Product description
Some RS485 shields are already available for the Raspberry Pi on the market, but these extensions are not suitable for professional use, because they come without a galvanic isolation between the RS485 bus and the Raspberry Pi. Without such isolation a damaging of the Raspberry Pi or malfunction of the device is possible, because of the large distances of a RS485 bus. Furthermore a full-duplex mode (RS422) is also not integrated.
Features:
* RS485 mode (half duplex)
* RS422 mode (full duplex)
* galvanic isolation between Raspberry Pi and RS485 bus
* enhanced ESD protection
* adjustable automatic transceiver switching for RS485 mode
* adjustable control of transceiver/receiver via GPIO pin
* adjustable Pull-Up, Pull-Down und terminating resistors
* indicator LEDs for RX and TX * removable block terminal for bus connection
* many options adjustable via DIP switches
The RS485 is in use in many applications like
* industrial and home automation (for example MODBUS)
* lighting control (DMX)
* maritime and navigation controls (NMEA0183)
* video surveillance (for example Pelco D)
Features:
* RS485 mode (half duplex)
* RS422 mode (full duplex)
* galvanic isolation between Raspberry Pi and RS485 bus
* enhanced ESD protection
* adjustable automatic transceiver switching for RS485 mode
* adjustable control of transceiver/receiver via GPIO pin
* adjustable Pull-Up, Pull-Down und terminating resistors
* indicator LEDs for RX and TX * removable block terminal for bus connection
* many options adjustable via DIP switches
The RS485 is in use in many applications like
* industrial and home automation (for example MODBUS)
* lighting control (DMX)
* maritime and navigation controls (NMEA0183)
* video surveillance (for example Pelco D)
