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8 CIP Message Communications
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
8-5 CIP Object Services
8
8-5-4 Ethernet Link Object (Class ID: F6 Hex)
This object is used to set and read Ethernet communications and read Ethernet communications status
information. For an NX701 CPU Unit, it is necessary to use the route path of the CIP communications
command (the RoutePath in-out variable) to specify the port number (1 or 2) of the built-in EtherNet/IP
port to access.
Specify the service to execute with the service code.
Specify F6 hex.
Specify 00 or 01 hex.
00: Specify the class
01: Built-in EtherNet/IP port
The attribute ID specifies the information to read.
Class Attribute ID
The class attribute ID specifies the attribute of the entire object.
Instance Attribute ID
The instance attribute ID specifies the attribute of the instance.
8-5-4 Ethernet Link Object (Class ID: F6 Hex)
Service Codes
Service
code
Parameter name Description
Supported services
Classes Instances
0E hex Get_Attribute_Single Reads the value of the specified attribute. Supported. Supported.
10 hex Set_Attribute_Single Writes a value to the specified attribute. Supported. Supported.
4C hex Get_and_Clear Specify Attribute4 or Attribute5 to reset the value of the attribute to 0. Not sup-
ported.
Supported.
Class ID
Instance ID
Attribute ID
Attribute ID Parameter name Description Attribute
Read data
Data
type
Value
01 hex Revision Revision of the object Read UINT
0002 hex: Unit version 1.11 or earlier
0004 hex: Unit version 1.12 or later
02 hex Max Instance The maximum instance number Read UINT 0001 hex
03 hex Number of Instances The number of object instances Read UINT 0001 hex
Attribute ID Parameter name Description Attribute
Read/write data
Data
type
Value
01 hex Interface Speed Gives the baud rate for the inter-
face.
Read UDINT Reads the current value.
02 hex Interface Flags Gives the status of the interface. Read DWORD Refer to (1) Interface Flag Details,
below.
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