Siemens KNX EIB TP-UART 2-IC - Page 23

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
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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
10R1cc00
... High byte
destaddress
Low byte
destaddress
NPCI
Axxx xxxx
...