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

"Read Secondary
Address"
Command
Many devices are stored at one single memory location in the
network node. This command furnishes the complete secondary
address for the memory location selected in the event that the
memory location is used.
SND_UD #1:
42 7A mp mp 08 79
SND_UD #2:
82 01 7A mp mp 08 79
The mp mp value constitutes a 16-bit binary value (integer) for the
identification of the memory location selected. The lowest-value byte
is transmitted first (LSB first).
Example:
42 7A 23 01 08 79
selects memory location 291 (=123h).
Depending on the memory block selected, the command provides
the following responses after an REQ_UD2:
RSP_UD #1:
42 7A mp mp 07 79 id id id id ma ma vv mm
RSP_UD #2:
82 01 7A mp mp 07 79 id id id id ma ma vv mm
If there is a secondary address at this memory location, whose
device ID is different from the fabrication number, the following
response will appear:
RSP_UD #1:
42 7A mp mp 07 79 id id id id ma ma vv mm 0C 78 fn fn fn fn
RSP_UD #2:
82 01 7A mp mp 07 79 id id id id ma ma vv mm 0C 78 fn fn fn fn
mp mp queried memory location number (memory position) –
(16-bit binary value (unsigned integer))
id id id id Device ID – 32-bit (8-digit) BCD-coded
ma ma Manufacturer code – 16-bit binary value (unsigned
integer)
vv Version – 8-bit binary value (unsigned integer)
mm Medium – 8-bit binary value (unsigned integer)
For intra-company use only 35/56
Siemens
Netzwerkknoten WTT16/WTX16
Building Technologies The Network Node 09.03.2007