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Attaching termination resistors at the ends of the
data line (optional)
If it is not possible to establish a stable connection
with the Modbus subscribers, we recommend ter-
EN
minating both ends of the data line using 120 Ohm
resistors. Terminating the ends will reduce reflec-
tions and increase communication stability. The
need for terminating the ends of wires is dependent
on the installation environment (e. g. cable length,
number of Modbus subscribers). A general specific-
ation regarding the use of termination resistors can
therefore not be provided.
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