The island bus expansion modules allow for “decentralized” sub-islands with
TX-I/O-modules, that may be located up to 2 x 200 m from the "local" sub-island.
A programming / parameterization tool is not required.
The DIP switches for the bus master and bus terminator must be set correctly on
the island bus expansion modules.
The island bus expansion is based on differential RS-485 transmission
technology.
"Decentralized" sub-island can be supplied using a separate power supply.
Loss of this power does not impact the island bus of local sub-islands.
For details on wiring and topology, refer to TX-I/O™ engineering and installation
manual, CM110562.
Type summary
Island bus expansion module TXA1.IBE
Ordering
When ordering, please specify the quantity, product name, and type code.
Example:
10 Island bus expansion modules
Full functionality is only possible using
TX-I/O modules from series C and higher
P-bus interface modules series B and higher
PXC-NRUD Series C and higher only (Migration – INTEGRAL AS1000)
All models of PROFINET BIM
Functionality is reduced when using modules for series B and BIM series A: refer
to CM110562.
Number of decentralized sub-islands per I/O island Max. 8
Number of island bus expansion modules per
decentralized sub-island
Exactly 1
Number of I/O modules per I/O island Maximum of 64
Number of I/O modules per sub-island No limit, as long as the
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