ICP DAS USA Modem I 2532 User Manual

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  
the electrical CAN bus signal to fiber optic cables.  
The fiber length between two I-2532s can be up to 1.4km (4593ft), it is  
mainly decided by the cable attenuation of fiber and the CAN bus baud. I-  
2532 is the economic solution for applications which require protecting the  
data transmission from electrical exposure, surges, lightning or chemical  
corrosion. Generally, I-2532 can be used in CANopen, DeviceNet and all  
the other CAN network which follows the ISO 11898-2 standard.  
CAN Device  
CAN Device  
I-2532  
I-2532  
ISO 11898-2  
CAN Device  
Fiber  
ISO 11898-2  
CAN Device  
Up to 1.4 Km  
62.5/125 µm multimode Fiber  
Cable Attenuation of Fiber < 2.8 dB/Km  
This quick-start describes how to implement the I-2532 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-  
2532, please refer to the user manual of I-2532 in the product CD or visit  
our website as follows:  
I-2532 CAN to Fiber Converter Quick Start User Guide (ver. 1.1, 2008/10/03) -----1  
 
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)  
TD LED  
(Green Light)  
RD LED  
(Green Light)  
module  
messages  
messages  
on  
flashing  
off  
flashing  
off  
active  
transmitting  
receiving  
module  
inactive  
no message  
transmitting  
no message  
receiving  
off  
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  
Fiber  
Tx  
Tx  
Rx  
Rx  
Interconnecting  
CAN_GND  
CAN_H  
CAN_GND  
+10VDC ~ +30VDC  
Power GND  
+10VDC ~ +30VDC  
Power GND  
CAN_H  
CAN_L  
CAN_L  
Earth Ground  
Earth Ground  
ISO 11898-2  
ISO 11898-2  
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  
 
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  
4
<1400  
<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]  
500K  
Ideal Bus Length [m]  
< 100  
< 250  
250K  
125K  
< 500  
50K  
20K  
10K  
< 1000  
< 2500  
< 5000  
The definition of segments the relationship between segment length  
(LSEG1, LSEG2 …) and bus length (LBUS) in the same CAN bus system are  
shown in the following figure.  
LBUS = Lseg1 + Lseg2 + Lseg3  
Lseg1  
Lseg2  
Lseg3  
ISO 11898-2  
Fiber  
ISO 11898-2  
I-2532  
I-2532  
When users add one pair of I-2532 into a CAN bus system, the ideal  
bus length will reduce 50 meters because the propagation delay of one I-  
2532 is equal to the propagation delay caused by 25 meters bus length.  
For example, if users use baud 50Kbps and add two I-2532s into the CAN  
network, the ideal bus length should less than 950 meters (1000-  
25*2=950).  
I-2532 CAN to Fiber Converter Quick Start User Guide (ver. 1.1, 2008/10/03) -----4  
 

Graco Inc Paint Sprayer 03695A User Manual
Grundig Car Video System 26 VLE 7101 BF User Manual
Hamilton Beach Blender 840066200 User Manual
Hasbro Games 09015 User Manual
Honeywell Barcode Reader 3580 User Manual
Honeywell Marine Radio MX8 User Manual
Hotpoint Refrigerator HSS22DDM User Manual
HP Hewlett Packard Personal Computer 520 1070 User Manual
Humax Flat Panel Television TV HDCl 2000 User Manual
Image Home Gym 48 User Manual