Termination Resistor - ABB SACE Emax E1.2 Operating Instructions For The Design Engineer

ABB | SACE Emax 2
Termination resistor The modules provide the possibility to insert a 120 Ω termination resistor on the RS-485 bus, by setting the
dip-switches Rterm on the side of the modules, in position on. This option must be selected before the
installation of the modules.
For the positions on and off of the dip-switches Rterm, see the following figure (on Modbus RTU
communication modules, the dip-switches Rpol are not used).
ON
1 2 3 4
Figure 36
209 | © 2017 ABB | 1SDH001330R0002 - ECN000058721 Rev. A Electronic accessories | 7 - Ekip Com Modbus RTU modules