Glossary Of Profinet Terms - GE PACSystems RXi User Manual

Glossary of PROFINET Terms

9.3
Glossary of PROFINET Terms
AR
Broadcast
CR
DAP
Gratuitous
ARPs
GSDML
IOC
IOD
IOCR
IOCS
IOPS
IOxS
LLDP
MRC
MRM
MRP
Multicast
NMS
Phase
CPU Node
RDO
GFK-2816F
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 are then established for the different types of data to
be exchanged.
In Ethernet, the transmission of a network message to all hosts on the network.
Communication Relationship. PROFINET term for a channel that is established
within an Application Relationship to transfer specific data between an IO-
Controller/Supervisor and a given IO-Device. Multiple CRs are established within an
AR to transfer data.
Device Access Point. This access point is used to address an IO-Device as an
entity.
An Address Resolution Protocol (ARP) request sent by the host to resolve its own IP
address.
General Station Description Markup Language - definition of PROFINET Device
Characteristics.
PROFINET IO-Controller
PROFINET IO-Device
Input Output Communication Relationship – describes the type (input/output) and
amount of I/O data to be transferred, the sequence of the transfers and the transfer
cycle between a PROFINET IO-Controller (or IO-Supervisor) and a PROFINET IO-
Device.
PROFINET Input/Output Consumer Status is transmitted on the PROFINET network
to provide feedback on Input Data for an IO controller and Output Data for an IO
device.
PROFINET Input/Output Provider Status is transmitted on the PROFINET network to
provide feedback on Output Data for an IO controller and the Input Data for an IO
device.
PROFINET abbreviation for the IOCS and/or IOPS (see above).
Link Layer Discovery Protocol. IEEE standardized protocol used by network devices
to advertise their identity and capabilities.
Media Redundancy Client. Within Media Redundancy Protocol, an MRC is
responsible for helping the MRM detect breaks/no breaks in the ring.
Media Redundancy Manager. Within Media Redundancy Protocol, an MRM is
responsible for ensuring that the ring does not have a closed loop, while
simultaneously ensuring maximal connectivity between nodes on the ring.
Media Redundancy Protocol. An Ethernet protocol that provides redundant paths
for PROFINET-IO cyclic traffic by supporting a ring topology.
In Ethernet, the transmission of a network message to all hosts within a host
group.
Network Management System. Executes applications that monitor and control
managed devices in an SNMP-managed network.
If the IOCR Update Period is greater than the Send Clock time, the Update Period
is divided into multiple phases where each phase is equal to one Send Clock.
In a PACSystems RXi PROFINET network, a CPU Node is a node that has a
PACSystems RXi Controller that is connected to the PROFINET network.
Record Data Object. Services used to read and write structured data stored in a
PROFINET IO-Device.
August 2015
Chapter 9. PROFINET IO-Controller Overview
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