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Black Box - IC820A

Async RS232 to RS422/485 Interface Converter DB9 Terminal Block

Model: IC820A

  • Transmit data up to 115 kbps or at distances up to 4000 ft.
  • Operates in point to point or multipoint applications
  • Operates 2-wire half-duplex or 4-wire half- or full-duplex.
  • async (data leads) only.
  • Up to 32 RS485 devices can be attached to create a large multi-drop network
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  • Enables you to select RS-485 2-wire half-duplex or RS-485 4-wire full-duplex operation.
  • Selectable RS-422 operation with transmit and receive always enabled.
  • Automatic RS-485 driver control, so it works without any special programming for handshaking signals. Also enables transmitter from RS-232 TD signal and receiver when not transmitting.
  • Built-in bridging switches for 2- or 4-wire operation with no external jumpers to set.
  • Set operating mode with four switches.
  • Converts using either port power or power from an external 120-VAC/12-VDC power supply (sold separately).
  • No external power is required if two RS-232 output handshake lines are available.
    • Transmit data up to 115 kbps or at distances up to 4000 ft.
    • Operates in point to point or multipoint applications
    • Operates 2-wire half-duplex or 4-wire half- or full-duplex.
    • async (data leads) only.
    • Up to 32 RS485 devices can be attached to create a large multi-drop network
    • The RS485 driver is automatically enabled during each spacing state on the RS232 side.
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