User`s guide

Industrial Protocols EtherNet/IP
2-2
Type 2: New UI2.0
The default Modbus TCP support is enabled. To disable the Modebus TCP support, uncheck the Enable
Modbus TCP then click Apply to activate the setting.
CIP Objects of EtherNet/IP
Several communication objects are defined in CIP (Common Industrial Protocol). Moxa switches support the
following objects for PLCs and SCADA systems to monitor:
• Identity Object
• TCP/IP Interface Object
• Ethernet Link Object
• Assembly Object
• Message Router Object
• Connection Manager Object
• Port Object
• Moxa Networking Object (Vendor Specific)
The supported attributes and services of the above objects are introduced in the table below, including the
access rules for each attribute. To understand the details of each attribute of the standard objects, refer to
the official documents of CIP introduction (Vol. 1) and the EtherNet/IP Adaptation of CIP (Vol. 2).
Identity Object
The Class code of Identity object is 0x01 (Defined in CIP Vol1, 5-2).
There is one instance of this object in our product. It stores the information of the production and the
device. The following tables summarize the class attributes and the instance attributes.
Class Attribute List
Attr ID
Access
Rule
Name
Data Type
Description
1
Get
Revision
UINT (16)
Revision of this object
2
Get
Max Instance
UINT (16)
Maximum instance number of an object
currently created in this class level of the
device
3
Get
Number of Instances
UINT (16)
Number of object instances currently
created in this class level of the device.
6
Get
Maximum ID Number
Class Attributes
UINT (16)
The attribute ID number of the last class
attribute of the class definition implemented
in the device
7
Get
Maximum ID Number
Instance Attributes
UINT (16)
The attribute ID number of the last instance
attribute of the class definition implemented
in the device