Dconvertu 27


The Data Converter Unit is a RS-232 to RS-485 converter which is used to convert RS-485 data from MODBUS meters to RS-232 data.

It is a rugged, compact product with a built-in power supply, and is available in both half duplex (2 wire) and full duplex (4 wire) options.


  • Automatic internal RS-485 bus supervision
  • No external flow control signals required for RS-485
  • Minimum 3000V dc isolation protection
  • Transient suppression on RS-485 data lines
  • Baud rate up to 115.2 Kbps
  • Networking up to 4000 feet/1200 Metres
  • Reserved space for termination resistors
  • Power and data flow indicator for troubleshooting
  • Power requirement: +10 to +30 Vdc
  • Mounts easily on DIN rail or panel


  • Power requirements: Unregulated +10 to +30 Vdc with protection from power reversals
  • Case: ABS with captive mounting screw terminals
  • Accessories: Nylon DIN-rail mounting adapter andSECC panel mounting bracket
  • Plug-in screw terminal wiring: Accepts AWG 1-#12 to #22 (0.5 to 2.5 mm) wires
  • Baud rate (bps): 1200, 2400, 4800, 9600, 19.2K, 38.4K, 57.6K, 115.2K, RTS control
  • Isolation Voltage: 3000Vdc
  • RS-232 Interface connector: Female DB-9
  • RS-485 Interface connector: Plug-in screw type
  • Power consumption: 1.2W maximum

Operating Environment

  • Operating Temperature: -10° to 70°C (14° to 158°F)
  • Storage Temperature: -25° to 85°C (-13° to 185° F)
  • Humidity: 0 to 95% RH (non-condensing)