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10/2021 · User Manual Version 1.0 · valid from firmware version 3.1.22
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The button “MBus Settings” leads to the settings of the serial M-Bus interface and global
definition of default values for basic M-Bus units.
The Logger ID is used as a site / plant description and to identify of the export files. The master-device for the
internal M-Bus level converter is “/dev/ttyAPP0“. The default baudrate for the M-Bus meters is in general 2400
baud, but some old meters only support 300 baud. There are also meters communicating additionally with
9600 Baud. Please mind that the total length of an M-Bus installation is substantially limited by choosing a
high baudrate. You can select more than one search baudrate if you expect to have meters with different
baudrates on the bus. The master timeout is the time in milliseconds the master waits for a reply of a meter.
The collision timeout indicates the time in milliseconds the master waits before sending a new telegram after
it has detected a parity and break error (collision). There is also a global setting for the default units in the
export files to get same values of different meters always with the required unit. This allows a direct processing
of the export data without recalculation. The button “Save” stores the changed settings.