• 4WSD9OTB
  • RS-232 to RS-422/485 optically isolated converter
  • Compact In-line Package
  • Removable Terminal Blocks for RS-422/485 and Power
  • DB9F Connector for RS-232
  • 10 to 48 VDC Input Power is applied via a terminal block
  • 2000 V Optical Isolation
  • More Features
  • Description
  • Specifications
  • Downloads
  • Ordering Guide
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  • The 4WSD9OTB provides RS-232 to RS-422/RS-485 full or half-duplex conversion. 2000 V Optical Isolators protect your equipment from dangerous ground loops and surges. Data is converted in both directions, RS-232 Transmit data is converted to balanced RS-422 or RS-485 Transmit, and Received RS-422/RS-485 signals are converted to RS-232. Unlike converters which require programming hardware handshaking signals to control RS-485 or RS-422 operation, the 4WSDO9TB provides automatic control. The operating mode is set with 4 switches.

    The 4WSD9OTB Features Include:
    • Compact In-line Package
    • Removable Terminal Blocks for RS-422/485 and Power
    • DB9F Connector for RS-232
    • 10 to 48 VDC Input Power is applied via a terminal block
    • 2000 V Optical Isolation
    • Data Rates up to 115.2 kbps
  • Specification
  • Value
  • Interface Protocols
  • RS-232 to RS-422/485 (2/4-wire)
  • Optical Isolation
  • Yes
  • RS-232 connector
  • DB9 female
  • RS-422/485 connector
  • Screw terminal block
  • Max Baud Rate (Kbaud)
  • 115.2
  • Port or External Power
  • External Powered
  • Port Powered Pins
  • -
  • External Power
  • 10-48VDC @ 95mA
  • TX Control
  • RTS or Auto enabled RS-485, or always enabled for RS-422
  • TX, RX LEDs
  • Yes
  • Other
  • Part Numbers
  • 4WSD9OTB
  • RS-232 to RS-422/485 optically isolated converter, DB9 & Terminal Block Connector
  • Power Supply Options
  • POW-ADA/12
  • 12VDC 500mA Power Adapter