Control of Keenovo heat bed.

[A Former User]

@jens55 said in Control of Keenovo heat bed.:

Are you running 2 or 3 ?

RFF3 on Duet 3, just don't recall reading it changed, or mentioned in the upgrade notes and its potentially a bit of a big deal. Will fire up the Maestro and see if there is a difference between RRF2 and RFF3 when i get a chance.

[Garfield]

Bearer - do you have an M308 line defining the sensor before the M950 line ?

That said the gcode documentation for M950 states

T Temperature sensor number, required only when creating a heater [not yet implemented]. See M308.

The online generation tool adds the sensor to the M950 line - perhaps the Tx serves no purpose but then how do you assign a sensor to the heater ???

[dc42]

RRF2 and RRF3 on Duet 2 assume that heater 0 is the bed heater until you tell it otherwise using M141. RRF3 on Duet 3 doesn't have a default bed heater. The best option when using RRF3 with a SSR is to specify the frequency explicitly in the M950 command that creates that heater.

[A Former User]

@Garfield said in Control of Keenovo heat bed.:

Bearer - do you have an M308 line defining the sensor before the M950 line ?

to be honest i don't have a heather nor a sensor, the board is on a cnc router

[A Former User]

@dc42 said in Control of Keenovo heat bed.:

The best option when using RRF3 with a SSR is to specify the frequency explicitly in the M950 command that creates that heater.

That could probably have been made clearer somewhere, but makes sense as you move away from predefined roles for pins. Thanks for clearing that up!

[Garfield]

@dc42 said in Control of Keenovo heat bed.:

M950 command that creates that heater

So is the gcode documentation in error - is the T statement implemented now ?

[dc42]

Yes, it's been implemented for a long time.

[Garfield]

No worries - needs updating in the documentation.

[dc42]

@droftarts, please fix this, also check whether the RRF3 wiki page has the same error. I'm on a smartphone, otherwise I'd do it myself.

[Garfield]

It's OK on reprap.org

On this page it says not yet implemented

https://duet3d.dozuki.com/Wiki/Gcode#Section_M950_Create_heater_fan_or_GPIO_servo_pin

[droftarts]

@dc42 Updated Gcode page, removed "not yet implemented". https://duet3d.dozuki.com/Wiki/Gcode?revisionid=HEAD#Section_M950_Create_heater_fan_or_GPIO_servo_pin
RRF3 wiki page was correct already. https://duet3d.dozuki.com/Wiki/RepRapFirmware_3_overview#Section_M950_Create_heater_fan_or_GPIO_servo_port

Ian