Telegyr 709

Developed by the Landis & Gyr company, the telecontrol protocol Telegyr 709 enables the coupling of control stations to Telegyr 709 substations.

There are two protocol variants:

• Telegyr 709
  which uses the proprietary PCM (Pulse Code Modulation) format to encode data as 60-bit words with a 16-bit checksum.
• Telegyr 709 USART
  which uses the asynchronous standard format with start bit, data bits, parity and stop bit for data encoding.