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KNX Transceiver Components
1. Physical Layer Interface
  • Twisted pair interface (TP1-256)
  • Line coupling unit
  • EMI protection circuits
  • DC/DC converter for bus power
2. Digital Processing Unit
  • Microcontroller for protocol handling
  • Memory for storing device parameters
  • Address recognition logic
  • Frame formatting and error checking
Working Process
1
Signal Reception: Receives differential signals from KNX bus (29V DC with superimposed data)
2
Signal Conditioning: Filters and amplifies the received signals, separates data from power
3
Digital Processing: Converts analog signals to digital, processes telegrams according to KNX protocol
4
Transmission: Converts digital data to KNX-compliant signals for bus communication
Technical Specifications
Data Rate: 9600 bits/s
Bus Voltage: 29V DC (nominal)
Communication: Symmetrical data transmission
Topology: Free, line, star, or tree