ABB i-bus
®
KNX
Product overview
12 9AKK108467A5941 Rev. B | MG/S 11.100.1.1 | EN | Product Manual
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3.5.3
Operating controls and display elements
Operating control/LED
Description/function
Display
KNX programming button/LED
Assignment of the physical address
LED on: Device in programming mode
LED flashing: Visual localization of the
device
DIP switch
Switching:
Position 1:
•
ON: 120 Ohm termination active
•
OFF: 120 Ohm termination inactive
(default)
Positions 2 and 3:
•
ON: Polarization active (default)
•
OFF: Polarization inactive
ON: DIP switch x set to ON position
OFF: DIP switch x set to OFF position
Power/Modbus activity LED
OFF: Device switched off
ON: Device switched on without
communication
Slow flashing: Invalid response or no response
received from a server
Fast flashing: Valid telegram received from the
configured server
Tab. 4: Operating controls and display elements
Note
When you install the gateway at one end of the RS-485 bus, you activate the termination resistor function
by setting DIP switch 1 to the ON position. The RS-485 bus only permits two termination resistors.
Note
The bus must only be polarized at one point on the line, preferably on the client side. To deactivate the
gateway's line polarization, switches 2 and 3 must be in the OFF position.
1 2 3
ON
