5
vacon • 37
Control unit
5.1.7
Bus termination of the RS485 connection
This dip switch is related to the RS485 connection. It’s used for bus termination. The bus ter-
mination must be set to the first and to the last device on the network. This switch in position
“0” means that a termination resistor of 120 ohm is connected and the termination of the bus
has been set. This switch in the position “1” means that a pull-up and a pull-down resistors of
10 kOhm have been connected for biasing purpose. The switch in the position “2” means no ter-
mination and no biasing resistors have been connected. Factory default is 2. See Figure 27.
Figure 27. RS485 dip switch.
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Содержание 100X series
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