Connection object, Class code, Services – Rockwell Automation 20-COMM-D DeviceNet Adapter Series B FRN 2.xxx User Manual

Page 197: Instances, Instance attributes

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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

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