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SETECNA
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Rev. 01
Alessandro
Page: 6 di 10
14/09/2016
23/09/16 17.56
Gateway MODBUS-to-Opentherm MB-OTG
Technical manual
3.2
LED Meaning and Functions
On the Gateway’s front panel there are some leds that show the functioning state of the device.
LED
STATUS
MEANING
BUS
(green)
ON
Gateway correctly Powered
BUS
(green)
Blinking
Writing/Reading data correctly transmitted to the Master MODBUS
O/T
(orange)
Blinking
Boiler communicates correctly with the Gateway
NOTE: We remember that the blinking of the “BUS” LED happens only if data is correctly
received/transmitted by Gateway, therefore if the data transmission between Gateway and Master
rarely happens, the blinking of the LED will rarely happen too; therefore if the Master frequently
exchanges data with the Gateway, the “BUS” led will be always on.
