PT100 Daughterboard Duet 3
Seems either I can't read or am terminally dumb but copying the examples from the documentation isn't working on my Duet 3.
M308 S2 P"3.spi.cs0" Y" rtd-max31865"
Results in an error
Error: Response Timeout: CAN Addr 3, req type 6011
This is preceded by a "Timeout while: waiting for transfer ready pin"
Is this related to the use of a RPi - because it uses SPI also I think - what determines SPI addresses.
@Garfield How is the PT100 connected? I don't think you need the '3.' on the front of the P parameter. That would be for the 3rd expansion board. Assuming it's on the Duet 3, RRF config tool gives:
; Heaters M308 S0 P"spi.cs0" Y"rtd-max31865" ; configure sensor 0 as thermocouple via CS pin spi.cs0 M950 H0 C"out1" T0 ; create bed heater output on out1 and map it to sensor 0 M143 H0 S120 ; set temperature limit for heater 0 to 120C M307 H0 B1 S1.00 ; enable bang-bang mode for the bed heater and set PWM limit M140 H0 ; map heated bed to heater 0 M308 S1 P"spi.cs1" Y"rtd-max31865" ; configure sensor 1 as thermocouple via CS pin spi.cs1 M950 H1 C"out2" T1 ; create nozzle heater output on out2 and map it to sensor 1 M143 H1 S280 ; set temperature limit for heater 1 to 280C M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit
Throws no error .... but if I don't apply the sensor to the extruder or bed they aren't visible ... I shouldn't need to allocate them to anything to see values from them ... I can see my Pinda temperature sensor just fine as an 'extra' ....
@Garfield, which board is the PT100 daughter board mounted on?
@dc42 Direct on the Duet 3 using the little nylon standoff. Currently have a resistor and a PT100 connected just for testing. I can see no values from them in the web portal unless I map them to heaters. I was hoping that they would show up as extras whilst testing but it seems not.
M308 S2 P"spi.cs0" Y"rtd-max31865" A"PT100"
Sending something similar on my Duet Wifi (
M308 S2 P"spi.cs1" Y"rtd-max31865" A"PT100"in my case) gives this:
I also get "Error: Failed to initialise RTD: bad response from sensor" in the console when I send the command, but then I don't have a PT100 daughterboard connected!
Well I'll be - they appeared - never even gave that a thought although I'd named the Pinda sensor so it was there - it never occured that the name was the trigger to get it displayed.
Learning something every day ...
@Garfield You're welcome!