The F-Bus was developed specifically to meet the requirements of modern HVAC and building automation systems. By combining communication and sensor power supply via a two-wire cable, it reduces installation effort, simplifies commissioning and provides a stable data foundation for BACnet and BACtwin applications.
The F-Bus is the fieldbus system developed by SE-Elektronic for building automation and for applications in heating, ventilation and air conditioning (HVAC). It forms the basis for communication between sensors, actuators, I/O modules and automation stations, and ensures that information is transmitted reliably and efficiently within a system.
Unlike universal fieldbus systems, the F-Bus was specifically developed to meet the requirements of modern buildings. Communication takes place via a two-wire cable, which can simultaneously transmit data and supply power to simple sensors. This significantly reduces the amount of cabling required and allows for faster commissioning.
The F-Bus connects the field level directly to the automation level and provides the basis for a consistent data structure right through to BACnet, BACtwin and cloud applications.
In the field, sensors continuously record relevant measurement values such as temperature, humidity, pressure and air quality. These form the basis for demand-based control. Actuators carry out the corresponding commands, for example by controlling valves, dampers or pumps.
Communication between the field devices and the SE controllers is handled by the F-Bus. Its function goes beyond mere I/O communication: it supports diagnostic functions and firmware updates, as well as automatic addressing and the automatic replacement of devices (autoreplacement). This simplifies commissioning, maintenance and servicing in particular. In addition, Modbus devices, such as pumps or fans, can be integrated into the automation system.
Information is collated in the SE controller, where it is processed and utilised for the relevant automation and control functions. The BACnet stack integrated into the controller enables the standardised provision of relevant data via BACnet to building management systems, energy management solutions and higher-level platforms.
When used in conjunction with BACtwin, this information can also be described unambiguously in digital form and structured semantically. This ensures that data is understandable across systems, can be unambiguously mapped and remains usable in the long term.
With a seamless software environment, we guide you through the entire engineering process. Once data has been defined, it can be reused without any loss of continuity – saving time and minimising errors.
Building automation works most efficiently when hardware, communications and engineering work together seamlessly. SE-Elektronic has developed an integrated platform specifically for this purpose.
The F-Bus efficiently connects sensors, actuators and I/O modules at field level to the SE controllers. The controllers process the information and make it available in a standardised format via their own BACnet stack for building control, management and energy systems.
With BACtwin, this data is supplemented with a standardised digital structure. Systems, functions and data points are clearly described and can be used consistently throughout the building’s entire life cycle.
The SE software tools ixWork, ixPert and WebEditor access precisely this database. From project planning through to programming and visualisation, information is created only once and then reused throughout the entire process.
The result: a seamless flow of data from the field level right through to the digital twin. Fewer interfaces, reduced engineering effort, faster commissioning and future-proof building automation from a single source.
Specially developed for building automation and HVAC applications
Data communication and power supply to simple sensors via a single cable
Reduced cabling, quick commissioning and less engineering work
Perfectly tailored to controllers, the BACnet stack and SE software tools
SE-Elektronic develops controllers and communication technologies, as well as the associated software tools, entirely in-house. All components are optimally coordinated with one another and follow a common system philosophy. The result is a seamless platform that significantly simplifies planning, engineering, operation and further development.
A reliable foundation for demanding requirements
In-house development, certified and future-proof
Efficient communication at field level
Understanding technologies. Applying practical knowledge. Shaping the future.
The F-Bus is just one part of a modern building automation platform. Topics such as fieldbus communication, BACnet, BACnet/SC, cybersecurity and much more are constantly evolving. That is why we regularly share our knowledge on the SE Blog.
There you will find practical specialist articles, background information and technical insights directly from our experts. We shed light on the latest developments, explain technical concepts in an accessible way and use specific application examples to demonstrate how modern building automation can be implemented efficiently, in a future-proof manner and across different manufacturers.
With its own fieldbus, a certified BACnet stack, BACtwin expertise and fully integrated software tools, SE-Elektronic offers a comprehensive platform for future-proof building automation.
