User Manual

DI[D-SE-0029870.1.7] 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
(see page 65)
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.