Rockwell-automation 855T DeviceNet Stack Light User Manual Manual do Utilizador descarregar pdf (Página 50)

Publication 855T-UM001C-EN-P May 2005

Appendix

DeviceNet Information

General Information

The 855T-Dxx (Multifunction I/O) device operates as a slave on the DeviceNet network.

The unit supports Explicit Messages and Polled I/O Messages of the predefined master/

slave connection set. It does not support the Explicit Unconnected Message Manager

(UCMM).

The device supports five discrete outputs, one for each possible stack position.

Message Types

As a group 2 slave device, the 855T-Dxx supports the following message types.

xxxxxx = Node Address

Class Services

As a group 2 slave device, the 855T-Dxx supports the following class services and instance

services.

Table B.1 Supported Message Types

CAN Identifier Group 2 Message Type

10xxxxxx111 Duplicate MAC ID Check Messages

10xxxxxx110 Unconnected Explicit Request Messages

10xxxxxx101 Master I/O Poll Command Message

10xxxxxx100 Master Explicit Request Message

Table B.2 Class Services

Service Code Service Name Service Code Service Name

14 (0x0E) Get Attribute Single 75 (0x4B) Allocate Group 2 Identifier Set

16 (0x10) Set Attribute Single 76 (0x4C) Release Group 2 Identifier Set

1 2 ... 45 46 47 48 49 50 51 52 53 54 55 ... 71 72

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