Rockwell Automation 22-COMM-C ControlNet Adapter - Manual (Page 66)

6-6 Using Explicit Messaging
Important: Due to controller limitations, explicit messaging can only
be performed on drive parameters up to Parameter 256.
The ControlNet I/O Transfer (CIO) instruction is used for PLC-5
controllers to send explicit messages.
Formatting a Message to Read a Parameter
This read message example is for parameter d003 - [Output Current] for
a PowerFlex 4-Class drive.
For supported classes, instances, and attributes, refer to Appendix C ,
ControlNet Objects .
PLC-5 Example
Configuration Box Example Value Description
Communication
Command
Service Code
Class Number
Instance Number
Attribute Number
PLC-5 Data Table
Address
Size in Elements
Port Number
Local ControlNet Node
CIP Generic
e (Hex.)
f (Hex.)
3 (Hex.)
1 (Hex.)
N7:2
1
2
2
CIP messages are used to access the Parameter object in
the 22-COMM-C.
The code for the Get_Attribute_Single service.
The Class ID for the CIP Parameter object.
The instance number is the same as the parameter number
in Single mode operation.
The attribute number for the Parameter Value attribute.
The user-defined address for any response service data
received by the controller.
The number of elements in the response data.
The channel on the PLC-5 used for the ControlNet network.
The node address of the 22-COMM-C adapter.