How to connect PT100 in module AM2 RTD?

Flavio Lucio

No answer my friend? Also I need to know how to connect PT100 in module AM2 RTD and also if you use AI as "in" for PT100. Do you solve this information? Thanks for support

For wiring see the attached PDF.

For addressing: 

Normally in the LOGO! base modul are the adressess AI1 and AI2 reserved for the base modul. If you don't need AI's on the base module or the base module has no AI's then you can select the default setting to no AI's on the base module.

File > Properties > Offline Settings > I/0 Settings. Or over the menu of the LOGO! directly.

If no AI's reserved for base modul and the AM2 RTD is the first analog extended modul, then the addresses AI1 and AI2.

If 2 AI's reserved for base modul and the AM2 RTD is the first analog extended modul, then the addresses AI3 and AI4.

If 4 AI's reserved for base modul and the AM2 RTD is the first analog extended modul, then the addresses AI5 and AI6.

Have you make a bridge zwischen U1- und IC1? This is needed by 2wire PT's.

Is the AM2 RTD the only analog expansion modul?

What color is the RUN/STOP LED on the AM2 RTD? Red or green?

Run LSC.

Then select Tools > Transfer > I/O Status.

Then opens a window with a table of thes states and values of the I/O.

See attachment. This shows this table.

You can see, I have actually values on AI1 and AI2. This are analog inputs on my basemodul. I selected only AI's.

Make the same and also a screenshot and show us the screenshot.

There are no values in the LOGO!.
So something is wrong with the hardware.

Are you sure it's a PT100?

Do you have the option to connect a fixed resistor with a value of 120 Ohm to the module instead of the sensor? This corresponds to a temperature value of ~ 50 ° C. The bridge from U1 to IC1 must then remain.