B+B Serial RS-232 To RS-485 Converter 485SD9RJ

The 485SD9RJ is a port-powered, half-duplex RS-232 to RS-485 converter with send data control. The unit converts TD and RD RS-232 lines to balanced RS-485 signals and supports two-wire RS-485 communications only. The converter is powered from the RS-232 handshake lines, RTS, CTS and DTR, DSR, CD. The handshake lines are looped back on each other and can be in either state. 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. 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 a six-position RJ11 connector.

Product Type	Phone Adapter
Brand Name	B+B
Manufacturer	B+B SmartWorx
Product Model	485SD9RJ
Product Name	Serial RS-232 To RS-485 Converter
Manufacturer Part Number	485SD9RJ
Manufacturer Website Address	http://www.bb-elec.com
Connector on First End	1 x 9-pin DB-9 Female RS-232 Serial
Connector on Second End	1 x RJ-11 Phone
Adapter Type	RJ-11/Serial
Limited Warranty	Lifetime