32-Channel current sinking (600mA) digital output board with voltage and current monitoring

United Electronic Industries is a leader in the PC/Ethernet data acquisition and control, Data Logger/Recorder and Programmable Automation Controller (PAC) and Modbus TCP markets.

UEI guarantees the availability of all RACKtangle®, Cube, and FLATRACK™ series products (including DNA, DNR, UEIPAC, UEISIM, UEILogger and UEIModbus chassis and compatible I/O boards, manufactured by UEI) for a minimum of 10 years.3 year warranty standard on UEI products

32-Channel current sinking (600mA) digital output board with voltage and current monitoring
Availability: Typically in stock for 1-2 week delivery.


  • 32 digital outputs
  • 600 mA (current sink) outputs
  • Wide 3.3 to 36 VDC output range
  • 1 kHz maximum update rate

Guardian Series Diagnostics

  • Monitors output current
  • Monitors output voltage
  • Programmable current limit
  • PWM “soft-start” outputs

Related Products

  • Signup for product news

Product Description

DNx-DIO-432 (Guardian series) boards are 32 channel, digital output boards. Each channel is configured as a current sink and switches voltages between 3.3 and 36 VDC. Each channel is rated for continuous operation at 600 mA with an output voltage drop of less than 550 mV. The DNx-DIO-432 is an ideal digital output interface in a wide variety of data acquisition and control applications.

As part of UEI’s Guardian series, the DNx-DIO-432 not only controls the digital outputs, it also allows monitoring of each channel’s output voltage and current. This allows the application to detect and flag short and open circuits as well as other “suspicious” behavior.

The Guardian advantage also includes programmable overcurrent protection. The user may select the current and duration of overload (as short as 10 mS) required before the channel is shut down. Each board provides 350 Vrms isolation and update rates to 1 kHz.

Each channel offers a pulse-width-modulated (PWM) “soft-start/stop” capability. This allows power to be applied/removed gradually, greatly increasing the reliability of devices like incandescent bulbs where thermal shock reduces life expectancy.

Software included with the DNx-DIO-432 provides a comprehensive yet easy to use API that supports all popular Windows programming languages as well as supporting programmers using Linux and most real-time operating systems including QNX, INtime, VXworks and more. Finally, the UEIDAQ Framework supplies complete support for those creating applications in data acquisition software packages such as LabVIEW, MATLAB/Simulink, or any application which supports ActiveX or OPC servers.