Industrial
Electronic Devices
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User Manual
J1939 / Modbus Slave
Document code: MN67432_ENG Revision 1.100 Page 9 of 32
LEDS:
The device has got four LEDs that are used to give information of the functioning status.
The various meanings of the LEDs are described in the table below.
LED
Normal Mode
Boot Mode
1: Device state (green)
Blinks slowly (~1Hz)
Blinks quickly:
Boot state
Blinks very slowly (~0.5Hz):
update in progress
2: USB link (yellow)
ON
: USB cable inserted
OFF
: USB cable not inserted
ON
: USB cable inserted
OFF
: USB cable not inserted
3: CAN Communication
(green)
Blinks when J1939 frames are received
Blinks quickly:
Boot state
Blinks very slowly (~0.5Hz):
update in progress
4: RS485 communication
(green)
Blinks when a Modbus request is received
Blinks quickly:
Boot state
Blinks very slowly (~0.5Hz):
update in progress
