4
2 Application
The KNX field line coupler (from DIN rail) is used to connect a main KNX-TP line with a secondary KNX-TP
line, providing galvanic insulation between the two.
The device filters the traffic between the two lines (coupler) or forwards packs from the main line to the
secondary one (repeater). The coupler can be used to connect a line to a main line or a main line to a
backbone line.
The device is equipped with:
1. Main line status LED
off
main line error or device not connected to the bus
fixed green
main line functioning
fixed green and red
manual function active
2. Sub line status LED
off
sub line error or line not connected to the bus
fixed green
sub line functioning
3. Main line data traffic status LED
off
no data traffic on the main line
flashing green
data traffic in progress on the main line
flashing red
data transmission error on the main line
4. Sub line data traffic status LED
off
no data traffic on the sub line
flashing green
data traffic in progress on the sub line
flashing red
data transmission error on the sub line
5. Status LED for forwarding telegrams with group addresses
off
different telegram forwarding rules between main and sub line
fixed green
telegram forwarding according to the filter table
fixed green and red
transmit all telegrams
fixed red
block telegrams
6. Status LED for forwarding telegrams with physical addresses
off
different telegram forwarding rules between main and sub line
fixed green
telegram forwarding according to the filter table
fixed green and yellow
transmit all telegrams
fixed yellow
block telegrams
