RSTI-EP PROFINET I/O Controller User Manual
Section 1
GFK-2571R
May 2021
Introduction
25
1.7
Glossary
AR
Application Relationship. PROFINET term for a relationship that is established
between an IO-Controller/Supervisor and IO-Device. For any data to be
exchanged between an IO-Controller/Supervisor and a given IO-Device, an
Application Relationship must be established. Within the Application
Relationship, various Communication Relationships (CRs) are then
established for the different types of data to be exchanged.
Broadcast
In Ethernet, the transmission of a network message to all hosts on the
network.
CLI
Command Line Interface
CPU Node
In a PACSystems RX3i PROFINET network, a CPU Node is a node in which a
PACSystems RX3i CPU is connected to the PROFINET network.
CR
Communication Relationship. PROFINET term for a channel that is
established within an Application Relationship (AR) to transfer specific data
between an IO-Controller/Supervisor and a given IO-Device. Multiple CRs are
established within an AR to transfer data.
Critical Network
Port
An Ethernet port connection on the PROFINET I/O Controller that is
configured as a critical port. When the last Critical Network Port is
disconnected from its network, a diagnostic fault is logged. In a redundancy
system where the PROFINET I/O Controller is controlling redundant devices,
this results in a CPU redundancy role-switch with the CPU placed into
Stop/Fault mode.
DAP
Device Access Point. This access point is used to address an IO-Device as an
entity.
Gratuitous ARPs
An Address Resolution Protocol (ARP) request sent by the host to resolve its
own IP Address.
GSDML
General Station Description Markup Language - definition of PROFINET
Device Characteristics.
IOC
PROFINET IO-Controller
Summary of Contents for PACSystems RX3i
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