Special Feature: Identification Of Burner (Id); Connection To Superposed Systems; General And Functions Of Building Automation System - Siemens LMV37.4 Series Basic Documentation

Building Technologies
HVAC Products
15 Special feature: Identification of burner
(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 dif-
ferent burners (also refer to documentation on PC tool under Backup / Restore and in
this documentation in chapter Backup / Restore ).
No. Parameter
113 Burner identification

16 Connection to superposed systems

16.1 General and functions of building automation
system
Communication with a building automation and control system is accomplished 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, de-
pending on the configuration made.
LMV...
Figure 54: Connection via interface COM 92 to superposed systems
Note
Breakdown of bus communication .
If the basic unit detects a breakdown of bus communication, the BAC system must re-
write the following values upon restoration of communication:
•
Modbus: The Modus, Modbus operating mode and predefined target output
General setting values for connection of the basic unit to the BAC 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... basic unit deliv-
ers a fault status message and the values set in the basic unit by the BAC system will
be reset.
Basic documentation LMV37.4...

15 Special feature: Identification of burner (ID)

OCI412.10
COM
X92
Modbus
RS485
CC1P7546en
01.12.2009
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