Overview Of The Cip Message Communications Service; Message Communications Service Specifications - Omron NY532-5400 User Manual

8-1 Overview of the CIP Message
Communications Service
8-1-1

Overview of the CIP Message Communications Service

CIP commands can be sent to devices on the EtherNet/IP network whenever they are required. You
execute CIP_SEND instructions in a program in the NY-series Controller to send CIP commands, such
as those to read and write data and to receive the responses.
NY-series
EtherNet/IP
Controller
EtherNet/IP
You can use CIP messages from the client to read and write memory in the Controller with the server
without adding any special programming to the user program of the Controller with the server.
NJ/NX/NY-series
EtherNet/IP
Controller
EtherNet/IP
8-1-2

Message Communications Service Specifications

Message type
Execution method
Data contents
Communications parameters
Maximum length
per connection
NY-series Industrial Panel PC / Industrial Box PC Built-in EtherNet/IP Port User's Manual (W563)
Built-in
port
CIP command
CIP response
NJ/NX/NY-series
Controller
Built-in
or host computer
port
CIP command
CIP response
Item
Either of the following can be selected.
CIP UCMM connectionless messages
CIP class 3 connection messages
CIPSend (Send Explicit Message Class 3) instruction or CIPUC-
MMSend (Send Explicit Message UCMM) instruction
Sending required CIP commands and receiving responses
Message type, timeout value, and root path specification
Non-connection 502 bytes
type (UCMM)
Connection type • Using Forward_Open
(class 3) 502 bytes
• Using Large_Forward_Open
8192 bytes
8 CIP Message Communications
Built-in
EtherNet/IP
port
Built-in
NY-series
EtherNet/IP
Controller
port
Specification
8
8-3