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8-1
Overview of the CIP Message Com-
munications 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 NJ/NX-series CPU Unit to send CIP com-
mands, such as those to read and write data and to receive the responses.
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.
EtherNet/IP
Built-in
EtherNet/IP
port
CIP response
CIP command
or host computer
Built-in
EtherNet/IP
port
NJ/NX-series
Controller
NJ/NX-series
Controller
8-1-2
Message Communications Service Specifications
Item
Specification
Message type
Either of the following can be selected.
CIP UCMM connectionless messages
CIP class 3 connection messages
Execution method
CIPSend (Send Explicit Message Class 3) instruction or CI-
PUCMMSend (Send Explicit Message UCMM) instruction
Data contents
Sending required CIP commands and receiving responses
Communications parameters
Message type, timeout value, and root path specification
Maximum length per
connection
Non-connection type
(UCMM)
502 bytes
Connection type
(class 3)
•
Using Forward_Open
502 bytes
•
Using Large_Forward_Open
NX701 CPU Unit: 8192 bytes
NX102 CPU Unit: 1994 bytes
NX1P2 CPU Unit: 1994 bytes
NJ-series CPU Unit: 1994 bytes
8 CIP Message Communications
8-3
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
8-1
Overview of the CIP Message Communications Service
8
8-1-1
Overview of the CIP Message Communications Service
Summary of Contents for Sysmac NX1P2-10 1 Series
Page 8: ...Manual Structure 6 NJ NX series CPU Unit Built in EtherNet IP Port User s Manual W506...
Page 34: ...Revision History 32 NJ NX series CPU Unit Built in EtherNet IP Port User s Manual W506...
Page 388: ...9 Socket Service 9 34 NJ NX series CPU Unit Built in EtherNet IP Port User s Manual W506...
Page 430: ...12 FTP Client 12 14 NJ NX series CPU Unit Built in EtherNet IP Port User s Manual W506...
Page 569: ...I Index I 1 NJ NX series CPU Unit Built in EtherNet IP Port User s Manual W506 I...
Page 576: ...Index I 8 NJ NX series CPU Unit Built in EtherNet IP Port User s Manual W506...
Page 577: ......