![ADF Web HD67939-B2 User Manual Download Page 9](http://html1.mh-extra.com/html/adf-web/hd67939-b2/hd67939-b2_user-manual_2851115009.webp)
Industrial
Electronic Devices
ADFweb.com S.r.l.
User Manual
CAN / MQTT
Document code: MN67939_ENG Revision 1.000 Page 9 of 32
LEDS:
The device has got five 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: CAN communication
(yellow)
Blinks when CAN communication is running
Blinks quickly:
Boot state
Blinks very slowly (~0.5Hz):
update in progress
3: MQTT status (yellow)
ON:
MQTT not connected
OFF:
MQTT connected
Blinking:
MQTT communication
Blinks quickly:
Boot state
Blinks very slowly (~0.5Hz):
update in progress
4: Not used (yellow)
OFF
Blinks quickly:
Boot state
Blinks very slowly (~0.5Hz):
update in progress
5: Ethernet Link (green)
ON:
Ethernet cable connected
OFF:
Ethernet cable disconnected
ON:
Ethernet cable connected
OFF:
Ethernet cable disconnected