ICP DAS USA I-2532 quick start LED Indicators & Terminal Resistance, Wire Connection

4. LED Indicators & Terminal Resistance

The table below shows the meanings of LED indicators on the I-2532. Transmitting/receiving one message to/from fiber cable will flash the TD/RD LED once. The TD/RD LED may always be turned on if there are a lot of messages transmitted on fiber cable.

POWER LED

(Red Light)

on	module
	active
off	module
	inactive

TD LED

(Green Light)

messages

flashing

transmitting

no message

off

transmitting

RD LED

(Green Light)

messages

flashing

receiving

no message

off

receiving

The switch at bottom of I-2532 is used for adjusting terminal resistance (120￿) on CAN Port. The switch functions are shown below.

Active Inactive

(Enable) (Disable)

5. Wire Connection

Metallic

Board

Interconnecting

Fiber

TxTx

Rx Rx

+10VDC ~ +30VDC

Power GND

Earth Ground

CAN_GND

CAN_H

CAN_L

ISO 11898-2

CAN_GND

CAN_H

CAN_L

ISO 11898-2

+10VDC ~ +30VDC

Power GND

Earth Ground

Roughly speaking, wiring of CAN_GND and FG can improve the capability of anti-interference of CAN bus system, but this is not necessary.

I-2532 CAN to Fiber Converter Quick Start User Guide (ver. 1.1, 2008/10/03) ----- 3