Modbus - Siemens LMV37.4 Series Basic Documentation

Basic unit with integrated air-fuel ratio control for forced draft burners
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16.2 Modbus

With this type of bus protocol, the LMV37.4... basic unit operates as a slave on the
Modbus and the transmission mode used is RTU (Remote Terminal Unit).
For more detailed information, refer to the Modbus User Documentation (A7541).
No.
Parameter
Device address for Modbus of basic unit
145
Setting values
1...247
Setting of Baud rate for Modbus communication
146
Setting values
0 = 9600
1 = 19200
Setting of parity for Modbus communication
Setting values
147
0 = none
1 = odd
2 = even
The factory settings of the parameters are shown on the parameter list.
Note
If bus communication breaks down, the mode, Modbus operating mode and prede-
fined target output must be rewritten.
Basic documentation LMV37.4...
16 Connection to superposed systems
115/213
CC1P7546en
01.12.2009

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