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20.3.5
IP input module details
20.3.5.1
Behaviour
Upon receipt of
TCP-
based data from a network, the IP input module outputs the incoming data
packet to the logic-sided
Output 0
as soon as the sender ends the connection. Alternatively, for
existing connection, individual values can be output in dependence on user-defined data block
sizes or in dependence on user-defined separators (see below).
Incoming
UDP-
based data packets are immediately output to the logic-sided
Output 0
.
The data type of the incoming data is automatically converted to the set KNX-conform data type
and finally, as with the
KNX input module
, converted to an internal data type. If errors occur, the
value 1 is output on the logic-sided
Output 1
(logical "true").
20.3.5.2
Extended settings
Via the
Protocol
parameter, you can specify whether
TCP-
or
UDP-
based data
shall be received.
Via the
Port No.
parameter, you can specify on which port data shall be recei-
ved.
Via the
Limit type
parameter, you can manually specify, in the case of a TCP-
based communication, the point in time of the output on
Output 0
:
o
Select
Symbol
as limit type. In this way, you can specify characters in he-
xadecimal notation (e.g. 0x01)
Limit bytes
. If these characters are recei-
ved, the IP input module outputs the data of the current data block.
o
Select
Block
as limit type. In this way, you can specify under
Block size
the number of characters (in bytes) that belong to a data block. If this
number of characters are received, the IP input module outputs the re-
ceived data as data block.
Using the
Preamble block size
and
Postambel block size
parameters, you can
specify by how many bytes a received data package shall be truncated:
o
For UDP at the beginning and end of every UDP data package.
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