Specifications

Introduction
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31004624 8/2009
Extension Segments
When you are using a standard NIM, Advantys STB I/O modules that do not reside
in the primary segment can be installed in extension segments. Extension segments
are optional segments that enable an island to be a truly distributed I/O system. The
island bus can support as many as six extension segments.
Special extension modules and extension cables are used to connect segments in
a series. The extension modules are:
z STB XBE 1100 EOS module: the last module in a segment if the island bus is
extended
z STB XBE 1300 BOS module: the first module in an extension segment
The BOS module has a built-in 24-to-5 VDC power supply similar to the NIM. The
BOS power supply also provides logic power to the STB I/O modules in an extension
segment.
Extension modules are connected by lengths of STB XCA 100x cable that extend
the island communication bus from the previous segment to the next BOS module:
1 primary segment
2 NIM
3 STB XBE 1100 EOS bus extension module(s)
4 1 m length STB XCA 1002 bus extension cable
5 first extension segment
6 STB XBE 1300 BOS bus extension module for the first extension segment
7 4.5 m length STB XCA 1003 bus extension cable
8 second extension segment
9 STB XBE 1300 BOS bus extension module for the second extension segment
10 STB XMP 1100 termination plate
Bus extension cables are available in various lengths, ranging from 0.3 m (1 ft) to
14.0 m (45.9 ft).