Most of the standard is a derivative of a formal mature technology. The following introduces the serial communication the is commonly used in the industries. Most of them are fairly similar but are known as a different name.
Common Physical Communication Layer
- UART (0-5V, 0-3.3V)
- RS485, RS422
- LIN (for automotive single wire)
Other Physical Communication Layer
Protocol Layer on the common Physical Layer
Protocol layer is the data byte format design for a certain method of communicating. The protocol layer make use of the physical layer to send the data over a communication channel.
The following are some
- Modbus (uses RS485, RS232 or Ethernet)
- CAN bus (uses RS485)
- MDB, Multi Drop Bus protocol (uses 9 bits RS232/RS485)
- Multi-Master Bus
Other Protocol Layer