Glossary - GE IC695PNC001 User Manual

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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 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.
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.
Device Access Point. This access point is used to address an IO-Device as an entity.
DAP
Gratuitous An Address Resolution Protocol (ARP) request sent by the host to resolve its own IP
ARPs address.
GSDML General Station Description Markup Language - definition of PROFINET Device
Characteristics.
PROFINET IO-Controller
IOC
IOD PROFINET IO-Device
Input Output Communication Relationship – describes the type (input/output) and amount of
IOCR
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
IOCS
provide feedback on Input Data for an IO controller and Output Data for an IO device.
IOPS 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.
IOxS PROFINET abbreviation for the IOCS and/or IOPS (see above).
Link Layer Discovery Protocol. IEEE standardized protocol used by network devices to
LLDP
advertise their identity and capabilities.
MRC 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
MRM
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
MRP
PROFINET-IO cyclic traffic by supporting a ring topology.
In Ethernet, the transmission of a network message to all hosts within a host group.
Multicast
Network Management System. Executes applications that monitor and control managed
NMS
devices in an SNMP-managed network.
If the IOCR Update Period is greater than the Send Clock time, the Update Period is
Phase
divided into multiple phases where each phase is equal to one Send Clock.
In a PACSystems RX3i PROFINET network, a CPU Node is a node that has a
CPU Node
PACSystems RX3i CPU in its rack and is connected to the PROFINET network.
PACSystems* RX3i PROFINET Controller Manual – December 2011
1-16 GFK-2571A