Omron CJ1W-EIP21 用户手册

Explicit messages defined in EtherNet/IP can be used to send service
requests to other companies’ EtherNet/IP masters/slaves and OMRON PLCs
with CS/CJ-series EtherNet/IP Units and built-in EtherNet/IP ports.

Note Specific FINS commands (commands 2810 and 2801) are used to send

explicit messages.

Note The CS/CJ-series EtherNet/IP Units and built-in EtherNet/IP ports (CS1W-

EIP21, CJ1W-EIP21, CJ2H-CPU

@@

-EIP, or CJ2M-CPU3

@

) contain a PLC

Object, so that other devices can read/write the I/O memory of the CPU Unit
with the built-in EtherNet/IP port or the CPU Unit to which the EtherNet/IP Unit
is mounted.

Network communi-
cations instruction

CIP UCMM messages can be sent to an EtherNet/IP 
Unit or built-in EtherNet/IP port by a CMND(490) 
instruction containing FINS command code 2810 
Hex.

Automatically responds to explicit mes-
sages from other devices.

Functions supported 
in remote devices

• Masters/slaves made by other manufacturers:

Supported services determine supported functions.

• PLC with a CS/CJ-series EtherNet/IP Unit or built-in 

EtherNet/IP port:
Supports the reading/writing of a remote CPU Unit’s 
status information and I/O memory data.

• Masters made by other manufacturers
• PLC with a CS/CJ-series EtherNet/IP Unit 

or built-in EtherNet/IP port: Supports the 
reading/writing of the local CPU Unit’s sta-
tus information and I/O memory data.