7
Ethernet/IP Objects
Section 7 contains information about the Ethernet/IP objects that can be accessed using Explicit Messages. For
information on the format of Explicit Messages and example ladder logic programs, refer to section 6.
The CIP family of protocols has a library of commonly defined objects currently divided into 46 object classes.
Class 1 = DeviceNet, Class 2 = EtherNet/IP and Class 3 = ControlNet. Refer to the EtherNet/IP specification for
more information about Ethernet/IP objects. Information about the EtherNet/IP specification is available on the
ODVA web site (http://www.odva.org).
7.1
Identity Object
The Identity Object defines the device. A device typically does not change its identity so all attributes are
normally read only. The identity object's data can be queried from a target node without knowing what that
device is before a message is sent. From this data, the EDS file of the device can be identified.
P94ETH01D
Acyclic Data Access
Table 25: Ethernet/IP Objects
Object
Identity
Assembly
System940
TCP/IP Interface Object
Ethernet Link Object
Class Code
Class Attributes:
Class Services:
Instance 1
Instance Attributes
Instance Services
Class Code
Hex
Dec
0x01
1
0x04
4
0x64
100
0xF5
245
0xF6
246
Revision
Max Instance
Number Instance
Max ID# class attribute
Max ID# instance attribute
Get_Attribute_Single()
Vendor ID
Device Type
Product Code
Revision
Major
Minor
Product Name
Get_Attribute_All
Get_Attribute_Single
Reset
34
0x01
1
1
EnetIP 940
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