Gateway configuration manual
Profinet Slave/KNX TP – EK-BN1-TP
Revision 1.0.2 - Update: 10/12/2018
Configuration manual
© EKINEX S.p.A. – All rights reserved
Page 17
5.5 KNX communication object configuration
In this section we define communication objects sent or acquired over the KNX network. You can access the
form by pressing the
KNX Access
button in the main form (see Figure 2 – Application program main form).
Figure 9 – KNX Set Access form
The form contains a configurable grid. Each record allows you to assign the properties for each
communication object exchanged over the KNX network. In order to make the management of a significant
number of data easier, after selecting a record it is possible to delete it from the project, insert a new record
in a specific position and perform copy/paste of a previously configured record.
Description of fields in
KNX Set Access
form
Field name
Values
Description
N
Progressive number of the configuration record
Enable
checked
/ unchecked
Configuration record enabling. If a record is disabled, the corresponding
data points will not be acquired or changed over the KNX bus
Source Address
In case of writing frames (field APCI=write) the physical address may
correspond to the physical address of the gateway (
Device ID
field in the
Set Communication
form), in the format Area.Line.Address (each field
must be separated by a dot).
In case of reading frames (field APCI=read),
Source Address
acts as a
filter. Through this field you can acquire datapoints of all lines over the
KNX bus (0.0.0 value) or you can select one specific line (e.g. 4.3.0) or a
single device identified by a specific physical address (e.g. 4.3.1).
Dest/Group
A Group Address (2-level, 3-level or free structure) or a Physical Address
can be set. In case of a group address the fields must be separated
through a “/”, while in case of physical address the separator will be a “.”.
APCI
read / write
The “read” option is used to send a request in order to read a
communication object over the KNX bus. The “write” option must be
selected if you want to change the value of a communication object over
the KNX bus. Other services can be configured by editing the value of the
corresponding service. The name used in the field refers to a 4-bit code
(APCI = Application Layer Protocol Control Information) which defines the
type of service required in KNX communication standard.
Priority
System/ Urgent /
Normal / Low
KNX frames priority. In multicast communication (exchange of frames
from/to group addresses), the default priority is Low.
Format
None / Swap16 /
Swap32 / Swap All /
Int to Float / Float to Int /
Float 16 to Float 32
In case of a frame containing a data (in response to a reading request
frame APCI = read), the Format field determines the data type conversion
from the received frame to the support internal memory area.
In case of a writing frame (APCI = write), the Format field determines the
data type conversion from the support internal memory area to the frame.
Extended
checked
/ unchecked
Enables extended frame format for KNX communication (cEMI = Common
Extended Message Interface)