Specifications

Glossary
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31007715 6/2008
PE protective earth. A return line across the bus for fault currents generated at a sensor
or actuator device in the control system.
peer-to-peer
communications
In peer-to-peer communications, there is no master/slave or client/server
relationship. Messages are exchanged between entities of comparable or
equivalent levels of functionality, without having to go through a third party (like a
master device).
PLC programmable logic controller. The PLC is the brain of an industrial manufacturing
process. It automates a process as opposed to relay control systems. PLCs are
computers suited to survive the harsh conditions of the industrial environment.
PowerSuite
Software
PowerSuite Software is a tool for configuring and monitoring control devices for
electric motors, including ATV31, ATV71, and TeSys U.
preferred module An I/O module that functions as an auto-addressable device on an Advantys STB
Island but is not in the same form factor as a standard Advantys STB I/O module
and therefore does not fit in an I/O base. A preferred device connects to the Island
bus via an EOS module and a length of a preferred module extension cable. It can
be extended to another preferred module or back into a BOS module. If it is the last
device on the Island, it must be terminated with a 120 Ω terminator.
premium
network
interface
A premium NIM has advanced features over a standard or basic NIM.
prioritization An optional feature on a standard NIM that allows you to selectively identify digital
input modules to be scanned more frequently during a the NIM’s logic scan.
process I/O An Advantys STB I/O module designed for operation at extended temperature
ranges in conformance with IEC type 2 thresholds. Modules of this type often feature
high levels of on-board diagnostics, high resolution, user-configurable parameter
options, and higher levels of agency approval.
process image A part of the NIM firmware that serves as a real-time data area for the data exchange
process. The process image includes an input buffer that contains current data and
status information from the Island bus and an output buffer that contains the current
outputs for the Island bus, from the fieldbus master.
producer/
consumer model
In networks that observe the producer/consumer model, data packets are identified
according to their data content rather than by their node address. All nodes listen on
the network and consume those data packets that have appropriate identifiers.
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