User`s guide

Industrial Protocols EtherNet/IP
2-10
Connection Manager Object
The Connection Manager Class allocates and manages the internal resources associated with both I/O and
Explicit Messaging connections.
The class code is 0x06. There is one instance of this object.
The supported connection trigger type is cyclic and change of state.
The instance attribute list is introduced as the following.
Class Attribute List
Attr ID
Access
Rule
Name
Data Type
Description
1
Get
Revision
UINT (16)
Revision of this object
Instance Attribute List
Attr ID
Access
Rule
Name
Data Type
Description
1
Get/Set
Open Requests
UINT(16)
Number of Forward Open service requests received
Common Service List
Service
Code
Implementation
Service Name
Description
Class
Instance
0x0e


Get_Attribute_Single
Returns the contents of the specified attribute
0x10

Set_Attribute_Single
Used to modify an object instance attribute
0x4E

Forward_Close
Closes a connection
0x54

Forward_Open
Opens a connection
Port Object
The port object represents the underlying interface of CIP which is EtherNet/IP.
The class code is 0xf4. There is one instance of this object.
The instance attribute “Port Type” identifies the CIP adaptation.
Class Attribute List
Attr
ID
Access
Rule
Name
(Struct.)
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 at this class level of the device.
8
Get
Entry Port
UINT (16)
The attribute ID number of the last class
attribute of the class definition
implemented in the device
9
Get
Port Instance
Info
(Array of
Struct.)
Port Type
UINT (16)
Enumerates the type of port
Port Number
UINT (16)
CIP port number associated with this port
Instance Attribute List
Attr
ID
Access
Rule
Name
(Struct.)
Data Type
Description
1
Get
Port Type
UINT (16)
Enumerates the type of port.
4 = EtherNet/IP.
2
Get
Port Number
UINT (16)
CIP port number associated with this port.
(Value 1 is reserved for internal product use)
3
Get
Link Object
(Struct.)
Path Length
UINT (16)
Number of 16 bit words in the following
path.
Link Path
Padded
EPATH
Logical path segments that identify the
object for this port.
4
Get
Port Name
SHORT_STR
ING
String which names the physical network
port. The maximum number of characters in