Specifications

Bases
396
31007715 6/2008
The Label Tab A label can be positioned on the tab shown above in item 1. The label helps identify
the specific module that will reside at this base unit’s island bus location. A similar
label can be placed on the module itself so that they can be matched up properly
during the island installation.
Labels are provided on an STB XMP 6700 marking label sheet, which can be
ordered from your Schneider Electric service provider.
The Island
Bus Contacts
The six contacts located in a column at the top of the I/O base provide logic power
and island bus communications connections between the module and the island
bus:
In the primary segment of the island bus, the signals that make these contacts come
from the NIM. In extension segments, these signals come from an STB XBE 1000
BOS extension module:
Contacts Signals
1 not used
2 the common ground contact
3 the 5 VDC logic power signal generated by the power supply in either the NIM
(in the primary segment) or a BOS module (in an extension segment)
4 and 5 used for communications across the island bus between the I/O and the NIM—
contact 4 is positive (+ve), and contact 5 is negative (-ve).
6 connects the module in the base to the island’s address line. The NIM uses the
address line to validate that the expected module is located at each physical
address.
1
2
3
4
5
6
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