M-Bus Cascade Module - Kamstrup M-Bus Technical Description

7. M-Bus Cascade module

The M-Bus Cascade module can be used to increase
the number of M-Bus Slaves in an M-Bus network
from 40 to max. 250 M-Bus Slaves (primarily
addressing). Furthermore, the cable length can be
multiplied by six by using six M-Bus Cascade
modules mounted in M-Bus Master units.
The M-Bus Cascade module is mounted in an M-Bus
Master and needs neither set-up nor address.
The function of the M-Bus Cascade module is
to repeat communication to and from the M-Bus
Master.
A new M-Bus Master with M-Bus Cascade module
is to be connected to an already existing network
parallel to one of the connected MULTICAL
meters with M-Bus Slave. From the new M-Bus
Master a new network with 38 energy meters and
1 M-Bus Cascade module or 40 M-Bus Slaves can
be established.
It is possible to connect up to 6 M-Bus Masters
and thereby increase the number of energy meters
in the network to a total of 250 meters (primarily
addressing).
Each M-Bus Cascade module has a power
consumption of 2 Unit Loads (3 mA).
= 410 Ω, C
R = 0,5 nF.
in in
Extra cable length per unit:
Max. 1.800 m to the most remote
M-Bus Slave/0.8 mm 2 .
® energy
M-Bus interface
(53, 54)
To this the
M-Bus Slaves
are connected.
Input A (65, 66),
Input B (67, 68).
– Are not in use.
.
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