Process Image
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753-646 KNX/EIB/TP1 Module
Manual
Version 1.2.0
5
Process Image
Using the KNX module, a 24-byte input and output process image can be
transferred to the controller via a logical channel. Two status bytes and two
control bytes provide the control of the data flow. The byte length of solely KNX
telegrams varies between 7-byte minimum and 64-byte maximum (typical length
is 7-byte to 24-byte). Furthermore, the local bus communication offers 24-byte
maximum for each module bus telegram, of which 14-byte can be used for KNX
telegrams.
In device mode, access to the KNX data can only be performed via special
function blocks of the IEC application. Configuration using the ETS engineering
tool software is not required for KNX.