Rockwell-automation 855T DeviceNet Stack Light User Manual Instrukcja Użytkownika Pobierz pdf (Strona 57)

DeviceNet Information B-8

Publication 855T-UM001C-EN-P May 2005

Class Code 0x0005: Connection Object

No class attributes will be supported for the Connection Object.

Three instances of the Connection Object will be supported. Instance 1 will be the explicit

message connection, instance 2 will be the polled IO connection, and instance 4 will be the

COS/Cyclic IO connection.

Instance 1 is the Predefined Group 2 Connection Set Explicit Message Connection. The

following instance 1 attributes will be supported:

Table B.13

Attribute

Access

Rule

Name Data Type Value

1 Get State USINT 0 = nonexistent

1 = configuring

3 = established

4 = timed out

2 Get Instance Type USINT

0 = Explicit Message

3 Get Transport Class Trigger BYTE 0x83 — Server,

Transport Class 3

4 Get Produced Connection ID UINT 10xxxxxx011

xxxxxx = node address

5 Get Consumed Connection ID UINT 10xxxxxx100

xxxxxx = node address

6 Get Initial Comm. Characteristics BYTE 0x22

7 Get Produced Connection Size UINT 0x61

8 Get Consumed Connection Size UINT 0x61

9 Get/Set Expected Packet Rate UINT

In milliseconds

12 (0C

hex

) Get Watchdog Action USINT 01 = auto delete

03 = deferred delete

13 (0D

hex

) Get Produced Connection Path

Length

UINT 0

14 (0E

hex

) Get Produced Connection Path EPATH Empty

15 (0F

hex

) Get Consumed Connection Path

Length

UINT 0

16 (10

hex

) Get Consumed Connection Path EPATH Empty

1 2 ... 52 53 54 55 56 57 58 59 60 61 62 ... 71 72

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