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Formatting a message to read a single parameter – Rockwell Automation 25-COMM-E2P PowerFlex 25-COMM-E2P Dual-Port EtherNet/IP Adapter User Manual

Page 75

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Rockwell Automation Publication 520COM-UM003A-EN-E - June 2013

75

Using Explicit Messaging

Chapter 6

For supported classes, instances, and attributes, see

EtherNet/IP Objects on

page 129

.

Example Ladder Logic Program to Read a Single Parameter

A Get Attribute Single message is used to read a single parameter. This
CompactLogix controller 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

Formatting a Message to Read a Single Parameter

Get Attribute Single Message Configuration Screens

IMPORTANT

The explicit messaging examples in this section can be performed using any
software version of RSLogix 5000 or Logix Designer.

The read and write messaging examples in this section are for Device
parameters which use Class Code 0x93.

The Message Configuration also has a supported Service Type of “Parameter
Read” which is Class code 0x0F, Parameter Object.

Operation

Controller Tags for Single Read Message

Data Types

XIC

Execute_Single_Read_Message

BOOL

MSG

Single_Read_Message

MESSAGE

Execute_Single_Read_Message

Message
Message Control

Single_Read_Message

MSG

EN
DN
ER