PT100 step 7 strang analog value

Dear engineers, the problem is solved...
The M12plug being used to connect the sensor with the analog card had an LED light which was using some mili amperes, which was read by the analog card... o_O
Cable replaced, now has M12 plug without LED, all readings are correct. Thanks all for the input!

Shooter, thanks for the offer. I checked the Oscat library, it looks very useful.
 
Last edited:
Good catch! The M12 plugs with LEDs only works with digital sensors.

So I'll guess we'll put this problem down as "not wired correctly".
 

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