Serial Communication Adaptor
  • RS232 to RS485
     
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 hosts serial port
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A15-321
A15-321
$26.00
  • Serial Communication Adaptor: RS232 to RS485
  • 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 hosts serial port

Standard Features

  • RS-232/485 Converter for Modbus Protocol
  • SCA power from host serial port.