Duet shows different temps

NOVAprint

This is a different presentation of a previous problem. I have an E3d Thermistor and this is my printer with a Semitec 104GT thermistors this is my configuration

M308 S1 P"e0temp" Y"thermistor" T1000 B4725 C7.06e-8 ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat and map it to sensor 1
M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit
M143 H1 S280 ; set temperature limit for heater 1 to 280C

I het a reading of -50.8 for the temp with low voltage and I get a heater fault -273 when I turn on the power switch. I am using a smart effector and am using the two middle plugs to get the temp for T0. I redid the wiring there are not likely any wiring issues, however it does seem that after I bumped the smart effector the temps started registering wonky, full dislosure. The run for the wiring is long too, I am not sure how much that matters it is about 1.5 meters.

droftarts

@NOVAprint said in Duet shows different temps:

M308 S1 P"e0temp" Y"thermistor" T1000 B4725 C7.06e-8 ; configure sensor 1 as thermistor on pin e0temp

T1000? Should be T100000.

Ian

NOVAprint

@droftarts
T100 worked on USB power ,my duet 2 is around five years old: how much of a factor is that?

Here is my config.g with the correct T value.

M308 S1 P"e0temp" Y"thermistor" T1000000 B4725 C7.06e-8 ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat and map it to sensor 1
M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit
M143 H1 S280 ; set temperature limit for heater 1 to 280C

My M115 FIRMWARE_NAME: RepRapFirmware for Duet 2 WiFi/Ethernet FIRMWARE_VERSION: 3.4.3 ELECTRONICS: Duet WiFi 1.02 or later FIRMWARE_DATE: 2022-10-05 09:01:07

dc42

@NOVAprint that's also wrong, you've used T1000000 instead of T100000 (one zero too many).