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In Brief

01 June, 2005

In Brief

A Profibus International working group has created a technique for providing security for Ethernet-based automation networks against data espionage and manipulation. The idea is to segment the automation network by forming protected automation cells. Network nodes in a cell are protected by special Profinet security network components so that only authorised data traffic is allowed to pass.

The CAN in Automation (CiA) international users` and manufacturers` group has established three new special interest groups to develop CANopen profiles for applications in HVAC (heating, ventilation and air-conditioning), laboratory automation and construction machinery.

• International Rectifier has introduced a motor drive chip that does not need a heatsink for applications up to 180W. The IR3013 chip is said to simplify the design of compact, high-performance two- and three-phase half-bridge inverter motor drives for appliances such as fans and refrigerators.

The Industrial Ethernet group IAONA has published a second edition of its handbook which provides an introduction to Industrial Ethernet and covers the five protocols of IAONA`s partner organisations: EtherCAT; EtherNet/IP; Ethernet Powerlink; Modbus/TCP and Sercos III. For a free copy, send your address to

The power semiconductor specialist Semikron has created an on-line calculation and simulation tool that helps designers to choose the best power device for their applications. The SemiSel tool calculates losses and temperature increases for four types of circuit.

Allegro Microsystems Europe has launched a bipolar stepper motor driver chip said to be easy to interface with industrial and office automation applications. The A3982 chip has 35V, ±1.5A outputs and is controlled by a simple two-wire step and direction interface for full- or half-step modes.

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