B&B 4WSD9xx-Serie

Port Powered Serial Converter

B&B 4WSD9xx-Serie

  • DB9 Female RS-232
  • TB für RS-422/RS-485
  • Port power oder External 12V
  • Automatic RS-485 Driver Control
  • Betriebstemp.: 0°C bis + 70°C

Serial Technologie:

  • RS232 Connector: 4WSD9R: DB9 female
  • 4WSD9TB: DB9 female
  • RS422/485 Connector:
  • 4WSD9R: DB9 female
  • 4WSD9TB: Terminal block


  • Port-powered: from RS-232 handshake lines
  • External 12-16 VDC power supply, optional
  • Input Voltage: 12 VDC @ 100 mA


  • 4WSD9R: 7.8 x 4.3 x 2.0 cm
  • 4WSD9TB: 9.0 x 4.3 x 2.3 cm
  • Enclosure: Plastik


  • 4WSD9R: 49g
  • 4WSD9TB: 50g


  • Betriebstemperatur: 0°C to + 70°C
  • Lagertemperatur: -40°C to + 85°C


Port Powered RS-232 auf RS485 Konverter


Unlike converters which require programming hardware handshaking signals to control RS-485 or RS-422 operation, the B&B 4WSD9xx provides automatic control. In RS-485 mode, the RS-485 driver is enabled by circuitry which senses the RS-232 TD input. In half duplex RS-485 mode, the receiver is enabled when not transmitting. For full duplex operation, the receiver is set always enabled. In RS-422 mode, the transmitter and receiver are always enabled. The operating mode is set with 4 switches (Table 1).

The 4WSD9TB is powered by the RS-232 signal lines whether they are set high or low. If not enough power is available from the port, or no handshaking lines are available, a DC jack is provided to connect a 12VDC supply. The DB9 female connector for RS-232 is wired as DCE (like a modem).

Zusätzliche Information

Gewicht 8 kg
Größe 45 x 20 x 12 cm
Serial Converter (B&B)

Port Powered

Hersteller (Industrial Switches & Converter)

B+B Smartworx

(Art.Nr.: 17522) B&B 4WSD9TB

  • RS-232 Connector:  DB9 Female
  • RS-485 Connector: Terminal Block
  • Output: Rs-485 2 or 4-wire or RS-422

(Art.Nr.: 17523) B&B 4WSD9R

  • RS-232 Connector:  DB9 Female
  • RS-485 Connector: DB9 Female
  • Output: Rs-485 2 or 4-wire or RS-422


  • Extend RS-232 data signals up to 1.2km
  • Change RS-232 TD and RD to RS485 signals
  • Automatic Send Data Control
  • Baud Rates up to 115.2 kpbs
  • Dipswitch selectable RS-422 or RS-485
  • RS-232 Port Power or External 12VDC Power Jack

Art.Nr.: 17522