GAMMA
instabus
Release: February 2012
KNX EIB TP-UART 2-IC
Siemens AG
pages 42
Technical Manual
Infrastructure and Cities Sector,
Building Technologies
Control Products and Systems
© Siemens AG 2012
page 23
P. O. Box 10 09 53,
Subject to change without further notice.
D-93009 Regensburg
3.2.3.1.6
U_ResetBusyMode
The service U_ResetBusyMode deactivates immediately the BUSY mode in the TP-UART. All
addressed telegrams are answered according to the intern address flags. The host shall synchronize
its receiver before sending the U_ResetBusyMode.
UART-Controlfield (22
hex
)
7
6
5
4
3
2
1
0
0
0
0
1
0
0
1
0
Fig. 9: U_ResetBusyMode
3.2.3.1.7
U_SetAddress
This service configures the physical address of the TP-UART. If this service is repeatedly sent (e.g. the
physical address changes), the new address will be active in the TP-UART after reception of the
complete U_SetAddress service and when no Layer 2 frame is currently received from the EIB. If the
address is set a complete address evaluation in the TP-UART is activated (group-addressed telegrams
are now generally confirmed).
Note: The TP-UART does not evaluate the received EIB telegrams which were sent itself.
After reset the address evaluation is deactivated again.
UART-Controlfield (28
hex
)
7
6
5
4
3
2
1
0
0
0
1
0
1
0
0
0
physical address high
physical address low
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
a
a
a
a
l
l
l
l
d
d
d
d
d
d
d
d
Fig. 10: U_SetAddress
The TP-UART analyzes after setting the physical address independently of the host controller all
telegrams and evaluates the destination address. If addressed then the IACK generation takes place.
The TP-UART analyses for this reasons the different frame formats (standard frame and extended
frame format according to the KNX standard).
- Frameformat
Standard
:
Octet 0
...
Octet 3
Octet 4
Octet 5
...
Ctrlbyte
1
0R1cc00
...
High byte
destaddress
Low byte
destaddress
NPCI
A
xxx xxxx
...
