Intelligent control + Cost-effective planning
What does bus communication mean at D+H?
Generally speaking, the term “bus” in information Technology refers to a system for transmitting data between multiple nodes in a network using a shared transmission path. Today, there are all different kinds of bus systems, such as in cars (CAN bus) or in smart homes (KNX, LON, BACnet etc.). In most cases, the most important nodes of a smoke extraction and ventilation network are a building management system, the window drives and, if necessary, the control panels.
Protocols are used as transmission paths in order to meet therequirements for system-internal, secure and stable communication. These protocols can be transported both via Radio signal or via cable. Through the establishment of a common protocol, the individual devices can “talk with each other”, i.e. exchange information – in other words, “bus communication”.
ACN + ACB
The two bus systems of D+H
The Advanced Communication Network (ACN/AdComNet) is the first SHEV bus system certified by VdS. This technology allows SHEV controllers to be combined to form a single decentralised and overarching system. The controllers are linked in such a way that complex scenarios can be configured depending on space utilisation, i.e. individualised smoke compartments for opening and closing windows.
The Advanced Communication Bus (ACB/AdComBus), by contrast, is based on the Modbus RTU protocol and regulates communication between controllers and drives rather than between controllers. ACB should therefore be understood as being an enhancement to AdComNet. For pure ventilation purposes, ACB drives can be operated directly from the building management system. For SHEV functions, the integration of a CPS-M – the digital SHEV control panel from D+H – is always necessary.
Your Plus through AdComBus
- Direct control of the drives using the building management System
- Individualised control of multiple drives on a single cable
- Position control accurate down to the percent
- Feedback about the ACTUAL position of the drives
- Optimal display of possible error messages
- Fewer cables and lower wiring effort thanks to bi-directional communication
With the best connections
Comfortable without fail: AdComNet at the DNB Bank headquarters
The DNB Bank bundles 20 of its locations at the headquarters in Oslo. The 17-storey building features extravagant architecture. The building's modular pixel structure is particularly well suited for the modular system architecture of the AdComNet solution from D+H.
Automatically more fresh air
Digital window automation in the Glucksman Library with AdComBus.
The Glucksman Library is Ireland's most modern library and one of the most digitally advanced in the world. The window automation system implemented by D+H completes the high-tech overall concept.
ACB – the new alphabet
When windows learn to speak
The newly-developed Advanced Communication Bus (ACB) from D+H has revolutionised communication between window control systems and drives. Especially during major projects, building operators are often faced with the question, "Are all of my connections working? And if not, where is the problem?"
ACB allows the drives to communicate with the control systems and gives them feedback about their opening widths and conditions. But this is just one major advantage of the innovative bus technology. It also significantly reduces wiring effort, reducing installation effort and costs, and makes it possible to specify control of the drives down to the millimetre.