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BACnet Insight

circuit, pre-heater, heat recovery) and several examples of plant templates (e.g. weather
station, pressure maintenance).
BACtwin enables lossless data exchange
The user addressing key (UAK) plays a key role in the data model. The BACtwin working
group has further developed the UAK proposed in VDI 3814 Sheet 4.1 into a machine-
interpretable BACtwin UAK, which creates the necessary standardized basis for data
communication in BACtwin projects. The differentiated structures and unambiguous
terms of the BACtwin UAK enable coherent data point designations and IT-supported
evaluations of the data points, BAC functions and system structures.
The operator requirement (orange) ensures the binding introduction of the BACtwin concept.
As buildings and their uses are very different, the operator requirement lists possible options
(e.g. UAK numbering, reporting class, execution control). The building owner/
operator specifies the desired or undesired options in the operator requirement for all
projects. The operator requirement creates a well-founded, uniform basis for all planning,
tendering and awarding as well as for execution and acceptance.

BACtwin-compatible software tools are important work aids for BACtwin users.
Through the integration of the BACtwin data model, they enable a
standardized, structured approach and a consistent process from planning,
engineering, acceptance and operation through to monitoring and data transfer.
They create the basis for interoperable BA systems in accordance with german GEG
(Building Energy Act) §71a. The graphic distinguishes between software tools for planning, Digital Services
engineering and operation (blue) and testing tools (green).
The software tools enable the automated implementation of the planning, creation, aus der
commissioning and technical monitoring of standardized systems. The planners and
contractors can access neutrally predefined standard units, assemblies and systems.
The standardized addressing supports efficient IT-supported BA applications and neutral,
loss-free data exchange. Schöpfen Sie das Potenzial smarter Gebäude aus!

In important process phases, the testing tools validate the standardized mass data for
planning, execution and operation completely 1:1. The testing tools are used as indispensable Performance Management
tools for acceptance and good quality assurance.
Konsolidierung der Datenfl ut anhand weniger, entscheidender
BACtwin offers important advantages to all project participants Indikatoren und automatische Warnungen bei Abweichungen
The BACtwin application offers important advantages to all project participants. Thanks vom Normalbetrieb.
to the comprehensive, neutral standardization of the AMEV, the client, BAC planner and
contractor do not have to “start from scratch” for every construction project. Discussions
about the “correct use of BACnet” become superfluous. The development and coordination Remote Management
effort involved in planning, implementing and refurbishing BACnet systems is considerably Intelligente Fernzugriffsmöglichkeiten auf die lokale Anlage
reduced. Duplication of work and errors due to media disruptions are avoided. BACtwin
promotes cooperative interaction between project participants and fair competition. sowie Verfügbarkeit von SAUTER Engineeringtools, auch für
externe Servicedienstleister.
In Germany, according to GEG §71a, BAC systems must support communication with
connected technical systems and interoperability with building services systems from
2025. BACtwin creates the data technology basis for implementing the GEG regulations Customer Portal
and the European Green Deal within building automation. With an increasing shortage of
skilled workers, these challenges can only be overcome with further standardization. The Technische Pläne, Service-Kontakte sowie Dokumente und
AMEV BACtwin is intended to make a contribution to this. 
Rechnungen sorgen für ein transparentes Gebäudemanage-
ment. Die Einbindung von Performance-Indikatoren unterstützt
Sie beim Risikomanagement.

Die Digital Services sind Teil kundenspezifi scher Service-
pakete der SAUTER Vertriebsorganisationen.

Jürgen Hardkop
MinR i.R. Dipl.-Ing.Obmann AMEV AK BACtwin
juergen.hardkop@googlemail.com Nehmen Sie Kontakt auf!
www.amev-online.de

Treffen Sie uns am Gemeinschafts-
stand der BACnet Interest Group
E11 in Halle 9.0!

Jürgen Langstein
ConsultantDelta Controls
jlangstein@deltacontrols.dewww.deltacontrols.de Systems
Components
Services
Facility Management
18 BACnet Europe Journal 40 03/24