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7 Ethernet/IP Communications
7-1-3
Tag Data Link Setting Methods
This section describes how to set data links for EtherNet/IP.
The communications areas in the PLC for which data links are created to the Reader/Writer are speci-
fied as tags and tag sets, and the connections are set for tag data link communications.
To connect to OMRON PLCs or Controllers, you use the Network Configurator to set up tag data links
(i.e., tags, tag sets, and connection settings). Refer to the following manuals for details on the tag data
link settings that are made with the Network Configurator.
• NJ-series CPU Unit Built-in EtherNet/IP Port User´s Manual (Cat. No. W506)
• CS/CJ-series EtherNet/IP Units Operation Manual (Cat. No. W465)
• CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (Cat. No. W495)
Precautions for Correct Use
To set tag data links, an EDS file that defines the V780 connection is required. Download the
EDS file from the OMRON website.
The communications areas in the PLC are set as tag data link connections as shown in the following
table.
Tag and Tag Set Settings in the PLC
Setting item
Type of tags and tag set
Tag and tag set names
Data sizes
Select one of the following values for the data size according to the data size required to write or read
an RF Tag in one operation.
Data size
76 bytes
268 bytes
524 bytes
1,036 bytes
7 - 4
Command Area
Output tag sets
I/O memory addresses or variable
names
76, 268, 524, 1,036 bytes
Data size that can be read or written
for an RF Tag in one operation
64 bytes
256 bytes
512 bytes
1,024 bytes
UHF RFID System V780-series Reader/Writer User's Manual (EtherNet/IP
Setting
Response Area
Input tag sets
I/O memory addresses or variable
names
766, 268, 524, 1,036 bytes
TM
) (Z402)
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