Hello ,

I write here because hopefully someone  may help me .

I am trying to read data from raspbery pi3 with a s7-319 . If any device connect to pi3 over Bluetooth, I want to read the Bluetooth MAC address of that device connected to my pi3   with my CPU  (s7-319)

If anyone has any idea how to do that  is welcomed . Thanks.

Hello,
The raspery could take initiative (it knows when a device connects with bleutooth).
Let the raspery send the information with a UDP datagram towards the CPU300 on a given UDP port.
In the CPU300 you can listen on that UDP port for every message sent by the raspery.

This is achieved using TCON and TURCV.
See the FAQ.

How do you program the communication blocks FB67 "TUSEND", FB68 "TURCV", FB65 "TCON" and FB66 "TDISCON" in order to use the UDP protocol for data exchange via the integrated PROFINET interface of an S7-300/S7-400 CPU?

Simple, but UDP works connectionless. Means that the raspery is not sure if the CPU300 got the info.
If it is important to know, you could foresee a TUSEND that sends the info back as acknowledgment.

New question published by Spkumar is split to a separate thread with the subject communicate between two S7-314 CPUs through CP343-1 via ethernet over S7 connection using GET n PUT blocks.

Best regards
CS Moderator