Omron CJ1W-EIP21 - 10-2010 User Manual

7
Communications Services Overview Section 1-4
Note (1) In this example, a connection is established with the originator’s tag list
containing 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.
(2) 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 EtherNet/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 correct specifications for the application.
Refer to 2-1-3 Communications Specifications for the communications
specifications.
2) Message Communications (Unconnected Message Service)
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).
Tag Set (Inputs)
Tag g
:
Tag c
Tag b
Tag a
PLC Status
EtherNet/IP
Connection information
• Target IP address
• Target tag set
• Originator tag set
• Packet interval (RPI)
Tag set name: S
P1_IN
Originator
device
Target
device
Data flow
Connection
Tag Set (Outputs)
Tag ii
Tag i
PLC Status
Tag set name: S P1_IN
Ethernet
(EtherNet/IP)
CMND
CIP command
Response
EtherNet/IP Unit
CS/CJ-series CPU Unit

Omron CJ1W-EIP21 - 10-2010 Specifications

General

Brand	Omron
Model	CJ1W-EIP21 - 10-2010
Category	Network Hardware
Language	English