle, I'd still like to be able to manually set the unused too standby in some cases (e.g. because I notice it's hitting the print), when it would usually just be off. I've not yet found a way to put a tool into standby without affecting the active tool (which is not ideal if that tool is printing!)

Another use case I can think of would be manually changing filaments in a docked tool on a tool changer

dc42

@engikeneer said in Command to turn heaters active/standby/off?:

If I set a print going using only one nozzle, I'd still like to be able to manually set the unused too standby in some cases (e.g. because I notice it's hitting the print), when it would usually just be off. I've not yet found a way to put a tool into standby without affecting the active tool (which is not ideal if that tool is printing!)

We already have plans for this, which I originally hoped to include in 3.2 but we ran out of time, so it will be in 3.3.

I have added a comment th the PR from @gtj0.

A Former User

@fcwilt
@gtj0

Hi,
juast asking as an end-user:
As far as I understood your "pull-request", it could be that my usecase could already be implemented by your suggested changes, but: Since e.g. within M144 the letter "S" is used, would it make sense to use that also for your suggestions, I have seen "A" is proposed? Or to keep things consistent change M144 "S" also to "A" for state? Or is M144 on the long run going to be depracted?

all the best

zerspaner_gerd

@T3P3Tony said in Command to turn heaters active/standby/off?:

@fcwilt may I ask why you need to turn off (as opposed to set to zero) tools?

One use case that I would need it for would be a pause in printing.
Since you are not always on site I would like to switch off T0 and T1, but without changing or losing the set active and standby temperature.
So that when you continue printing, the correct temperatures are available without having to make this setting.

kenny_mc_cormick

@dc42

hey, sorry if i'm creating a double, but does the feature been added ?
i've checked changelogs and Gcode dictionary, but i havn't find the answer.
If it's added what's M or G code it is ?

Phaedrux

@kenny_mc_cormick https://duet3d.dozuki.com/Wiki/Gcode#Section_M568_Set_Tool_Settings

dc42

@kenny_mc_cormick it's added in 3.3RC2 which is soon to be released.

kenny_mc_cormick

@dc42 awsome !! can't wait to have it !
you guys doing such a good job !

edit:
@Phaedrux i check that. I guess it's "M568 P2 A1 ; set tool 2 heaters to their standby temperatures" to use, but does it set the tool on standby or does it just turn the heating on ?