RTD - PT100 3 temperature issues

Which LOGO! have you exactly?

Use you a AM2 RTD?
Or an extern RTD converter?

You post the image to the wrong topic.

I think your problem is that you use the wrong AI address in your program.

I the file properties of your program are the first two AI addresses (AI1 and AI2) are reserved for the base module. This is the default setting.

Now you have two possibilities:
- Chance the default settings the from 2 AI to 0 AI enabled for the base module.
- Or chance in your program the AI addresses. From AI1 to AI3 and AI2 to AI4.