Rockwell Automation Allen-Bradley 856T-B24LC - Page 48

48 Rockwell Automation Publication 856T-UM001B-EN-P - April 2021
Chapter 7 Message Structure and Configuration Example
The following table identifies the data that is required to complete the Message
Configuration dialog box to read the Vendor Name from the 856T-B24LC
module:
Item Description Value
1
Message Type
The message type is CIP™ Generic.
CIP Generic
2
Service Type
The service type is Custom.
Custom
3
Service Code
Established from Service Code Table.
4D
4
Class
The class is 3a3.
3a3
5
Instance
Established from Appendix B. Identifies the Index for the Parameter being
read.
16
6
Attribute
The Attribute value is 0.
0
7
Source Element
Contains the name of the tag of the channel number to be read.
Write_ Assembly [0]
8
Source Length
This box contains the number of bytes of service data to be sent or received in
message. Defined in Data Structure Tables.
1 byte
9
Destination Element
First element of the destination Array.
Read_ Assembly [0]
1
2
3
4
5
6
7
8
9