Rockwell Automation 25-COMM-D PowerFlex 525 DeviceNet Adapter - Manual (Page 66)

66 Rockwell Automation Publication 520COM-UM002A-EN-E - April 2013
Chapter 6 Using Explicit Messaging
Example Controller Tags to Write Multiple Parameters
Example Ladder Logic to Write Multiple Parameters
CompactLogix – Formatting a Message to Write Multiple Parameters
Scattered Write Multiple Message Configuration Screens
The following table identifies the data that is required in each box to configure a
message to write multiple parameters.
Operation Controller Tags for Scattered Write Message Data Types
XIC Execute_Scattered_Write_Message BOOL
MSG Scattered_Write_Message MESSAGE
IMPORTANT If you need to make frequent parameter changes using Explicit Messages, set
Host parameter C121 [Comm Write Mode] to 1 “RAM only”.
Configuration Tab Example Value Description
Message Type CIP Generic Used to access the DPI Parameter Object in the adapter.
Service Type
(1)
Custom Required for scattered messages.
Service Code (1) 0x34 (Hex.) Code for the requested service.
Class 93
(4)
Class ID for the DPI Parameter Object.
Instance 0 (Dec.) Required for scattered messages.
Attribute (2) 0 (Hex.) Required for scattered messages.
Source Element Scattered_Write_Request
(5)
Name of the tag for any service data to be sent from the scanner
or bridge to the adapter/drive.
Source Length 20 bytes
(5)
Number of bytes of service data to be sent in the message.
Destination Scattered_Write_Response
(6)
The tag where the data that is read is stored.
Communication Tab Example Value Description
Execute_Scattered_Write_Message
Message
Message Control
Scattered_Write_Message
MSG
EN
DN
ER