Tag Data Link Functions And Specifications - Omron CJ1W-EIP21 Operation Manuals

7 Tag Data Link Functions
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.)
7-1-3

Tag Data Link Functions and Specifications

The tag data link and performance specifications of the NJ-series CPU Unit are given below.
Item
Communications type
Setting method
*1 Supported variable
Tags
types
Maximum number of
words per tag
Maximum number of
tags
Tag sets Maximum number of
tags per tag set
Maximum number of
words per tag set
Maximum number of tag
sets
Connections
Connection type
Packet interval (RPI)
*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.
Type
Variables with basic data types
Enumerated variables
Array variables
Structure variables
Union variables
7-6
Standard EtherNet/IP implicit communications (connection-type cyclic communi-
cations)
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.
You can specify the following network variables as tags.
• Global variables
722 words (1,444 bytes)
*4
256
8 (7 when Controller status is included)
722 words (1,444 bytes)
256
Maximum number of connections per Unit: 256
Each connection can be set for 1-to-1 (unicast) or 1-to-N (multi-cast) communi-
cations.
0.5 to 10,000 ms in 0.5-ms increments
The packet interval can be set separately for each connection.
Example
aaa
bbb
Arrays bbb
Elements ccc[2]
Structures ddd
Member ddd.xxx
Unions eee
Member eee.yyy
CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)
Specification
*2, *3
Specification
Supported.
Supported.
Supported.
Supported.
Supported.
Supported.
Not supported.
Supported.