Rockwell Automation 2098-DSD-xxx Ultra3000 Digital Servo Drives with DeviceNet - Manual (Page 61)

Publication 2098-RM004A-EN-P – August 2002
Programming Reference 2-45
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
4 Change-of-State or Cyclic 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_len
gth 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.