The ADA-4020 converts RS485/RS422 standard to Current Loop without interfering with format of transmitted data with maximum baud rate of 38,4kbps via 2-pair of twisted pair.
The converter has screw terminal block for connection of RS485/422, Current Loop networks and power supply. This device use RX+, RX-, TX+, TX- signals for operating.
Over-voltage protection was made on base safety diodes and fuses on each RS485/RS422 and Current Loop lines. You can connect 32 devices operate in half duplex mode (inquiry / response) on 2 or 4 wires, multipoint RS485/422 bus or full duplex mode on 4 wires RS485/422 bus, built on the base of ADA-4020 converters.
To Current Loop line based on ADA-4020 you can connect: