Cgeib-Ip Setup; Operations & Installation Guide – Doc - Crestron CGEIB-IP Operations & Installation Manual

Crestron CGEIB-IP
Operations & Installation Guide – DOC. 0009

CGEIB-IP Setup

As described above (1. Functional Description), a Crestron CGEIB-IP can be setup
to communicate with other KNX units based on Group Addresses.
When using Group Addresses the Crestron programmer needs to know how the
KNX installation has been programmed exactly. He/she needs to know which KNX
objects are programmed on which Group Addresses so that the Crestron CGEIB-IP
can then directly control those Group Addresses.
With Group Address oriented programming, since an object (e.g. the state of a lamp)
can be set by multiple Group Addresses the Crestron processor might need to
monitor multiple Group Addresses to decide on the state of an object.
KNX-units send information over the network which contains the following:

Hardware Address from the transmitting unit.

Group Address of the function that has to be controlled.

Data that will trigger the function.
In Group Address oriented programming, the hardware addresses are not important
for Crestron, the Group Addresses and expected data format however are. The
installer uses the Group Addresses to define what functions can be controlled by the
KNX installation. For example every controllable light zone will have at least one.
By sending a value to this address the particular function will be triggered. E.g.
sending the value 0 to this address will result in the light switching off. A group
address list shows the Crestron programmer which functions are possible and how
they can be triggered.
Extra to every group address you have information about the data - type, meaning the
format of the expected data. The type is specified by the number of bits used; the
general types are 1, 4, 8, 16, 24 or 32 Bit. The KNX installer can produce the group-
list with the ETS projection software.
This is an example of a series of Group Addresses to control two dimmers. Each
dimmer is controlled using three different Group Addresses: one for switching, one
for dimming and one for setting the value.
The group addresses themselves exist out of three numbers divided by a forward
slash, e.g. 1/0/13. The data types in this example are 1 bit (switching), 4 bit
(dimming) and 1 byte (absolute value).
The ETS software can be set to use either "triple" Group Addresses (e.g. 0/1/0) or
"double" group addresses (e.g. 0/15).
The possible values of the "triple" group addresses are: HG/MG/UG
 HG: 0..15
 MG: 0..7
 UG: 0..255
KNX Control Interface
KNX/EIB Control Interface: Crestron CGEIB-IP  9