CJ1W-EIP21 Omron, CJ1W-EIP21 Datasheet - Page 216

• 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
7-1
188
Overview
Message communications functions
The message communications functions send command/response messages
between nodes on the Ethernet network. The messages can be sent between
a computer and PLC, between two PLCs, between an OMRON PLC and a
master made by another company, or between slaves. The messages can be
used to send/receive data; read time data, error logs, and other data; or con-
trol operation, e.g., by force-setting/resetting bits.
There are two types of messages: FINS messages and explicit messages.
Outline
Remote
device
Features
Item
Message communications for
OMRON products that use the
FINS protocol.
• Computer with an Ethernet inter-
• OMRON PLCs (with a CS/CJ-
• Send and receive the various
• Provide transparency in mes-
face
series EtherNet/IP Unit, built-in
EtherNet/IP port, or Ethernet
Unit)
FINS commands to provide an
even greater range of services
than the CIP UCMM messages.
sage communications with other
OMRON networks, such as Con-
troller Link, SYSMAC LINK, and
Ethernet.
(CS1/CJ1 CPU Units with unit
version 2.0 or later or CJ2 CPU
Units: Up to 8 levels, CPU Units
with unit version earlier than 2.0:
Up to 3 levels)
FINS messages
FINS communications function
Explicit message
communications function
Standard ODVA message communi-
cations using the CIP protocol.
• Computer with an Ethernet inter-
• Another company’s masters or
• OMRON PLCs (with a CS/CJ-
• Supports message communica-
CS/CJ Series
• CS1W-EIP21
• CJ1W-EIP21
• CJ2H-CPU@@-EIP
• CJ2M-CPU3@
face
slaves.
series EtherNet/IP Unit or built-in
EtherNet/IP port)
tions with other companies’ Ether-
Net/IP devices.
Explicit messages
Receive
Receive
Send
Send
Section 7-1