Rockwell Automation 25B PowerFlex 525 Embedded EtherNet/IP Adapter User Manual
Page 75
Rockwell Automation Publication 520COM-UM001B-EN-E - March 2013
75
Using Explicit Messaging
Chapter 6
Example Ladder Logic to Read Multiple Parameters
CompactLogix – Formatting a Messageto Read Multiple Parameters
Scattered Read Message Configuration Screens
The following table identifies the data that is required in each box to configure a
message to read multiple parameters.
Configuration Tab
Example Value
Description
Message Type
Service Type
(1)
Service Code
(1)
Class
Instance
Attribute
Source Element
Source Length
Destination
(1) The default setting for Service Type is “Custom,” enabling entry of a Service Code not available from the Service Type pull-down
menu. When choosing a Service Type other than “Custom” from the pull-down menu, an appropriate Hex. value is automatically
assigned to the Service Code box which is dimmed (unavailable).
CIP Generic
Custom
0x32 (Hex.)
93
(3)
0 (Dec.)
0 (Hex.)
Scattered_Read_Request
(4)
20 bytes
(4)
Scattered_Read_Response
(5)
(3) See
Explicit Messaging Class Code Compatibility with PowerFlex 525 Drives on page 70
for limitations of PowerFlex 525 drives when
using DPI Parameter Object Class code 0x93 for explicit messaging.
Used to access the DPI Parameter Object in the adapter.
Required for scattered messages.
Code for the requested service.
Class ID for the DPI Parameter Object.
Required for scattered messages.
Required for scattered messages.
Name of the tag for any service data to be sent from the scanner
or bridge to the drive.
Number of bytes of service data to be sent in the message.
The tag where the data that is read is stored.
Communication Tab Example Value
Description
Path
(2)
(2) Click Browse to find the path, or type in the name of the device listed in the I/O Configuration folder (for this example,
PowerFlex_52X_Drive).
PowerFlex_52X_Drive
The path is the route that the message will follow.
Tag Tab
Example Value
Description
Name
Scattered_Read_Message
The name for the message.
Execute_Scattered_Read_Message
Message
Message Control
Scattered_Read_Message
MSG
EN
DN
ER