ICP DAS USA I-7531 quick start Terminator Resistor Setting, Configuration Installation

3.Terminator Resistor Setting

According to the ISO 11898 specifications, the CAN bus network must be terminated by one terminal resistor on each end of CAN bus for proper operation.

The JP2 of i-7531 is used for adjusting terminal resistor (120 ) on CAN Port 1, and the JP3 of i-7531 is used for adjusting terminal resistor on CAN Port 2.

Before setting terminal resistor (120 ) of i-7531, user needs to open the cover of i-7531 first. Those locations of JP2 and JP3 are shown as following figure:

The following connection statuses present the condition if the terminal resistor is enabled (default) or disabled.

Disable Enable

(Deactivate) (Activate)

4.Configuration Installation

Step1: Modify JP2 and JP3 of i-7531 according to user’s application.

Step2: Connect two different CAN buses using i-7531 as follow figure:

i-7531 CAN Repeater Quick Start User Guide (ver. 1.3, 2008/03/25) ----- 3