pt100 daughter boards

[A Former User]

i have connected the first thermistor on 2 and 3 connector, the jumpers on 1and2 and the other on 3 and 4 the other connector i ad the 2nd thermistor on 6and 7 the jumpers on 5 and 6 and the jumpers and jumpers on 7-8 . the first thermistor works fine ad in config.g m305 P1 X200 ,and the second m305 P2 x201 and in config reprap i choose cs1 pt100 and for cs2 for the second thermistor, problem is that i get only correct temperature of the first heater, and the second stays on 2000 then i change the value it is the second good temperatur and the first not good . please help ?

[dc42]

@laurensschattenkerk said in pt100 daughter boards:

then i change the value it is the second good temperatur and the first not good

What value do you change?

[A Former User]

i change m305 p1 x200 and m305 p2 x201
into m305 p1 x201 and m305 P2 x200 then the second heater is oke but the first is reading false

[dc42]

We supply a 100 ohm resistor with the PT100 daughter board. If you connect that to pins 5 and 6 instead of the second PT100, what reading do you get for the second heater?

[A Former User]

@dc42 0degrees

[dc42]

@laurensschattenkerk said in pt100 daughter boards:

@dc42 0degrees

Then that channel is working. Your PT100 sensor or the wiring to it must be faulty. Is it definitely a PT100, not a thermistor?