ICP DAS USA I-7540D - Manual (Page 17)

2.4 LED Indication
The i-7540D provides the Converter function between the Ethernet port and
the RS-232 & RS485 & CAN port. It can handle both 11-bits and 29-bits ID format
according to whether it is a CAN 2.0A or 2.0B. It also provides some LEDs to
indicate to users what situation the i-7540D is in.
2.4.1 Power LED
There is a red indicator-LED in the i-7540D as follow:
— Firmware is running: flashing red
The default shipping of i-7540D will be firmware inside, so the red
indicator-LED of i-7540D will be ON 0.5 second then OFF 0.5 second periodically.
i-7540D CAN-Ethernet Gateway User’s Manual (Version 1.4, April/2008) 17