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Serial Communication Adaptor RS-232 to RS-485, A15-321

Brand: Kayden Instruments
Serial Communication Adaptor
  • RS-232 to RS-485
RS-232 Side
  • Connector
    • DB-9 female
  • Signals
    • Passes through pins 3 (TD) and 2 (RD)
    • Pins 7 (RTS) and 8 (CTS) are tied together
    • Pins 4 (DTR), 6 (DSR) and 1 (CD) are tied together
RS-485 Side
  • Connector
    • 4-pin terminal block
  • Signals
    • Half-duplex two-wire operation only
    • Automatic control circuit enables driver only when transmitting
    • Receiver is disabled when transmitting to prevent echo back to RS-232 device
    • Can transmit up to 4000 feet at 19200 baud.
Power Requirements
  • At least two RS-232 handshake lines, derives power from the host's serial port
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Serial Communication Adaptor
  • RS-232 to RS-485
RS-232 Side
  • Connector
    • DB-9 female
  • Signals
    • Passes through pins 3 (TD) and 2 (RD)
    • Pins 7 (RTS) and 8 (CTS) are tied together
    • Pins 4 (DTR), 6 (DSR) and 1 (CD) are tied together
RS-485 Side
  • Connector
    • 4-pin terminal block
  • Signals
    • Half-duplex two-wire operation only
    • Automatic control circuit enables driver only when transmitting
    • Receiver is disabled when transmitting to prevent echo back to RS-232 device
    • Can transmit up to 4000 feet at 19200 baud.
Power Requirements
  • At least two RS-232 handshake lines, derives power from the host's serial port
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Specifications

Standard Features

  • RS-232, RS-485 Converter for Modbus Protocol
  • SCA Power from Host Serial Port.