Comm-Tec EIB Bedienungsanleitung PDF herunterladen (Seite 5)

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1.4 EIB details when using the Gateway

In principle, the EIB gateway CTG-KNX/IP is a normal EIB device, and can therefore be connected at

any location to the EI bus. Unlike simple actuators or sensors it can be responsible for a large amount

(up to 3000) of group addresses – a normal dimmer for example, just reacts to four addresses.

So one must be very careful to ensure that the gateway has a real chance to react to all bus

telegrams of interest. Especially when using line couplers, solid planning is absolutely necessary. The

following points should be seriously considered:

On the one hand all telegrams should reach the gateway. If line couplers are inserted between

gateway and controlled components, their filter tables are to be programmed in such a way that all

relevant telegrams are really passed through.

On the other hand the EI bus couplers are slow – upon receipt of a telegram, an EIB device needs

some time until the next telegram can be accepted. Especially scene modules can generate a flood

of telegrams, which are transmitted to all actuators participating in the scene.

Because these are usually different devices, the down time of the bus couplers does not matter –

each coupler has enough time to recreate before the next telegram gets received.

The situation with the gateway is different: normally all participating group addresses of a scene are of

interest – the gateway needs a recovery time and can read all telegrams, even with high bus load.

However, with the activation attention has to be paid, that the activated actuators are given enough

time!

CTG-

KNX/IP

CTG-

KNX/IP

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Comm-Tec EIB Bedienungsanleitung Seite 5