1.1 Electrical Requirements - turag-ev/TURAG-Feldbus GitHub Wiki
The TURAG-Feldbus bus uses the RS485 standard for data transmission, which allows the construction of a differential bus.
The signal coding is based on the possibilities of UART:
- The data transfer takes place in frames.
- A frame consists of a start bit, 8 data bits and a stop bit.
- One start bit equals 0,
- a stop bit logical 1,
- as well as the idle state on the bus.
- The length of a bit is determined by the baud rate set for all bus subscribers. The baud rate can vary from bus to bus, but is the same for all participants on a bus.
- All bus subscribers must release the bus immediately after sending a packet.