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Communications Services Overview Section 1-4
Refer to the CX-Integrator Operation Manual (Cat. No. W464) for information
on the CX-Integrator.
1-4 Communications Services Overview
The following communications services are supported.
CIP (Common Industrial Protocol) Communications Services
1) Tag Data Links (Cyclic Communications)
A program is not required to perform cyclic data exchanges with other devices
in the EtherNet/IP network.
Normally, the tag data links in an EtherNet/IP Unit or built-in EtherNet/IP port
are started by grouping the tags created with the Network Configurator into a
tag set, and establishing a connection with the target device using that group
of tags. One connection is used per group (tag set). Up to 32 connections for
the CJ2M and up to 256 connections for other CPU Units) can be registered.
The following table gives the tag and tag set specifications.
Personal computer
running Windows
CX-Integrator
Routing table
settings
EtherNet/IP Unit or
built-in EtherNet/IP port
CS/CJ-series CPU Unit
Routing Table Area
Tags Tag sets
CS1W-EIP21
CJ1W-EIP21
CJ2H-CPU@@-EIP
CJ2M-CPU3@ CS1W-EIP21
CJ1W-EIP21
CJ2H-CPU@@-EIP
CJ2M-CPU3@
Total size of all tags ≤
184,832 words
Total size of all tags ≤ 640
words
Maximum size of 1 tag set ≤
722 words
(The maximum size is 721
words when the tag set
includes the PLC status.)
Maximum size of 1 tag set ≤
20 words
(The maximum size is 19
words when the tag set
includes the PLC status.)
Maximum size of 1 tag ≤ 722
words
(The maximum size is 721
words when the tag set
includes the PLC status.)
Maximum size of 1 tag ≤ 20
words
(The maximum size is 19
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 be combined.
Number of registrable tags ≤
256
Number of registrable tags ≤
32
Number of registrable tag
sets ≤ 256
Number of registrable tag
sets ≤ 32