CJ1W-EIP21 Omron, CJ1W-EIP21 Datasheet - Page 140

• Manufacturer Part Number: CJ1W-EIP21
• Description: Ethernet I/P Module
• Manufacturer: Omron

Specifications of CJ1W-EIP21

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Overview of Tag Data Links
6-1
6-1-1
6-1-2
Setting and Downloading Tag Data Link Parameters
112
Overview of Tag Data Links
Tag Data Links
Overview of Operation
Note
Note
PLC status
DM00200
Var-Out(WR300)
DM20100
Var-In(WR200)
DM20000
DM00100
CPU Unit
Tag data links enable cyclic data exchanges on an EtherNet/IP network
between PLCs or between PLCs and another device. I/O memory addresses
(e.g., in the CIO or DM Area) and symbols can be assigned to tags. The set-
tings for tag data links are made using the Network Configurator. Refer to 6-2
Setting Tag Data Links for information on how to make the settings.
Symbols can be used in tags only for the CJ2H-CPU6@-EIP and CJ2M-
CPU3@. If you are using a CJ1W-EIP21 or CS1W-EIP21 EtherNet/IP Unit that
is mounted to a CJ2H-CPU6@ or any CPU Unit other than the CJ2H-CPU6@-
EIP, use I/O memory addresses to set the tag data links.
With tag data links, one node requests the opening of a communications line
called a connection to exchange data with another node. The node that
requests opening the connection is called the originator, and the node that
receives the request is called the target.
For communications between PLCs, the connection information is set in the
EtherNet/IP Unit or built-in EtherNet/IP port of the PLC that receives data (i.e.,
the originator).
The specifications for using tag data links with the CJ2M built-in EtherNet/IP
port on a CJ2M-CPU3@ CPU Unit are different from the specifications for Eth-
erNet/IP Units (CJ1W-EIP21 or CS1W-EIP21) and the CJ2H built-in EtherNet/
IP port on a CJ2H-CPU@@-EIP CPU Unit. Make sure you are using the cor-
rect specifications for the application.
Refer to 2-1-3 Communications Specifications for the communications specifi-
cations.
The tag data link parameters (e.g., connection information) that are described
below are created using the Network Configurator, and then the parameters
are downloaded to all originator devices on the EtherNet/IP network.
I/O refreshed.
I/O refreshed.
Tag set name: ABC
Inputs
Outputs
Tag set name: XYZ
EtherNet/IP Unit
DM00200
Var-Out
DM20100
DM00100
Var-In
DM20000
Originator
Target
Input tags
Output tags
Ethernet (EtherNet/IP)
Connection
Connection
Output tags
Input tags
Outputs
Inputs
Tag set name: OUT1
Tag set name: IN1
EtherNet/IP Unit
Var-Out1
Var-Out2
Var-Out3
DM00200
WR300
DM20100
Originator
Target
I/O refreshed.
I/O refreshed.
PLC status
Section 6-1
Var-Out2(DM100)
Var-Out3(DM200)
DM00200
WR300
DM20100
Var-Out1(DM0)
CPU Unit