Rockwell Automation 855T DeviceNet Stack Light User Manual - Manual (Page 55)

DeviceNet Information B-6
Publication 855T-UM001C-EN-P May 2005
Common Services
Class Code 004 (0x04): Assembly Object
The Assembly Objects bind attributes of multiple objects to allow data to or from each object
to be sent or received over a single connection.
Class Attributes
Instance Attributes
➊ The Assembly Data Byte consists of five bits, starting at bit 0. Each bit corresponds to a station position in
the stack. 1 = ON/ACTIVE.
➋ The Assembly Status Byte consists of five bits. Each of the lower five bits, starting at bit 0, corresponds to a
station position in the stack. 1 = Failed.
Table B.8
Service Code Class Instance Service Name
14 (0x0E) Yes Yes Get_Attribute_Single
16 (0x10) No Yes Set_Attribute_Single
75 (0x4B) No Yes Allocate_Master/Slave
76 (0x4C) No Yes Release_Master/Slave
Table B.9
Attribute Access Name Type Value
2 Get Max Class ID UINT 104 (0x68)
Table B.10 Assembly Object, Instance 100 Attributes
Attribute Access Name Type Value
3 Set Data BYTE ➊
Get State BYTE ➋