Home Notizie Archivio 2012 Modulo NI CompactRIO Profibus
Modulo NI CompactRIO Profibus PDF Stampa
Scritto da Rodigari Mario   

17 Maggio 2012

National Instruments: modulo NI CompactRIO Profibus

Grazie al modulo NI CompactRIO Profibus master/slave è possibile configurare in LabView, in modo semplice e rapido, una comunicazione via Profibus con le soluzioni NI CompactRIO.
Questo modulo Profibus a una porta permette il collegamento dei PAC di National Instruments a reti industriali Profibus come master o slave. L’interfaccia include NI-Profibus per driver CompactRIO per applicazioni HMI (Human Machine Interface) e Scada e il software Configurator. Con queste interfacce è possibile effettuare test automatizzati di dispositivi Profibus.
Il modulo è compatibile con le unità NI LabView Fpga e NI Single-Board RIO; inoltre, i sistemi CompactRIO possono essere aggiunti come nodi master alla rete industriale Profibus.
Diffusa nel mondo con oltre 20 milioni di nodi installati, Profibus è una delle reti industriali più utilizzate per la connessione affidabile su lunghe distanze di PLC, I/O, sensori e drive in ambienti industriali.
LabView consente di ridurre la complessità della programmazione comunemente associata a sistemi di controllo come quelli su reti Profibus. Inoltre, tramite il controllo realtime è possibile realizzare applicazioni eseguibili in modo deterministico con una maggiore affidabilità e operatività stand alone. Uno dei vantaggi sta nel fatto che il progetto dell’intera soluzione realizzata in LabView contiene anche la configurazione di rete Profibus/Profine.
Il modulo Profibus integrato in CompactRIO è nato in seguito a un accordo fra NI e Comsoft, azienda tedesca esperta nella realizzazione di comunicazioni su bus di campo, già Alliance Partner di National in Germania, che ha progettato il modulo master/slave per Profibus (disponibile anche per Profinet). National lo ha inserito nel proprio catalogo prodotti.

Ritorno all'Indice
e 2012
Desigo V5: Innovations from Siemens increase building efficiency
The Siemens Building Technologies Division has introduced version 5 of its Desigo building automation system. Its innovative products such as Total Room Automation as well as efficiency features, like RoomOptiControl and Eco Monitoring, give building operators and users an active role in energy management, leading to permanent reductions in energy and maintenance costs.
A state-of-the-art building automation system is always optimized for energy-efficient operation. However, these optimized settings may start to drift over time. One of the underlying causes is often a lack of transparency for users who simply don't know how the setpoint changes they make can impact energy consumption. This is particularly true for air-conditioned rooms which are also equipped with lighting and sun protection controls. The new version of Desigo keeps room users and building operators apprised of the building's efficiency status. Feedback to users is given using the innovative Green Leaf display, adapted to the expertise and control options of each user group. The system makes it possible to change settings if needed to restore optimal energy efficiency. A study by Technische Universität München (TUM) indicates that by actively involving operators and users in the energy management of a building, energy consumption can be reduced by up to 25% without affecting comfort.
Total Room Automation offers energy savings without reducing comfort
The open, programmable room automation range Desigo Total Room Automation (TRA) is a holistic solution encompassing the HVAC, lighting and shading disciplines. Desigo TRA uses an innovative efficience feature called RoomOptiControl. It automatically detects unnecessary energy consumption in the room and notifies users by changing the color of the Green Leaf icon on the QMX3 room control unit: If room operations are energy efficient, this icon is green. If settings made by a room user lead to unnecessary energy consumption, the icon turns red. To reset room control to energy efficient operation, the user simply presses the display and the Green Leaf icon returns to green.
Using BACnet/IP, PXC3 room automation stations—also part of the TRA package—are integrated seamlessly into the PX automation level with its primary systems (heating generators, HVAC main units and cooling generators). The primary systems are controlled directly through the demand signals from the rooms. This means that the primary systems are only turned on if needed and their operation is adjusted so it meets the room requirements without exceeding them. One room automation station can cover multiple rooms. TRA offers complete integration of KNX, DALI and EnOcean devices; existing or new sensors and actuators from Siemens can be incorporated as well.
Eco Monitoring to reduce energy consumption and wear
Eco Monitoring is another innovative efficiency feature of Desigo. It monitors ongoing operations of HVAC systems based on energy-related quality condition indicators such as readings from temperature, humidity and pressure sensors, runtime, switching behavior and operational performance of the systems. Should deviations from the target state, inefficient operations or increased energy consumption occur, the building operator is notified via the Green Leaf display on the Desigo Insight management station. Current and future international standards (such as EN 15323:2007) require such a feature in order to optimize building operations over the long term.
Desigo Eco Monitoring not only helps optimize energy consumption, it also reduces wear. Thanks to its dynamic behavior and timely reporting, the Eco Monitoring feature recognizes unfavorable system operations early on, allowing operators to intervene immediately before any negative impact occurs. If desired, operators can choose to be notified of unusual events via text messaging (SMS), fax or e-mail.
Expanded networking of the automation level
Starting with version 5, Desigo also offers expanded end-to-end networking of the automation level. Enhanced support for communications standards ensures efficient system integration. The PXC series of compact automation stations has a higher number of universal inputs/outputs, which makes them much more flexible. To protect existing investments, different device generations, such as PTM and TX I/O modules and RXC room controllers, can be used in parallel on the same PX automation station.

Ultimo aggiornamento Giovedì 17 Maggio 2012 21:04