Manual do usuário ICP DAS USA I-2532

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The I-2532 CAN to Fiber Converter

Quick Start User Guide
1. Introduction
Fiber optic transmission medium is a good material to protect data
transmission from EMI/RFI interference and has been used in harsh
environment extensively. CAN bus is famous in industrial application.
More and more users build CAN networks to communicate their
controllers, sensors and actuators. In order to solve the problem between
different transmission medium, I-2532 is specially designed for converting
t

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2. Appearance The following figure is the appearance of the I-2532. Front View Bottom View POWER LED Indicators TD RD TxD Fiber Port RxD Connector Type: ST Operating Wavelength: 850nm Fiber Type: 1 F.G. Multi-Mode, 62.5/125μm 2 N/A 3 GND 4 +VS 5 T.R. CAN_L CAN Port 6 active CAN_H 7 T.R. CAN_GND inactive 8 ISO 11898-2 standard Power Port +10 ~ +30VDC between Terminal Resistance Switch GND and +VS 3. Pin Assignment Port Name Description CAN_L CAN_Low, signal line of CAN Port.

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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 TD LED RD LED (Red Light) (Green Light) (Green Light) module messages messages on flashing flashing active transmitting receiving module no message no message off off off inacti

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6. Bus Length & Fiber Length Higher attenuation of fiber will reduce the transmission distance. Users can use following table to know the relationship between those two. Attenuation [dB/km] Ideal Fiber Length [m] 2.8 <1400 4 <400 The limitation of baud on a CAN network is restricted by propagation delay. On the other hand, long bus length leads to long propagation delay. The relationship between baud and bus length is displayed below. Baud [bit/sec] Ideal Bus Length [m] 500K <