I-2532 CAN to Fiber Converter User Manual (ver. 1.1, 2008/10/03) ------7
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.
Table 2-1 Pin Assignment
Port
Name
Description
CAN_L
CAN_Low, signal line of CAN Port.
CAN_H
CAN_High, signal line of CAN Port.
CAN
CAN_GND CAN_Ground, ground voltage level of CAN Port.
TXD
Transmit optic data.
Fiber
RXD
Receive optic data.
+VS
Voltage Source Input. +10V
DC
~ +30V V
DC
.
GND
Power Ground.
Power
F.G.
Frame Ground.
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.
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