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 handbook@iaona.org

• 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.