Introduction To Communications Services; Cip (Common Industrial Protocol) Communications Services - Omron NJ Series User Manual

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Introduction to Communications
Services
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CIP (Common Industrial Protocol) Communications Services

Tag Data Links (Cyclic Communications)
A program is not required to perform cyclic data exchanges with other devices on the EtherNet/IP net-
work.
Normally, a connection is started with the target device for each tag set that was created with the Net-
work Configurator to start communications for tag data links for a built-in EtherNet/IP port. One con-
nection is used per tag set.
The maximum number of connections that can be registered is shown below.
• NX701 CPU Unit: 256 connections (total of 512 connections with two ports)
• NX102 CPU Unit: 32 connections (total of 64 connections with two ports)
• NX1P2 CPU Unit: 32 connections
• NJ-series CPU Unit: 32 connections
Refer to 1-3-1 Specifications on page 1-8 for the built-in EtherNet/IP port tag and tag set specifica-
tions.
Connection Information
• Target IP address
• Target tag set
• Originator tag set
• Packet interval (RPI)
Tag Set (Input)
Tag set name: SP1_IN
Controller status
Tag a
Tag b
Tag c
Tag g
Originator device
Note In this example, a connection is established with the originator's tag list with tags a to g (inputs), which are
in a tag set called SP1_IN, and the target's tag list with tags i and ii (outputs), which are in a tag set called
SP1_OUT.
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User's Manual (W506)
Connection
Tag Set (Output)
Tag set name: SP1_OUT
Controller Status
Data flow
EtherNet/IP
Tag i
Tag ii
Target device
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