Zennio Linecoupler CL User manual

Linecoupler CL
KNX-TP Line Coupler & Repeater
ZSYLCCL
USER MANUAL
Application Program version: [1.0]
User Manual version: [1.0]_a
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Linecoupler CL
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CONTENTS
Contents........................................................................................................................................ 2
1 Introduction .......................................................................................................................... 3
1.1 Linecoupler CL............................................................................................................... 3
1.2 Installation..................................................................................................................... 5
2 Configuration......................................................................................................................... 6
2.1 General Configuration................................................................................................... 6
2.1.1 Linecoupler CL as a Line Coupler....................................................................... 6
2.1.2 Linecoupler CL as a Repeater .......................................................................... 10
2.2 Manual Function Button ............................................................................................. 11
2.2.1 Manual Operation Mode................................................................................. 11
2.2.2 Hard Reset to Factory Defaults ....................................................................... 12
3 ETS Parameterisation (Linecoupler).................................................................................... 13
3.1 Default Parameterisation............................................................................................ 13
3.2 General........................................................................................................................ 14
3.3 Main Line..................................................................................................................... 15
3.4 Line.............................................................................................................................. 17
4 ETS Parameterisation (Linerepeater).................................................................................. 18
4.1 Default Parameterisation............................................................................................ 18
4.2 General........................................................................................................................ 19
4.3 Main Line..................................................................................................................... 19
4.4 Line.............................................................................................................................. 21

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1INTRODUCTION
1.1 LINECOUPLER CL
Linecoupler CL is the KNX line-coupling and line-repeating solution from Zennio.
This device is intended to couple two KNX twisted-pair lines together. Its flexibility
makes it possible to connect a KNX line to a KNX mainline or a KNX mainline to a KNX
backbone line (line coupler mode), or to simply link together two line segments (line
repeater mode).
Figure 1 Context (Topology)
These are the most outstanding features of the device:
Low Power Consumption.
Galvanic Insulation of the connected lines.
Traffic Filtering according to the project topology and to the built-in address
table.
Telegram Dropping.
Blockage of Device-Configuration Telegrams (telegrams destined to
physical addresses).
Support for Long Messages (up to 250 bytes).

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Customizable Pushbutton for triggering the manual mode, useful at runtime
and for set-up and troubleshooting purposes.
6 Lighting Indicators (LEDs) for accurately showing the bus status of each
line, making the detection of abnormal situations (excessive bus load,
message retransmissions, etc.) easier.
Two alternative application programs permit configuring the device as a Line
Coupler or as a Repeater.

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1.2 INSTALLATION
Figure 2 Element Diagram
As shown in Figure 2 each of the two KNX lines to be coupled must be connected to
one of the two KNX bus connectors available (6, 11). After the connection, the line
coupler can be conveniently mounted on the DIN rail by the usual procedure.
This device does not need any external power supply since it is entirely powered
through the main KNX bus (6).
Note: each line (or line segment) being coupled requires a dedicated power supply. No
power pass from one line to another is performed.
The programming button (10) shown in Figure 2 may be pressed to set Linecoupler CL
in programming mode. After a short press, the programming LED will light in red.
The behaviour of the additional LEDs and the manual function button will be described
in section 2.2.
For detailed information about the technical features of Linecoupler CL, as well as
information on security and on the installation process, please refer to the Datasheet
included within the original packaging of the device and also available at
http://www.zennio.com.
1. Main line status LED.
2. Main line traffic LED.
3. Group address filter status LED.
4. Manual function button.
5. Programming LED.
6. Main line KNX connector.
7. Secondary line status LED.
8. Secondary line traffic LED.
9. Physical address filter status LED.
10.Programming button.
11.Secondary line KNX connector.
6
11
10
5
9
8
7
4
3
2
1

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2CONFIGURATION
2.1 GENERAL CONFIGURATION
Linecoupler CL can be used as a line coupler (for coupling both a line to a mainline, or
a mainline to a backbone line; the latter is normally referred to as “backbone coupler”)
or as a repeater (for coupling two line segments). A different application program is
provided for each purpose.
2.1.1 LINECOUPLER CL AS A LINE COUPLER
Figure 1 shows a typical scenario where Linecoupler CL can be installed. As a line
coupler, the device may perform line coupling in the nodes marked as “LC”, where a
line connects to a mainline or a mainline connects to a backbone line. In both cases,
Linecoupler CL offers an insulated coupling interface with the possibility of filtering the
traffic according to the topology in the installation or to group-oriented criteria. In other
words, Linecoupler CL will (or will not) let telegrams pass from one line to the other
according to the parameterisation.
Another scenario is shown in Figure 3.
Figure 3 Line Coupling Scenario
Note: the individual address of a line coupler needs to be of the form X.Y.0 (or X.0.0 in
the case of working as a backbone coupler).
3.0.0
4.0.0
3.1.0
4.1.0
4.2.0
3.2.0
4.2.1
3.2.1
4.1.1
4.1.2
3.1.1
3.1.2
4.0.1
3.0.1

