Omron CS1W-EIP21 Operation Manual page 29

EtherNet/IP Unit Overview
Connection information
• Target IP address
• Target tag set
• Originator tag set
• Packet interval (RPI)
Tag Set (Inputs)
Tag set name: SP1_IN
PLC Status
Originator
device
Note
Message Communications
(Unconnected Message
Service)
6
The following table shows the tag and tag set specifications of the CS1W-
EIP21 and CJ1W-EIP21.
Tags
Total size of all tags ≤ 184,832 words
Maximum size of 1 tag ≤ 722 words
(The maximum size is 721 words when
the tag set includes the PLC status.)
Number of registrable tags ≤ 256
Connection
Tag a
Tag b
Tag c
:
Tag g
EtherNet/IP
In this example, a connection is established with the originator's tag list con-
taining tags a to g (inputs), which are grouped in a tag set called SP1_IN, and
the target's tag list containing tags i and ii (outputs), which are grouped in a
tag set called SP1_OUT.
User-specified CIP commands can be sent to devices on the EtherNet/IP net-
work. CIP commands, such as those for reading and writing data, can be sent
and their responses received by executing the CMND instruction from the CS/
CJ-series CPU Unit's user program (without using a connection).
(With an NE1S-series CPU Unit, use the CSND instruction to send CIP com-
mands.)
Maximum size of 1 tag set ≤ 722 words
(The maximum size is 721 words when
the tag set includes the PLC status.)
Number of tags per tag set ≤ 8
(7 tags/tag set when the tag set includes
the PLC status)
Note Input and output variables cannot
Number of registrable tag sets ≤ 256
Tag Set (Outputs)
Tag set name: SP1_IN
PLC Status
Data flow
Section 1-1
Tag set
be combined.
Tag i
Tag ii
Target
device