The 485DRJ is a port-powered, full-duplex or half-duplex RS-232 to RS-485 converter with send data control. The send data control enables the driver without software intervention. The unit converts TD and RD RS-232 lines to balanced RS-485 signals and supports two or four wire RS-485 communications. The converter is powered from the RS-232 handshake lines, RTS, CTS and DTR, DSR, CD. Only one of the handshake lines must be present and in any state to power the converter. No handshake change is necessary so no software is required to control the lines. The RS-485 driver is enabled with each bit of data when in send data control mode. The RS-485 receiver is disabled when the driver is enabled and is enabled when the driver is disabled. This prevents data from being echoed back into the RS-232 device. The RS-232 side has a DB-9 female connector. The RS-485 side has two six-position RJ11 connectors for easy multi-drop connections.
- Communication: Two or four-wire
- Data Rate: 115.2K Baud max.
- Power: Port-powered from handshake lines
- Dimensions: 7.6 x 5.6 x 2.2 cm (3.0” x 2.2” x 0.9”)
- Temperature Range: 0°C to 70°C
