ICP DAS USA CAN Repeater I-7531 user manual

Summary of the content on the page No. 1

The i-7531 CAN Repeater

Quick Start User Guide
1. Introduction
This user guide describes how to implement the i-7531 module into
users’ applications in a quick and easy way. Therefore, it only provides the
basic concepts. If users want to know more detail information about the i-
7531, please refer to the user manual of i-7531 in the product CD or visit
our website as follow:

http://www.icpdas.com/products/Remote_IO/can_bus/i-7531.htm

The purpose of this document is focused on h

Summary of the content on the page No. 2

2. Hardware Structure CAN Port 2 Frame Ground (CAN) Status LED of Power i-7531 & Communication CAN bus Repeater ‧Support CAN 2.0A/2.0B ‧Photo-isolation: 2500 Vrms ‧Expand the number of CAN buses ‧Mountable on DIN Rail 3000V Isolation (CAN) CAN Port 1 Power Input Frame Ground When the i-7531 is turned on, the status LED will be display with red light. Moreover, when a message passes through i-7531, the status LED will be twinkle once with yellow light while the red light is still on

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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 (120Ω) on CAN Port 1, and the JP3 of i-7531 is used for adjusting terminal resistor on CAN Port 2. Before setting terminal resistor (120Ω) of i-7531, user needs to open the cover of i-7531 first. Those locations of JP2 and JP3 are shown as fo

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CAN Port 2 CAN_GND Earth Ground CAN_H CAN DEVICE CAN_L 5 9 6 1 3 Power CAN Port 1 CAN_L Power GND CAN_H +10VDC ~ +30VDC CAN_GND Earth Ground Note2: Roughly speaking, wiring of CAN_GND and FG can improve the capability of anti-interference of CAN bus system in harsh environment, but this is not necessary. Note3: When users want to calculate the total bus line length, i-7531 need also be considered. According recommended specific line delay 5ns/m, one i-7531 (~200ns delay) should