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Regarding telegram filtering, the line coupler implements two complementary (and
optional) filters:
Group address filtering: ETS automatically generates a group address table
for the project loaded. This table is transferred to the line coupler during
application program downloads. When a telegram containing a group address
in the “destination address” field arrives, the line coupler will look up if such
address exists in the group table, and eventually transmit the telegram to the
other side –if the address is found–or drop (block) it –if it is not–.
Note: making further changes to a project (addresses, etc.) requires downloading
the updated filter table to the line coupler.
Example: if the line coupler has been parameterised to filter group addresses
from both lines, when it receives a telegram from the mainline destined to a group
address (e.g., 2/5/13) it will check that there is a device in the line with objects
that have been assigned such group address (or that such address has at least
been marked in ETS to pass through the line coupler; see Figure 4). If so, then
the line coupler will let it pass. Otherwise, it won’t be transferred to the line. The
same would also apply to the inverse case (a telegram originating in the line).
Figure 4 ETS Option to Force Passing a Group Address through the Line Coupler.

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Physical address filtering: when the line coupler receives a telegram where
the destination address is a physical/individual address (for example, during
downloads), it will compare such address with its own physical address (no
particular filter table is required for physical address filtering, but a simple
comparison). The physical address of the line coupler determines the line it
belongs to, which then, and according to the parameterisation, determines if
the telegram will be routed or eventually dropped (blocked). This can be
parameterised separately for the mainline and for the line.
Example: in the example shown in Figure 3, if the line coupler with address 3.2.0
reads a telegram on the mainline destined to the device with physical address
3.1.2, it will compare both addresses and conclude that 3.1.2 is not an address
belonging to its line and will therefore not transmit it to its secondary line.
Note: the device that sends a telegram needs to have been assigned a physical
address that really corresponds to its line. In Figure 3, if the device with address
3.1.1 (let it be a KNX programmer, for instance) changes its address to 7.7.255, it
will not be able to send telegrams to, for example, the device with address 4.0.1.
For their part, the LED lights on the top of the device make it easy to monitor the status
of the buses and to detect typical communication problems, as detailed next.
Figure 5 LEDs

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Mainline Status LED: shows the status of the primary bus.
➢OFF = error: mainline not connected or not powered
➢ON (green) = OK.
➢ON (orange) = manual function in execution.
Line Bus Status LED: shows the status of the secondary bus.
➢OFF = error or secondary line not connected.
➢ON (green) = OK
Mainline Traffic LED: shows the traffic status in the primary bus.
➢BLINKING (green) = traffic.
➢OFF = no traffic.
➢BLINKING (red) = errors in the transmissions.
Line Traffic LED: shows the traffic status in the secondary bus.
➢BLINKING (green) = traffic.
➢OFF = no traffic.
➢BLINKING (red) = errors in the transmissions.
Group Address (GA) Filter Status LED: shows the current configuration of
the group address routing:
➢OFF = different routing for the main and the secondary lines.
➢ON (green) = filtering active.
➢ON (orange) = all group addresses routed.
➢ON (red) = routing blocked.
Physical Address (PA) Filter Status LED: shows the current configuration
of the individual address routing:

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➢OFF = different routing for the main and the secondary lines.
➢ON (green) = filtering active.
➢ON (orange) = all individual addresses routed.
➢ON (red) = routing blocked.
Please refer to section 3 for a detailed explanation of the different behaviours and
parameterisations of the line coupler application program.
2.1.2 LINECOUPLER CL AS A REPEATER
Figure 1 also includes a particular case where a repeater (marked as “LR”) is required:
two separate line segments (one of which with no other connection to the installation, in
order to prevent forbidden situations such as in Figure 6), both containing devices,
need to be linked for extending the line. Linecoupler CL offers such linking interface,
with proper electrical insulation for the connections.
Figure 6 Forbidden Situation: Segment with Two Connections to the Bus
Line repeaters do not implement filter tables. As the name suggests, any telegram
on one of the buses will be repeated to the other bus. It is therefore irrelevant whether
the telegram originates on one side or another and whether it is destined to one side or
another: both segments melt together. Therefore, the Linerepeater application program
will only let transmitting or dropping every telegram destined to physical addresses,
while no drop or filter options are provided for those destined to group addresses.
3.0.0
3.3.0
3.3.42
3.3.43
3.3.44
3.3.45
3.3.46
3.3.47
3.3.49
3.3.48
3.3.41