ZMCoup RF 868 / 915
Technical Support:
10
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
secondary 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 7). If so, then the line coupler will let it pass. Otherwise, it
won’t be transferred to the secondary line. The same would also apply to the
inverse case (a telegram originating in the secondary line).
Figure 7 ETS Option to Force Passing a Group Address through the Line Coupler
Physical address filtering
: when the device 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 coupler with address 3.2.0
reads a telegram on the mainline destined to a device with individual address
3.1.2, it will compare both addresses and conclude that 3.1.2 does not belong
to the secondary line, and therefore not transmit it.