Specifications

Theory of Operation
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Preferred
Modules
A preferred module is a device from another Schneider catalog, or potentially from
a third-party developer, that fully complies with the Advantys STB island bus
protocol. Preferred modules are developed and qualified under agreement with
Schneider; they conform fully to Advantys STB standards and are auto-addressable.
For the most part, the island bus handles a preferred module as it does standard
Advantys STB I/O module, with four key differences:
z A preferred module is not designed in the standard form factor of an Advantys
STB module and does not fit into one of the standard base units. It therefore does
not reside in an Advantys STB segment.
z A preferred module requires its own power supply. It does not get logic power
from the island bus.
z To place preferred modules in you island, you must use the Advantys
configuration software.
z You cannot use preferred modules with a basic NIM.
Preferred modules can be placed between segments of STB I/O or at the end of the
island. If a preferred module is the last module on the island bus, it must be
terminated with a 120 Ω terminator resistor.
Standard
CANopen
Devices
An Advantys STB island can support standard off-the-shelf CANopen devices.
These devices are not auto-addressable on the island bus, and therefore they must
be manually addressed, usually with physical switches built into the devices. They
are configured using the Advantys configuration software. You cannot use a
standard CANopen device with a basic NIM.
When standard CANopen devices are used, they must be installed at the end of the
island. 120 Ω termination must be provided both at the end of the last Advantys STB
segment and at the last standard CANopen device.
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