Intesis
Box
®
ASCII Server
– KNX
User Manual r1.0 EN
© Intesis Software S.L.U. - All rights reserved
IntesisBox
is a registered trademark of Intesis Software SLU
7/20
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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
The Modbus system is also called from now on
external system
.
2.1 Description
IntesisBox KNX connects directly to the KNX TP-1 (EIB) bus and behaves as one more devices 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 telegrams of KNX Groups associated to internal datapoints, the corresponding messages are sent to the
external system (Modbus) to maintain both systems synchronised in every moment.
When a change in a signal of the external system is detected, a telegram is sent to the KNX bus (of the associated KNX
group) to maintain both systems synchronised in every moment.
The status of the KNX bus is checked continuously and, if a bus drops down is detected, due to a failure in the bus
power supply for example, when the KNX bus is restored again, IntesisBox will retransmit the status of all the KNX
groups marked as
"T" Transmit
. Also, the
Updates
of the groups marked as
"U" Update
will be performed. The behaviour
of each individual point into IntesisBox is determined by the flags configured for the point. See details in section 4.
2.2 Points definition
Every internal datapoint to define has the following KNX properties:
Property
Description
Description
Descriptive information about the Communication Object or Signal.
Signal
Signal's Description. Only for informative purposes, allows identifying the signal
comfortably.
DPT
It is the KNX data type used to code the signal's value. It will depend on the type of
signal associated in the external system in every case. In some integrations, it is
selectable, in others it is fixed due to the intrinsic characteristics of the signal.
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) and update (U) flags are applied. Is the sending group.
Listening
addresses
They are the addresses that will actuate on the point, apart of the main Group address.
R
Read. If this flag is activated, read telegrams of this group address will be accepted.
Ri
Read. It this flag is activated, the object will be read on initialization.
W
Write. If this flag is activated, write telegrams of this group address will be accepted.
T
Transmit. If this flag is activated, when the point's value changes, due to a change in
the external system, a write telegram of the group address will be sent to the KNX bus.
U
Update. If this flag is activated, on IntesisBox start-up or after a KNX bus reset detection,
objects will be updated from KNX.
Active
If activated, the point will be active in IntesisBox, if not, the behaviour will be as if the
point is not defined. This allows deactivating points without the need of delete them for
possible future use.
These properties are common for all IntesisBox KNX series gateways. Although each integration may have specific
properties according to the type of signals of the external system.
