Datalogic AMT58 Series Manual page 176

GLOSSARY OF PROFINET TERMS
MAC address
Module
NRT
Organization block
Profile
Provider Status
Proxy
Real-time
RT
Slot
Standard signal
Submodule
Subslot
Sync domain
System function
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AMT58...PN
The MAC address is an identifier unique worldwide consisting of
two parts: the first 3 bytes are the manufacturer ID and are pro-
vided by IEE standard authority; the last three bytes represent a
consecutive number of the manufacturer.
Modules are user defined components that plug into slots. Mod-
ules can be real or virtual.
Non Real Time - The non Real Time PROFINET IO Channel. Config-
uration and diagnostic messages are transferred over the NRT
Channel.
A range of organization blocks (OB) are designed to execute the
user program. OBs are the interface interface between the user
program and the operating system of a CPU. They permit event-
controlled processing of special program components within the
user program. The order in which the user program is executed is
defined in the organization blocks.
Profiles define application-specific functionality to ensure the
openness of PROFIBUS and PROFINET is utilized consistently. PI
Profiles can cover simple devices such as encoders by defining
how signals are used and how they are physically connected. How-
ever, profiles are increasingly covered more complex systems or
requirements. Profiles such as PROFIdrive and PROFIsafe deliver
active functionality as well. An advanced profile covering active
power management for end devices like lasers and robots is now
under development with the aim of bringing significant reductions
in energy consumption for the automotive industry. Profiles guar-
antee quicker system design and they support faster device inter-
change, promoting competition amongst vendors, increased
choice for users and full interoperability.
The Status an IO device provides to an IO Controller with the data
transferred to the Controller.
A device which maps non PROFINET IO data to PROFInet.
Real-time means that a system processes external events within a
defined time. If the reaction of a system is predictable, one speaks
of a deterministic system. The general requirements for real-time
are therefore: deterministic response and defined response time.
Real Time - The Real Time PROFINET IO Channel. I/O and Alarm
Data are transferred over the RT Channel.
A group of one or more Subslots. Slots can be real or virtual.
The encoder profile defines a series of standard signals which are
used to configure the IO data.
A component of a module that is plugged into a subslot. A sub-
module is real or virtual.
A group of one or more channels. Subslots can be real or virtual.
All PROFINET devices that are to be synchronized via PROFINET IO
with IRT must belong to a sync domain. The sync domain consists
of precisely one sync master and at least one sync slave. IO con-
trollers and switches can hold the role of a sync master or sync
slave. Other IO devices support only the role as sync slave.
System functions (SFC) are integral functions in the operating sys-
tem of a S7 CPU. In addition, SFCs are frequently called implicitly
by SFBs. SFCs can be called by the user program like normal func-
tions. SFCs are used to implement a number of important system
functions for Profinet IO.