Rockwell Automation 2098-IPD-020-DN Ultra5000 Series Intelligent Positioning Drives with DeviceNet Reference Manual - Manual (Page 40)

Publication 2098-RM002A-EN-P – October 2001
4-16 Programming Reference
Connection Object
(Class ID 05
H
)
The Connection Object manages the internal resources associated
with both I/O and Explicit Messaging Connections. The specific
instance generated by the Connection Class is referred to as a
Connection Instance or a Connection Object. A Connection Object
within a particular module actually represents one of the end-points of
a connection.
DeviceNet Connection Object,
Instance ID = 1 - 10
Instance
ID
Instances
1 Group 2 Explicit Message Connection
2 Poll I/O Connection
6-10 Group 3 Explicit Message Connections
DeviceNet Connection Object,
Attributes of Instances ID = 1 - 10 /
Attr ID
Access
Rule
Attribute
Name
Data Type Description
1 Get State USINT State of the Connection
2 Instance Type I/O or Message Connection
3 Transport_class_trigger BYTE Defines the behavior of the Connection
4 Produced_connection_id UINT CAN identifier to transmit on
5 Consumed_connection_id CAN identifier to receive on
6 Initial_comm_characteristics BYTE Defines the Message Group(s) associated with
this Connection
7 Produced_connection_size UINT Maximum number of bytes transmitted across
this Connection
8 Consumed_connection_size Maximum number of bytes received across this
Connection
9 Set Expected_packet_rate Defines timing associated with this Connection
12 Watchdog_timeout_action USINT Defines how to handle Inactivity/Watchdog
timeouts
13 Get Produced_connection_path_
length
UINT Number of bytes in the
produced_connection_path attribute
14 Produced_connection_path EPATH Specifies the Application Object whose data is
to be produced by this Connection object
15 Consumed_connection_path_length UINT Number of bytes in the
Consumed_connection_path attribute
16 Consumed_connection_path EPATH Specifies the Application Object(s) that are to
receive the data consumed by this Connection
17 Set Production_inhibit_time UINT Defines minimum time between new data
production for COS connections.