Installation Guide

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LED
Color
Description
Red
(Steady)
The Bus-Off state, or the auto baudrate
detection is unsuccessful
(Bus-Off state: according to the CAN
definition, when the transmit error count
exceeds 255, a CAN node will enter the
Bus-Off state.)
When the LED is steady red, the
reception/transmission of CAN messages is
not possible.
As there are two possible reasons for this
condition, check the following to recover:
1. Send CAN data/messages from the
connected CAN node to the ICF-1171I,
so the baudrate can be detected by
ICF-1171I.
2. Reset the ICF-1171I by reconnecting
the power input.
If this situation continues to happen, still
check the following:
1. Check if the CAN cables are connected
correctly (CAN high: CAN_H, CAN low:
CAN_L)
2. Check the CAN bus termination
3. Check the status of the connected CAN
devices
4. Check the baudrate settings of the CAN
devices are in the supported range of
ICF-1171I’s baudrate
5. Check possible interference in the
environment
FIBER TX/RX
Green
(Flashing)
The fiber port is transmitting or receiving
CAN data
Off
No communication on fiber
(Fiber) STATE
Green
The fiber signal is detected, and the link is
on
Red
The fiber signal is not detected, or the link
is off