Omron CJ1W-EIP21 Operation Manuals page 59

Message Communications (Class 3 UCMM: Unconnected Message
Service)
User-specified CIP commands can be sent to devices on the EtherNet/IP network. CIP commands,
such as those for reading and writing data, can be sent and their responses received by executing the
CIP Send instruction from the user program in the NJ-series CPU Unit (without a connection).
NJ-series Controller
C IP _ S E N D
CIP messages (CIP commands and responses) can also be transferred to another CIP-based network
via the EtherNet/IP Unit with the CIP routing function for message communications. With NJ-series
Controller, CIP routing between built-in EtherNet/IP ports and EtherNet/IP Units is possible.
EtherNet/IP
NJ-series CPU Unit
Built-in EtherNet/IP port
Version Information
You can use the EtherNet/IP Unit with a CPU Unit with unit version 1.01 or later and Sysmac Stu-
dio version 1.02 or higher.
CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)
EtherNet/IP Unit
CIP command Ethernet
(EtherNet/IP)
Response
EtherNet/IP Unit
EtherNet/IP
1 Introduction
1
1-17