Rockwell Automation 855T DeviceNet Stack Light User Manual - Manual (Page 50)

Publication 855T-UM001C-EN-P May 2005
Appendix
B
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