Thnaks for the reply, but as i meantioned earlier, the problem is not with the data to be sent or the format how to send it, in fact the problem is in electronic design and concepts that i lack which is how to block the power signal from my circuit, while allowing the communication signal toward the power line.
I've read about this and this requires a transformer (for isolation) and capacitors for coupling. I dont know how to design the transformer and what parameters required for the design procedure. a ready project has beeen read and found that the transofrmer used was simply a coil and a hand wound wire above it, but not mentioning the procedure. I appreciate any help in this domain
Thanks in advance