Bes Ingenium IPR-K BD930000, Руководство по программированию, Страница: 7 / 17

BD930000
- IPR-K
Programming manual
v1.0
www.besknx.com
7
5 IP-TP lines interface
The IPR-K can be used as an area or line coupler, depending on its location in the project. It is used as an area coupler when
the middle of the backbone line is Ethernet (IP) and the line is twisted pair (TP). To couple lines, the same criteria is used,
being the main line Ethernet type.
Regardless of the case for which it is used, telegrams can be filtered with the IPR-K. For filtering of group addresses, a table
is generated which is downloaded to the device when doing a full download. This table allows the IP router, in its operation
as a coupler, to block telegrams with destination addresses contemplated in its address table. This table, as has been said
before, is downloaded to the device in a complete download, so any changes in the project must be updated by this means
in the IPR-K. If the device is configured for group address filtering in both directions, the IPR-K will check if the received group
address is linked to some communication object on the other line or if in the properties of the group address in The ETS has
indicated the option to Pass Through the Line Coupler. In these cases, the IPR-K will pass the telegram.
In order to filter telegrams whose destination are physical addresses, the address table is not used, but the IPR-K will compare
the destination address of the telegram with its own and thus determine if it should pass the telegram or carry out its filtering.