Siemeca AMR ™ Network Node WTT16/WTX16 M-Bus ... - Armatec AB

The following combinations are possible:
Application Selected Data for Response
Select
10 Standard data only
20 Standard data only
30 Standard and statistical data
40 Standard and tariff data
Other No impact. Application select will be ignored (no
application error).
Table 6: Coding for Application Select
Application Select is stored permanently and preserved until the next
Application Select or Application Reset is effected. Application
Select can only be executed on meters. The network node will
ignore any form of Application Select.
Send Data
Send Data is used for transmitting commands to the network node or
to the devices stored in it.
Send Data
(Hex)
Code
CI Field 1 51
DIF 2 01 Example:
VIF 3 7A
Value 4 01
Set primary address to "1."
Select / Deselect
The Select command serves to select a specific device on the M-bus
for communication. "Select" is required only if the slave is to be
operated through a secondary address. Only one device may be
selected on the bus at any given time. Otherwise, collisions may be
caused by slaves responding simultaneously. In such a case, not
only invalid responses, but also telegrams with a seemingly correct
content may reach the master, so that deselection will be
compulsory. Nor may any wildcards be used in the selection
process, as they are bound to result in multiple selection.
For intra-company use only 23/56
Siemens
Netzwerkknoten WTT16/WTX16
Building Technologies The Network Node 09.03.2007