Connection object, Class code, Services – Rockwell Automation 20-COMM-D DeviceNet Adapter Series B FRN 2.xxx User Manual
Page 197: Instances, Instance attributes

DeviceNet Objects
C-3
20-COMM-D DeviceNet Adapter User Manual
Publication 20COMM-UM002G-EN-P
Connection Object
Class Code
Services
Instances
Instance Attributes
See the DeviceNet specification for more information.
Hexadecimal Decimal
0x05
5
Implemented for:
Service Code Class
Instance
Service Name
0x0E
Yes
Yes
Get_Attribute_Single
Instance
Description
1
Master-Slave Explicit Message Connection
2
Polled I/O Connection
4
Change of State/Cyclic Connection
6…10
Explicit Message Connection
Attribute ID Access Rule Name
Data Type Description
1
Get
State
USINT
0 = Nonexistent
1 = Configuring
2 = Waiting for connection ID
3 = Established
4 = Timed out
2
Get
Instance Type
USINT
0 = Explicit message
1 = I/O message
3
Get
Transport
USINT
The Transport Class Trigger for this instance
4
Get
Produced Cnxn ID
USINT
CAN identifier to transmit on
5
Get
Consumed Cnxn ID
USINT
CAN identifier to receive on
6
Get
Initial Comm Char
USINT
Defines the DeviceNet message groups that the Tx/Rx
Cnxn’s apply
7
Get
Produced Cnxn Size
UINT
Max bytes to transmit across this connection
8
Get
Consumed Cnxn Size
UINT
Max bytes to receive across this connection
9
Get/Set
EPR
UINT
Expected Packet Rate (timer resolution = 2 msec.)
12
Get/Set
Watchdog Action
USINT
0 = Transition to timed out
1 = Auto delete
2 = Auto reset
13
Get
Produced Path Length
UINT
Number of bytes of data in the produced connection path
14
Get
Produced Connection Path
ARRAY of
UINT
Byte stream which defines Application objects whose data
is to be produced by this Connection object
15
Get
Consumed Path Length
UNIT
Number of bytes of data in the consumed connection path
16
Get
Consumed Connection Path ARRAY of
UINT
Byte stream which defines Application objects whose data
is to be consumed by this Connection object