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Siemens M-bus level converter and M-bus web server A6V11157985_en--_f
Smart Infrastructure 2021-06-21
4.2.3 Level converter to extend a M-bus network
The level converter is used to extend the M-bus system by 60 (WTV531..) or 250
(WTX631..) (60 or 250 simple M-bus loads).
The master level converter (A) is connected to a M-bus web server WTV676.. via
the RS-232 interface (terminals A, B, C).
The following slave level converters (B) can be connected via the M-bus slave
connection.
A maximum of six level converters can be combined to form a network. A maximum
of 360 unit M-bus loads or 1,000 logical M-bus devices can be read via the master
level converter.
A Level converter as master
B Level converter as slave
The level converter is connected as a slave (B) to the web server (A) (terminals
M1M2 of the web server) if the firmware version of the web server WTV676.. is less
than SIE.WTV676_WI-2.29_FW-3.0-17-2.6.
Connect M-bus meters and RVD controllers to different lines, especially if the
meters have batteries.
Note
Note