VP-EC-8AO Analog mA Output I/O Module Modbus RTU RS485

Analog Output I/O Module, 8 Channels 4-20mA, RS485, Modbus Interface

Regular price $214.50 USD Sale

8 Point Analog Output I/O Module, 4-20 mA, RS485 Modbus RTU Interface


  • Power: 24 VDC
  • RS485  Switch Selectable 9600 or 19.2K Baud, N81
  • Modbus RTU Protocol
  • Modbus ID: Dipswitch Selectable
  • Analog Outputs: 4-20 mA into 1000 Ohm load @ 24 VDC
  • Resolution: 12 Bit DAC (MCP4922 Dual 12 bit DAC with SPI Interface)
  • Calibration: Simple calibration via jumpers


  • PIC18F45K20, c/w ICSP Port
  • Can be used as an Analog Output Development Platform


  • Power On: BLUE LED
  • Analog Output: 1 thru 8: GREEN LED ON when input above 2mA
  • Analog Output: Amber LED in series with output to show signal strength
  • Heart Beat: AMBER LED (Flashes to indicate proper operation)
  • RS485: GREEN LED Rx, RED LED Tx.


  • DIN Rail Enclosure 6.5" Long x 3.5" Wide x 1" High
    Available in Black (Standard), Blue (Custom) and White (Custom)
    Fabricated with PETG Plastc

For Modbus Registers and programming information, please visit the product page at vpprocess.com.