The RS485, 422 Shield provides a fully isolated interface.
It comes with its own UART and is connected by SPI.
The UART can be operated on both the Raspberry Pi (/ dev/ttySC0) and the Arduino Controller (via Library). This is set via jumper.
On the screw terminals the signals A, B and X, Y are carried out.
- Own UART driven by Arduino Controller or Raspberry Pi
- RS485 – half Duplex
- RS422 – full Duplex
- Fully isolated Interface
- Termination configurable
- Manuel Transmitter Enable
- Automatically Transmitter Enable
RS485 / 422 Lines are connected to the Skew Terminal