Rockwell Automation 25-COMM-D PowerFlex 525 DeviceNet Adapter - Manual (Page 57)

Rockwell Automation Publication 520COM-UM002A-EN-E - April 2013 57
Using Explicit Messaging Chapter 6
CompactLogix Example Ladder Logic Program to Read a Single
Parameter
A Get Attribute Single message is used to read a single parameter. This read
message example reads the value of the 16-bit parameter b003 [Output Current]
in a PowerFlex 525 drive.
Example Controller Tags to Read a Single Parameter
Example Ladder Logic to Read a Single Parameter
CompactLogix – Formatting a Message to Read a Single Parameter
Get Attribute Single Message Configuration Screens
The following table identifies the data that is required in each box to configure a
message to read a single parameter.
Operation Controller Tags for Single Read Message Data Types
XIC Execute_Single_Read_Message BOOL
MSG Single_Read_Message MESSAGE
Configuration Tab Example Value Description
Message Type CIP Generic Used to access the DPI Parameter Object in the adapter.
Service Type
(1)
Get Attribute Single This service is used to read a parameter value.
Service Code
(1)
e (Hex.) Code for the requested service.
Class 93 (3) Class ID for the DPI Parameter Object.
Instance 3 (Dec.) Instance number is the same as parameter number. (5)
Attribute 9 (Hex.) Attribute number for the Parameter Value attribute.
Execute_Single_Read_Message
Message
Message Control
Single_Read_Message
MSG
EN
DN
ER