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• Destination address: Specify the destination IP address
b) CPU Unit 2 to EtherNet/IP Unit 2
• Network type number: "#01" (Output the command via the internal backplane port)
• Destination address: "#12 hex" (Unit address of the EtherNet/IP Unit (Unit number: 2+10
hex =12 hex))
c) EtherNet/IP Unit 2 to EtherNet/IP Unit 3
• Network type number: "#02" (Output the command via the EtherNet/IP port)
• Destination address: Specify the destination IP address
d) EtherNet/IP Unit 3 to CPU Unit 3
• Network type number: "#01" (Output the command via the internal backplane port)
• Destination address: "#00" (Unit address of the CPU Unit)
02\192.168.250.2\01\#12\02\192.168.257.3\01\#00
Route path
(1)
(2)
:
(3)
(4)
8-2-5
Request Path (IOI)
A request path indicates an object of a device on the network.
A CIP communications instruction uses the request path to access an object of a device.
Overview of Request Path
In the CIP world, each device is modeled as a collection of objects. An Object abstractly represents
the specific configuration elements of a device.
Object Instance
Data
Data
Data
Data
Processing
Attributes
Service
External request
(example: read)
Device
Object
Object
Object
In the CIP Common Specification, Object, Class, Instance, Attribute, and Service are defined as fol-
lows: (Source: CIP Common Specification)
Term
Definition
Object
An abstract representation of a particular component within a device.
Class
A set of objects that all represent the same kind of system component.
Instance
A specific and real (physical) occurrence of an object.
Attribute
A description of an externally visible characteristic or feature of an object.
Service
A request from an external object (e.g., to read data).
You use the Class ID Instance ID and Attribute ID to access an object.
You specify these three IDs to designate an object in a device.
8 CIP Message Communications
8-16
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
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: ......