IntesisBox IBOX-MBS-KNX-100 User Manual page 11

Modbus Server – KNX
®
IntesisBox
devices on bus start-up or recovery – in this way, the device gets the latest value of the
group addresses it has associated right from its start-up.
Each datapoint defined in IntesisBox KNX configuration needs to have at least a single KNX
group address associated with it. This group address will be used either for sending updates
to KNX of the datapoint value (that have been generated on the other Modbus TCP & RTU
interface of the IntesisBox), or receiving updates from KNX of the datapoint value (that will
be propagated to the Modbus TCP & RTU side in this case)
From the point of view of KNX functionality, each datapoint of IntesisBox can hold following
group address associations:
 A single KNX group address with which update/write telegrams will be sent,
whenever the datapoint changes (as a result of a change coming from the other
interface of IntesisBox, Modbus TCP & RTU in this case).
 One or more KNX group addresses from which this datapoint of IntesisBox will be
updated/written from the KNX installation (resulting in a change to the other side of
IntesisBox, Modbus TCP & RTU in this case).
 A single KNX group address from which IntesisBox will read the object value on KNX
bus recovery / IntesisBox start-up.
Behavior of IntesisBox' datapoints with regard to their associated group addresses is
defined by means of flags (R, W, T, U and U2), explained in section 5.1.2.
Additional to the binding aspect commented above, it is also important to notice that each
KNX communication object has a defined EIS type. The EIS type of a communication object
defines the bit length and coding of the data it represents. Communication objects
associated by means of a group address need to match the same EIS type, in order to
communicate consistently.
So, at configuration time it is required that for each datapoint configured on IntesisBox an
EIS type is defined. Datapoints on IntesisBox Modbus support the following EIS-types:
 EIS1 - Switching (1bit raw)
 EIS2 - Dimming (4bit raw)
 EIS5 – Value (16bit – floating type)
 EIS6 – Scaling (8bit – scaled 0%-100% in values 0-255)
 EIS7 – Drive Control (1bit raw)
 EIS8 – Priority (2bit raw)
 EIS9 – IEEE 754 float (32bit – floating type)
 EIS10 – 16bit Counter (16bit raw)
 EIS11 – 32bit Counter (32bit raw)
 EIS13 – ASCII char (8bit raw)
 EIS14 – 8bit Counter (8bit raw)
ETS3 or ETS4 software tools are not used to configure IntesisBox. Though, it's typical that
the choice of which KNX group addresses to use is restricted or defined by an ETS-based
project. If that's the case, the KNX installer/integrator needs to provide the set of group
addresses prior to doing the configuration of datapoints in LinkBoxMB.
Also, a dummy ETS application is provided by Intesis Software (section 6), which can be
imported into ETS. This application is nor downloadable into IntesisBox Modbus neither
usable for IntesisBox configuration. Rather, it poses as a means of having a device in the
ETS project representing the IntesisBox Modbus and its own datapoints/communication
objects, and to which group addresses are associated.
© Intesis Software S.L.U. - All rights reserved
This information is subject to change without notice
IntesisBox ® is a registered trademark of Intesis Software SLU
User's Manual r18 eng
URL http://www.intesisbox.com
Email info@intesisbox.com
tel +34 938047134
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