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I/O Cubes communicate with computer or PLC over Modbus TCP.

Press Release Summary:

UEIModbus Cube is rugged, Ethernet-based data acquisition and control interface that functions as Modbus slave accessed by any software client acting as Modbus master. With temperature range of -40 to +85°C, they withstand 50 g shock and 5 g steady vibration. Six-slot Model 600 measures 4 x 4 x 5.8 in. and supports up to 150 analog inputs or 288 digital I/O, while 4 x 4 x 4 in. 3-slot Model 300 offers 75 analog or 144 digital I/O channels.

Original Press Release:


Modbus® TCP compatible I/O cubes

Canton, MA (March 22, 2007) - United Electronic Industries (UEI) is pleased to announce the release of the UEIModbus Cube. The UEIModbus is a compact, rugged, Ethernet based data acquisition and control interface that communicates with a host computer or PLC over Modbus TCP. The UEIModbus Cube functions as a Modbus slave easily accessed by any software client acting as a Modbus master. Most popular HMI software supports the Modbus protocol.

The UEIModbus 600 cube is 4" x 4" x 5.8" and supports up to 150 analog inputs or 288 digital I/O while the UEIModbus 300 is 4" x 4" x 4" and offers 75 analog or 144 digital I/O channels. Offering over 60 million different configurations of analog input/output, digital I/O, counter/timer and quadrature encoder system, there's sure to be one that's a perfect fit for almost any application.

The UEIModbus is ideally suited for a wide variety of industrial monitoring and control applications. With an operating temperature range from -40° to +85° C, and capable of withstanding 50 g of shock and 5g of steady vibration, the UEIModbus is rugged enough to handle the most demanding environments.

"The UEIModbus sets a new standard in high density, rugged Modbus I/O solutions" according to UEI President Shaun Miller. "One of the historic weaknesses of Modbus systems is high density analog I/O. The UEIModbus will be extremely popular both as a complete I/O system as well as an adjunct to many PLC based applications."

Part # Description Price Availability
UEIModbus 600 Modbus TCP cube with 6 I/O slots $1795 1-2 weeks
UEIModbus 300 Modbus TCP cube with 3 I/O slots $1495 1-2 weeks

For complete details on the UEIModbus series, please visit:

About Modbus
The Modbus messaging protocol was developed by Modicon in 1979 and is used to establish master-slave/client-server communication between intelligent devices. It is a de facto standard, truly open and the most widely used network protocol in the industrial manufacturing environment. Modbus devices communicate using a master-slave configuration. Only one device (the master) can initiate transactions (called queries). The other devices (slaves) respond by supplying the requested data to the master, or by taking the action requested in the query.

About UEI
Founded in 1990, UEI is a leader in the computer based data acquisition and control industry. Serving customers world-wide, UEI products include: the PowerDNA Ethernet data acquisition and control Cube, the UEILogger, an easy to use yet high performance data logger/recorder, and the UEIPAC, a flexible and powerful Linux-based Programmable Automation Controller. The company is also a leading vendor of PCI and PXI based DAQ boards. UEI is committed to providing the highest quality hardware, software and services, enabling engineers and scientists to interface data-acquisition and control hardware to the real world. For more information, please visit our homepage at:

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