Omron Sysmac NJ-series Network Connection Guide

2．Terms and Definitions
2
2. Terms and Definitions
The terms and definitions used in this guide are given below.
Term
Explanation and Definition
node It refers to a relay point, a junction point or an end point on an
EtherNet/IP network made up of devices having an EtherNet/IP port.
A device with one EtherNet/IP port is recognized as one node and two
EtherNet/IP ports as two nodes on an EtherNet/IP network.
tag A unit that is used to exchange data with tag data links.
Data is exchanged between the local network variables and remote
network variables specified in the tags or between specified I/O memory
areas.
tag set When a connection is established, one or more tags (up to eight tags
including Controller status) are configured as a collective set of tags.
This is called a tag set. Each tag set represents a unit of data for one tag
data link connection. Tag data links are therefore created through a
connection between one tag set and another tag set.
A tag set name must be set for each tag set.
tag data links The standard EtherNet/IP implicit communications are called tag data
links. Tag data links enable cyclic tag data exchanges on an EtherNet/IP
network between Controllers or between Controllers and other devices.
connection It is used to exchange data as a unit within which data concurrency is
maintained.
connection type There are two kinds of connection types for tag data links.
One is a multi-cast connection, and the other is a unicast (point-to-point)
connection. The multi-cast connection sends an output tag set in one
packet to more than one node. The unicast connection separately sends
one output tag set to each node. Therefore, the multi-cast connection
can decrease the communications load if one output tag set is sent to
more than one node.
originator and target To make tag data links, it is necessary to open a connection between
nodes that perform tag data links. The node that requests the
connection is called the originator, and the node that receives the
request is called the target.
tag data link
parameters
The information that is set to make tag data links (including tags, tag
sets and connections) is called tag data link parameters.
EDS file A file that describes information unique to a device, such as the number
of I/O points for a specified EtherNet/IP device.

Omron Sysmac NJ-series Specifications

General

Brand	Omron
Model	Sysmac NJ-series
Category	Computer Hardware
Language	English