How to read PROFINET values

Hello everyone! I was researching how to establish PN communication with a simatic IOT2040 device, I found that in this topic: https://support.industry.siemens.com/forum/in/en/posts/profinet-integrated-with-node-red/238044/?page=0&pageSize=10

bergmanu

You can store the PN values in a file and read this file continuously in node-red.

there is mention of the possibility of storing a PN value in a file.But before saving this value to a file, I wouldn't know what command or program to use to get this value, (im using the X2P1LAN port for PROFINET communication).

any help?

I forgot to mention that I'm running the RT image and the PN driver.

Now I'm trying to read the values directly with the iot because I installed the node-red plugin from root@IOT, but I can't figure out if whatever I've done is okay or not, because it only reads "false" values.(note that i put the .xml file in the configuration node)

So the possibilities were that the node-red project is misconfigured or the Profinet device is not actually sending values to the iot.

Do you know if there is any documentation or explanation about this plugin? (because, for example, I don't really understand what I'm supposed to insert into the campus "topic")

Best Regards and thanks for the help!