Bus termination
The line ends of the bus segment must be equipped with bus termination resistors. These resis-
tors are integrated in the module TA5142-RS485. The pull-up and pull-down settings must also
be made on the circuit board of the module.
1 Termination resistance settings
2 Pull-up and pull-down settings
The configuration is shown in the table below:
Settings on the module State of
LEDs
Internal wiring
diagram
Description
Master at the bus line end,
pull-up and pull-down
activated, bus termination
120 Ω
Option boards > TA5142-RS485 - RS-485 serial adapter non isolated option board
2021/06/293ADR010635, 2, en_US136
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