Rockwell Automation 56RF RFID System User Manual - Manual (Page 134)

134 Rockwell Automation Publication 56RF-UM001A-EN-P - October 2011
Appendix B CIP Information
Assembly Object Class
Code 0x0004 The Assembly Object binds attributes of multiple objects, which allows data to or
from eachobject to be sent or received over a single connection. Controllers that
do not have the ability to create and establish a class 1 (scheduled) connection
can utilize the Assembly Object in a Message Instruction to obtain both the input
and output assemblies of the RFID interface.
The following services will be implemented for the Assembly Object:
Different connection instances are needed for each RFID interface based on the
model. These class 3 connection instances are different than the class 1 instances
used by a ControlLogix or CompactLogix processor due to the limitations within
the SLC and Micrologix for handling Send and Receive data.
Use the table below to determine the class 3 connection instance and Send /
Receive size for your unit:
Table 24 - Class 3 Connection Instances with size (in bytes)
Sevice Code Implemented for: Service Name
Class Instance
0x0E Yes Yes Get_Attribute_Single
0x10 No Yes Set_Attribute_Single
0x18 No Yes Get_Member
Cat. No. Input Size Output Size Config Size
56RF-IN-IPS12 120 64 130 64 103 16
56RF-IN-IPD22 121 116 131 124 109 20
56RF-IN-IPD22A 122 116 132 124 112 24