2.6. Terminator Resistor Setup
In order to minimize the reflection effects on the CAN Bus line, the CAN Bus line
has to be terminated at both ends by two terminator resistors as in the following figure.
According to the ISO 11898-2 spec, each terminator resistor is 120
Ω
(or between
108
Ω
~132
Ω
). The bus topology and the positions of these terminator resistors are
shown as following figure.
Figure 2.8 CAN Bus network topology
Each CAN-Logger series includes one build-in 120
Ω
terminator resistor, users can
decide if it is enabled or not. The DIP switch for terminator resistor is under the top side.
Figure 2-9 Location of Terminator Resistor DIP Switch of CAN-Logger100
Figure 2-10 Location of Terminator Resistor DIP Switch of CAN-Logger200
CAN-Logger series CAN Bus data logger devices User Manual (version 1.0.1)
Page: 14
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