The topology of a KNX bus system is designed around a simple logical set of rules making it easy to install and understand. A typical KNX installation will consist of a control panel designed to house the KNX power supply(s) and other DIN rail mounted devices. The control panel will be sized to suit the project as KNX is a modular system whereby components are selected depending on the requirements of the project.
This modular design approach gives maximum flexibility without compromising functionality as the system can be designed to overcome many of the well-known site issues such as limited riser space and/or ceiling void space. One other key point to note is that the control panel could form part of the electrical distribution board, saving labour and space. A KNX system can also be designed without any central control panels and be completely distributed in the field.