Connection Manager Object
Description
The connection manager object establishes and manages the run-time exchange of messages between devices.
Class Code
The connection manager object class code is 0x06 as defined by CIP.
Class Attributes
|
Attribute ID |
Name |
Access |
Description |
|---|---|---|---|
|
0x01 |
Revision |
R |
The Connection Manager implementation revision. Returns 0x01. |
|
0x02 |
Maximum Instance |
R |
The largest instance number. Returns 0x01. |
|
0x03 |
Number of Instances |
R |
The number of object instances. Returns 0x01. |
Class Services
|
Service Code |
Name |
Description |
|---|---|---|
|
0x01 |
Get Attribute All |
Returns the value of all class attributes. |
|
0x0E |
Get Attribute Single |
Returns the value of the specified attribute. |
Instance Codes
Only one instance is implemented: Instance 1.
Instance Attributes
|
Attribute ID |
Name |
Access |
Description |
|---|---|---|---|
|
0x01 |
Incoming Forward Open requests count |
RW |
Total number of incoming connection open requests. |
|
0x02 |
Forward Open Format Unsuccessful count |
RW |
The number of Forward Open requests rejected because of the unexpected format of the Forward Open request. |
|
0x03 |
Forward Open Resource Unsuccessful count |
RW |
The number of Forward Open requests rejected because of insufficient resources. |
|
0x04 |
Forward Open Parameter Value count |
RW |
The number of Forward Open requests rejected because of the parameter value sent with Forward Open. |
|
0x05 |
Incoming Forward Close requests count |
RW |
Total number of incoming connection close requests. |
|
0x06 |
Forward Close Format Unsuccessful count |
RW |
The number of Forward Close requests that has invalid format. |
|
0x07 |
Forward Close Matching Unsuccessful count |
RW |
The number of Forward Close requests that could not be matched to an active connection. |
|
0x08 |
Timed out Connections count |
RW |
The number of connections that has timed out because the other side stopped producing or there was a network interruption. |
Instance Services
|
Service Code |
Name |
Description |
|---|---|---|
|
0x01 |
Get Attribute All |
Returns the value of all instance attributes. |
|
0x0E |
Get Attribute Single |
Returns the value of the specified instance attribute. |
|
0x4E |
Forward Close |
Closes an existing connection. |
|
0x54 |
Forward Open |
Opens a new connection. |
|
0x5B |
Large Forward Open |
Opens a new connection with maximum size buffer. |