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RSFC24W-B9FSPS - RS232 to RS485 2 Wire Half Duplex Non-isolated Bidirectional Converter


Product Description

RSFC24W: RS232 to RS485 2 Wire Half Duplex Non-isolated Bidirectional Converter w/ 12V Power Supply & DB9F Adapter w/ 7ft. Cable in Boxed Enclosure. 

  • This auto transmit unit features Bi-directional serial conversion from RS232 to RS485 in 2 wire half-duplex communications mode.

  • The RS485 driver, with built in electro-static protection, allows 32 standard loads at 4000 ft. and data rates up to 115.2 Kbps.

  • Transparent to all asynchronous data, with any combination of data, parity, and stop bits, at data rates up to 115.2Kbps.

  • Fast auto turn-around, from transmit to receive mode, requires no software delays and eliminates timing problems and data collisions. A special jumper(J9) can further shorten the turn-around time to accommodate fast responding target devices.

  • A polarity protected linear power regulator accepts supply voltages from 8 to 15 VDC, at 0.5 Watt(typical) to 1 watt(max).

  • Jumpers allow the RS485 termination and bias resistors, and the RS232 DTE/DCE mode to be user configured. Jumper J10 will place the unit in Loop-Back mode for self test.

  • The user connections are an RJ11/12 telephone style connector(RS232), a 3 pin Wago style spring loaded terminal strip(RS485), and a 2.1 mm barrel connector(power).

  • Broad environmental range. Temperature: -40C to +85C(-40F to +185F). Humidity: 10 to 90% RH(non-condensing)

  • Four(4) easy mount through hole standoffs, which accept #6 hardware, are provided on the circuit board.

  • Accessories available are a 12VDC Switching Power Supply(Wall Wart), an enclosure, and a 7ft DB9F to RJ11/12 RS232 cable.

  • This unit is also available with an RJ11/12 telephone style connector for the RS485 port.(RSCF24R)

  • The functionally identical ASC24W/R series of converters, feature edge mounted power and data activity LEDs

  • We strongly recommend that a first time user of this product purchase the optional DB9F-7 to RJ11/12 RS232 cable.

  • R E Smith Inc makes a wide variety of isolated converters that address the electrical noise problems that contribute to unreliable communications, and product failure.

  • Conformal Coating, other cables, and other connectors are factory options. If what you see here is not exactly what you need, don't hesitate in calling us at (513) 874-4796.                                         


Click here for more information about the RSFC24W RS232 to RS485 Bidirectional 2 Wire Half Duplex Converters!

Questions? Call 513 874-4796 

MORE DETAILS: click here


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