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2.3 Pin Assignment
The pin assignment of CAN port, fiber port and power connector of the
I-2532 are shown in the following tables.
Port
Name
CAN_L
CAN
CAN_H
CAN_GND
TXD
Fiber
RXD
+VS
Power
GND
F.G.
Sometimes, the CAN_GND voltage level of different CAN devices on a
CAN bus system are not equal. In this case, it could cause some problems and
derogate the system stability. There is one way to relieve this situation; users
can connect the CAN_GND of different CAN devices each other to balance the
voltage level of CAN_GND.
Electronic circuits are always influenced by different levels of
Electro-Static Discharge (ESD), which become worse in a continental climate
area. F.G. provides a path for conducting the ESD to the earth ground.
Therefore, connecting the F.G correctly can enhance the capability of the ESD
protection and improve the module's reliability.
Wiring of CAN_GND and F.G. is not necessary; users can modify the
configuration of wiring according to real applications.
I-2532 CAN to Fiber Converter User Manual (ver. 1.1, 2008/10/03) ------7
Table 2-1 Pin Assignment
Description
CAN_Low, signal line of CAN Port.
CAN_High, signal line of CAN Port.
CAN_Ground, ground voltage level of CAN Port.
Transmit optic data.
Receive optic data.
Voltage Source Input. +10V
Power Ground.
Frame Ground.
~ +30V V
.
DC
DC
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