Temprature sensor error unknown temperature sensor channel

Phaedrux

What slicer are you using? Does it have the temp set for what you want?

You should add T0 to the end of your config.g so that the first tool is selected at startup. You should also add a T0 to your slicer start gcode just in case the tool gets deselected along the way.

Can you post a sample sliced gcode file so we can see what it's trying to do at the start of a print?

JTM

@Phaedrux Hi mate, i'm using Simplyfy3d so yeah i set my temps for my other machine all through S3D. Im not sure about the sliced gcode, but in the scripts tab the starting script is G28 ; home all axes

Ive also noticed my end script to lift the nozzle 50mm after print finishes doesn't work either?
M104 S0 ; turn off extruder
M140 S0 ; turn off bed
M84 ; disable motors
G91;
G1 Z50;
G92;

Phaedrux

@JTM said in Temprature sensor error unknown temperature sensor channel:

M84 ; disable motors
G91;
G1 Z50;
G92;

Well it disables the motors and then tries to move them so move the M84 to the end.

JTM

@Phaedrux thanks mate.
i tried adding the T0 line at the end of config and also in start script and still no go.
i get this error message.
Error: Temperature reading fault on heater 0: sensor open circuit
Resume state saved
Printing paused at X0.0 Y0.0 Z0.0

JTM

@Phaedrux could it be in the baude rate? my other printer runs rumba at 115200 baude rate the duet is different?

Phaedrux

Are you printing over USB or are you uploading the gcode to the duet using the web interface?

Do the heaters work otherwise?

Have you PID tuned your heaters?

JTM

@Phaedrux uploading the file through web interface.
The heater can be set manually and work fine and i have PID tuned them. I upload a gcode file then click start print and i get this error message,
Warning: Tool 0 was not driven because its heater temperatures were not high enough or it has a heater fault

the printer will continue trying to print without heating the extruder so i just stop it. if i heat the hotend first then start a print it will print as i'm manually overriding the temp settings.
i think?

Phaedrux

Upload a sample sliced gcode file please.

JTM

@Phaedrux i'm not sure how to do that?

JTM

@Phaedrux its a huge file to cut and paste?

JTM

@Phaedrux i assume you only need the start file?
G90
M82
M106 S0
M140 S110
M190 S110
M104 S285 T0
M109 S285 T0
G28 ; home all axes
T0
; process Process1-1
; layer 1, Z = 0.225
T0
G92 E0.0000
G1 E-8.0000 F5502
; feature skirt
; tool H0.225 W1.500
G1 Z0.225 F1500
G1 X41.799 Y46.303 F3900
G1 E0.8000 F5502
G92 E0.0000
G1 X42.105 Y46.033 E0.0601 F2640

JTM

@Phaedrux this is the last code:
; layer end
M104 S0 ; turn off extruder
M140 S0 ; turn off bed
G91;
G1 Z50;
G92;
M84 ; disable motors

Phaedrux

I think this is an issue with simplify 3d targeting the right heaters.

Try this, go to stay folder and create a new file called start.g inside it put T0 and save it.

JTM

@Phaedrux In my config file?

Phaedrux

Well you should have a T0 at the end of your config file as well.

But I mean creating a new file in the sys folder called start.g with T0 in it as well.

Start.g gets run when you start a print.

JTM

@Phaedrux Thanks so much mate, ill try it out

Phaedrux

@JTM said in Temprature sensor error unknown temperature sensor channel:

M104 S285 T0
M109 S285 T0

I would suggest editing your slicer start gcode to remove the T0 from the end of those commands. And put a T0 at the very start of your slicer start gcode.

JTM

@Phaedrux I have tried changing the T0 around and no difference really. I keep getting a M140 error which is the heated bed which i don't have connected. I would start a print and ill get these errors which i close and resume print as its been paused automatically due to a heater fault. if i start the print it will run for 600 seconds and stop. the strange thing is once that occurs as long as i dont switch off the printer or reboot the board i can send a file to print and it does without a problem. Maybe i need to disable the heated bed?

Phaedrux

@JTM said in Temprature sensor error unknown temperature sensor channel:

I keep getting a M140 error which is the heated bed which i don't have connected.

Ok, so you don't have your heated bed connected? Well that would certainly cause an error since it will try to heat it, see that the temperature isn't rising, and through a heater fault.

If you don't have it connected remove the commands to heat it.

JTM

so delete the M140 command?