QNX Library for the PowerDNA DAQ Cube

By DE Editors

United Electronic Industries (Canton, MA) has added complete QNX Real Time Operating System support for its PowerDNA series of data acquisition and control cubes. The new PowerDNA QNX library can be deployed on any host computer running the QNX RTOS and connected to the PowerDNA cube over the Ethernet (10/100baseT).

The library is compatible with the popular versions of QNX, including revisions 4.x and 6.x. In addition to the library, the support package includes examples and demonstration programs, as well as complete documentation. 

The QNX library supports three operating modes. In “Immediate Mode,” the host polls data from or writes data to the cube in a software-controlled mode. With “DMAP,” the cube acquires data paced by its internal clock and transfers each scan independently over the network to the host. DMAP mode is specifically designed for high-speed real-time control applications and guarantees 1000 analog/digital I/O points can be updated in less than 1 ms. Finally, in “Circular Buffer” mode, the cube acquires data paced by its internal clock and transfers it into buffers over the network to the host. This buffer ensures no data is lost during times when the network is busy performing other tasks.

PowerDNA is a compact Ethernet-based data acquisition and control device. Each PowerDNA Cube consists of a core module (that holds the processor and network interface) along with three or six open I/O slots or layers. A full description of PowerDNA is available by clicking here.

Sources: Press materials received from the company and additional information gleaned from the company’s website.