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Recommendation
Notes
Zones
For internal use only
Siemens
Building Technologies
All LTE telegrams with zone addresses 1...31 are communicated only within the
line concerned.
Z'addr.
1...31
8.2.4
LTE telegrams via couplers and IP routers
When using Siemens area/line couplers and IP routers together with Synco
devices, we recommend to configure no more than 15 devices with the same
zone (e.g. heat distribution zone) and the same zone address (see the
addresses highlighted in green in Section 8.2.2).
The reason for this recommendation is that the area/line couplers and IP routers
have limited buffers.
The aim is to prevent transmission of too many LTE telegrams (e.g. heat demand
signals from more than 15 devices) in the same cycle.
If it is possible in a given plant to ensure that only a small number of LTE telegrams
is transmitted in the same cycle or that the telegrams are short, it is acceptable to
configure more than 15 devices with the same zone and zone address. However,
observing the recommendation ensures reliable data communication at all times.
The "Block all" filter setting prevents all data communication via the area/line
couplers and IP routers. In this case, the recommendation can be ignored.
The above recommendation does not apply to all zones, only to those listed below
(see table in Section 8.2.2).
Geographical zones
Heat distribution zones
Refrigeration distribution zones
DHW zone
Air distribution zone
Boiler sequencing zone
KNX bus communications
Large plants
Block all
Z'addr.
1...31
Z'addr.
1...31
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CE1P3127en
2013-04-08
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