Introduction To Tag Data Links; Tag Data Links - Omron NJ Series User Manual

7 Tag Data Link Functions
7-1

Introduction to Tag Data Links

7-1-1

Tag Data Links

Tag data links enable cyclic tag data exchanges on an EtherNet/IP network between Controllers or be-
tween Controllers and other devices. Variables are assigned to tags. (You can also assign I/O memory
addresses to tags.)
The settings for tag data links are made with the Network Configurator. Refer to 7-2 Setting Tag Data
Links on page 7-19 for information on how to make the settings.
Additional Information
You can also use the Sysmac Studio to set the tag data links.
Refer to A-2 Use the Sysmac Studio to Set the Tag Data Links (EtherNet/IP Connections) on
page A-3 for details on setting the tag data links on the Sysmac Studio.
With a tag data link, one node requests the connection of a communications line to exchange data
with another node.
The node that requests the connection is called the originator, and the node that receives the request
is called the target.
NJ/NX-series CPU Unit
Var_In_a
I/O refreshed.
Var_In_b
Var_In_c
Var_Out_d
Var_Out_e
Var_Out_f
Controller status
For communications between Controllers, the connection information is set in the built-in EtherNet/IP
port of the Controller that receives (consumes) the data (i.e., the originator).
Additional Information
For communications between a Controller and an I/O device, the connection information is set
in the built-in EtherNet/IP port that is the originator. If an I/O device is used, the Network Config-
urator must have an EDS file installed that includes connection information for the I/O device.
Refer to A-3 EDS File Management on page A-39 for the installation procedure.
The output words and input words for each node for which data is exchanged must be set in the con-
nection information. These words are called an output tag set and an input tag set, respectively. Each
tag set must contain at least one tag.
7-2
Input
Connection
Tag set name: ABC
• Var_In_a
Input tags
• Var_In_b
• Var_In_c
Originator
Output
Connection
Tag set name: XYZ
I/O refreshed.
• Var_Out_d
Output tags
• Var_Out_e
• Var_Out_f
Target
EtherNet/IP EtherNet/IP
EtherNet/IP Unit
CJ-series CPU Unit
Outputs
Tag set name: OUT1
• Var-Out1
Output tags
• Var-Out2
I/O refreshed.
• Var-Out3
Target
Input
Tag set name: IN1
I/O refreshed.
• DM00200
Input tags
• WR300
• DM20100
Originator
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User's Manual (W506)
Var-Out1(DM0)
Var-Out2(DM100)
Var-Out3(DM200)
DM00200
WR300
DM20100
Controller status