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EtherNet/IP Communications Support
EIO0000001601 Draft 2013/07/17
63
About the Object Model
About the Object Model
Introduction
An EtherNet/IP node is modeled as a collection of objects. Each object provides an abstract 
representation of a particular component within a product.
An object model defines the device’s:
I/O data format
configurable parameters
The above information is made available to other vendors through the EDS of the device.
This chapter describes the implemented objects of the Smart Antenna in terms of:
supported class attributes
supported class services
supported instance attributes
supported instance services
Further details can be found in Chapter 5 of [28] The CIP Networks Library Volume 2 EtherNet/IP 
Adaptation of CIP.
Addressing Object Attributes
Objects: Objects provide services and implement behaviors. 
Attributes: Attributes (object characteristics) for particular objects are addressed with integer 
values that correspond to this hierarchy:
MAC ID (node ID)
class ID
instance ID
attribute ID
Supported Objects
This table lists the EtherNet/IP objects supported by the Smart Antenna:
Object Class
Class ID
Instance ID
Messages
Description
Identity Object
1
1
explicit
This object returns the device type, vendor 
ID, serial number, and so on.
Message Router 
Object
2
1
explicit
This object returns information about 
message router implementation.
Assembly Object 
(
4
0x62, 0x66, 
0x67 (98, 102, 
103)
implicit I/O or 
explicit 
This object provides a collection of other 
attributes of object.
Connection 
Management 
Object
6
0x01(1)
explicit
This object allows explicit messages to be 
conducted.