Munters Communicator 2.0 - 3.12 Enabling SMS Messages; 3.13 Testing the Battery

© Munters AB, 2019 15
Figure 10: T-Junction (not permitted)
NOTE: When using RS-232, there is no restriction on the distance between the T-Junction and the
controller.
3.10.4 T
ERMINATION
Termination, installing 120 ohm termination resistors at the beginning and end units of each chain of
Communicator 2.0 and controllers, ensures reliable communication in RS-485 infrastructures. The
following illustrations show where to install the resistors. Depending on the topology, install the resistors in
the T-box, the terminal controller, or the Munters Repeater.
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Termination Topologies
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Termination Wiring
3.10.4.1 Termination Topologies
Figure 11: Topology 1: Communicator 2.0/House Termination
Figure 12: Topology 2: House Termination
The following two topologies require Munters RS-485 Repeaters.
CAUTION Install the repeater within one meter of the Communicator 2.0 T-Box