7-5
7 Tag Data Link Functions
NJ-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
7-1 Introduction to Tag Data Links
7
7-1-3 Tag Data Link Functions and Specifications
Note To enable a connection, each tag set must include only input tags or only output tags. (Both input and output
tags cannot be included in the same tag set.)
The tag data link and performance specifications of the NJ-series CPU Unit are given below.
*1 To specify a specific I/O memory address for a tag, create a variable, use an AT specification of the I/O mem-
ory address on the Sysmac Studio, and then specify the variable with the AT specification for the tag.
*2 You can import network variables created in the Sysmac Studio to the Network Configurator as tags.
However, variables with a Network Publish attribute that have variable names that are the same as the I/O
memory address notation, such as “0000” and “H0000” are not exported to CSV files.
*3 The following table lists the variables that you can specify as tags.
*4 The maximum number of tags is given for the following conditions.
• All tag sets contain eight tags.
• The maximum number of tag sets (32) is registered.
7-1-3 Tag Data Link Functions and Specifications
Item Specification
Communications type Standard EtherNet/IP implicit communications (connection-type cyclic communi-
cations)
Setting method After you have set the tags, tag sets, and connections with the Network Configu-
rator, you must download the tag data link parameters to all devices on the Eth-
erNet/IP network.
You can export the network variables that you created on the Sysmac Studio to
a CSV file. You can then import the file to the Network Configurator and assign
the network variables to tags.
After the parameters are downloaded, the EtherNet/IP Units are restarted to
start the tag data links.
Tags
*1
Supported variable
types
You can specify the following network variables as tags.
*2, *3
• Global variables
Maximum number of
words per tag
300 words (600 bytes)
Maximum number of
tags
256
*4
Tag sets Maximum number of
tags per tag set
8 (7 when Controller status is included)
Maximum number of
words per tag set
300 words (600 bytes)
Maximum number of tag
sets
32
Connections Maximum number of connections per Unit: 32
Connection type Each connection can be set for 1-to-1 (unicast) or 1-to-N (multi-cast) communi-
cations.
Packet interval (RPI) 10 to 10,000 ms in 1-ms increments
The packet interval can be set separately for each connection.
Type Example Specification Remarks
Variables with basic data types aaa Supported
Array variables
Arrays bbb Supported
Elements bbb[2] Supported
Structure vari-
ables
Structures ddd Supported
Member ddd.xxx Supported
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