Special Feature: Burner Identification; Connection To Superposed Systems; General Information And Building Automation Functions - Siemens LMV37.4 Series Basic Documentation


Building Technologies

16 Special feature: Burner identification

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 the documentation on the PC software ACS410 under
Backup/Restore and in this documentation in chapter Backup / Restore).
No. Parameter
113 Burner identification

17 Connection to superposed systems

17.1 General information and building automation
functions
Communication with a building automation 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 LMV37.4 with Modbus, depending
on the configuration made.
LMV...
Figure 95: Connection via interface COM 92 to superposed systems
Note
Breakdown of bus communication
If the LMV37.4 detects a breakdown of bus communication, the building automation
system must rewrite the following values upon restoration of communication:

Modbus: Mode, Modbus operating mode, and predefined target output
General setting values for connection of the LMV37.4 to the building automation system
(for factory settings, refer to the parameter list):
Bus communication may only be interrupted for the time set.
If communication is disturbed for a longer period of time, the LMV37.4 delivers a fault
status message and the values set in the LMV37.4 by building automation are reset.
Basic documentation LMV37.4...
16 Special feature: Burner identification
OCI412.10
COM
X92
.
Modbus
RS485
CC1P7546en
17.12.2018
153/267