wilamowski-b-m-irwin-j-d-industrial-communication-systems-2011

KNX 42-13
not fully and seamlessly integrated with those that have grown from the electrical trade. As a consequence
from these developments, the KNX specification has become complex to read, although
considerable efforts toward consolidation were taken for the current release of the KNX master specification
(KNX Handbook 2.0).
Nevertheless, there is ample room for further activities: Open and stable formats for the description
of product configuration data (user application resources) and project specific data are still missing,
although an XML-based proposal has been in its draft stage for years and the upcoming ETS version
4 stores project and product data in XML. Efforts should also be directed into a Web services mapping.
While protocol security is slowly being addressed by manufacturers, safety issues have not been taken
into account so far.
Abbreviations
AL Application layer
APDU Application layer protocol data unit
AT Address type
BAU Bus attachment unit
BCU Bus coupling unit
BIM Bus interface module
cEMI Common external message interface
DL Data link layer
DPT Data point type
EIB European Installation Bus
EMI External message interface
ETS Engineering tool software
FB Functional block
FCS Frame checking sequence
GO Group object
IP Internet protocol
LTE Logical tag extended
NL Network layer
PDU Protocol data unit
PIM Powerline interface module
PL110 Powerline 110
RF Radio frequency
SAP Service access point
TL Transport layer
TP1 Twisted Pair 1
TPDU Transport layer protocol data unit
References
1. KNX Specifications, Version 2.0, KNX Association, Diegem, Belgium, 2009.
2. EN 50090, Home and building electronic systems (HBES), CENELEC, Brussels, Belgium, 1994–2009.
3. EN 13321-1, Open data communication in building automation, controls and building
management—Home and building electronic system—Part 1: Product and system requirements,
CEN, Brussels, Belgium, 2006.
4. EN 13321-2, Open data communication in building automation, controls and building
management—Home and building electronic systems—Part 2: KNXnet/IP communication, CEN,
Brussels, Belgium, 2006.
© 2011 by Taylor and Francis Group, LLC