IntesisBox
®
KNX – FUJITSU VRF
User Manual r1.0 EN
7/30
This information is subject to change without prior notice
IntesisBox is a registered trademark of Intesis Software S.L.U.
web: www.intesisbox.com
phone: +34 938047134
2 KNX System
In this section, a common description for all IntesisBox KNX series gateways is given, from the point of view of KNX
system which is called from now on internal system. Connection with the Fujitsu system is also called from now on
external system.
Description
IntesisBox KNX connects directly to the KNX TP-1 bus and performs as one more device into the KNX system, with the
same configuration and operational characteristics as other KNX devices.
Internally, the circuit part connected to the KNX bus is opto-isolated from the rest of the electronics.
IntesisBox KNX receives, manages and sends all the telegrams related to its configuration to the KNX bus.
On receiving WRITE telegrams of KNX group addresses associated to communication objects, the corresponding
messages are sent to the external system (Fujitsu installation).
When a change in a signal of the external system is detected, a WRITE telegram is sent to the KNX bus (addressed
with the group address associated to the corresponding group object), in order to maintain both systems synchronized
in every moment.
The status of the KNX bus is checked continuously and, if a bus drop-down is detected, for example due to failure in
the bus power supply, after the KNX bus is restored again, IntesisBox will send READ telegrams to group addresses of
all communication objects marked with flag ‘Ri’. The behavior of each individual point into IntesisBox is determined by
the flags configured for the communication object. See details below.
Points definition
Every group object in configuration has following KNX properties:
Propert
Description
Description Descriptive information about the communication ob
ect or si
nal.
Object
function
Information on range of values for the group object.
DPT Datapoint type. It is the KNX data type used to encode the signal's value. It will depend
on the t
pe of si
nal associated in the external s
stem in ever
case.
Group It is the KNX group to which the point is associated. It is also the group to which the
read (R), write (W), transmit (T), update (U) and read on init (Ri) flags are applied. It is
the sendin
roup.
Listening
addresses
They are the addresses that can write on the group object, a part of the main group
address.
R Read. If this fla
is activated, READ tele
rams of this
roup address will be accepted.
Ri Read on Init. If this flag is activated, the object will trigger corresponding READ request
on associated
roup address
on initialization.
Write. If this fla
is activated, WRITE tele
rams on this
roup ob
ect will be accepted.
T Transmit. If this flag is activated, when the group object value changes, due to a change
in the external system, a WRITE telegram of the associated group address will be sent
to the KNX bus.
U Update. If this flag is activated, UPDATE telegrams (response to READ telegrams) on
this
roup ob
ect will be accepted.
Active If activated, the point will be active in IntesisBox, if not, the behavior will be as if the
point is not defined. This allows deactivating points without the need of delete them for
possible future use.
