Siemens LMV36.520A1 - Connection to Superposed Systems; Building Automation Functions

148/248
Building Technologies Division Basic documentation LMV36... CC1P7544en
Infrastructure & Citiies Sector 17 Special feature: Burner identification (ID) 25.09.2013
17 Special feature: Burner identification
(ID)
The OEM must assign an individual burner identification to every burner. This ensures
that, during backup / restore, incompatible parameter sets cannot be copied between
different burners (also refer to documentation on ACS410 PC software chapter Backup /
Restore and in this document chapter Backup / Restore).
No. Parameter
113 Burner identification
18 Connection to superposed systems
18.1 General information and building automation
functions
Communication with a BAC system is made possible via a data link using the COM X92
port and a special interface with galvanic separation and physical bus level adaptation.
This port can be used for connection of a Modbus, depending on the configuration
made.
OCI412.10
RS485
Modbus
LMV...
COM
X92
Figure 90: Connection via COM X92 to superposed systems

Note
Breakdown of bus communication
If the basic unit detects a breakdown of bus communication, the BAC system must
rewrite the value upon restoration of communication for the Modbus operating mode
and predefined target output