Led Indication; Power Led; Can Bus Indicator Led - ICP DAS USA I-7540D User Manual

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.
2.4.2

CAN bus indicator LED

The I-7540D includes three single-color LED displays to indicate the status of
module, network and I/O device. They are ER LED (it is red), TX LED (it is green),
and RX LED (it is red). The Indicators assist maintenance personnel in quickly
identifying a problem unit. The LED test is to be performed at power–up. When
the CAN communication events occur, these indicators will be triggered to glitter
with different conditions.

ER LED
This LED provides device status and indicates whether or not the device is
operating properly. Table 2-6 shows the conditions of ER status. Therefore, when
the device is operated normally, the ER-LED must be turned off.
red, users can use the "99S" command, in section 4.5, to read the status of the
I-7540D.
Condition
Off
Red
Flashing red Device has recoverable fault.
I-7540D CAN-Ethernet Gateway User's Manual (Version 1.8, March/2021)
Table 2-6 ER-LED conditions
Description
Device is normal; no error occurs
Device has unrecoverable fault
To recover:
Reset device or perform error recovery
If this led flashing
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