Rockwell Automation 20-COMM-D DeviceNet Adapter Series B FRN 2.xxx User Manual

Page 134

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6-6

Using Explicit Messaging

20-COMM-D DeviceNet Adapter User Manual

Publication 20COMM-UM002G-EN-P

ControlLogix Controller Example Ladder Logic Program to Read a Single Parameter
Using RSLogix 5000 Software, Any Version

A Get Attribute Single message is used to read a single parameter. This read
message example reads the value of parameter 003 - [Output Current] in a
PowerFlex 7-Class drive.

See

DPI Parameter Object on page C-13

(Class Code 0x93) for parameter

numbering.

Important: See

Table 6.A on page 6-2

for limitations of PowerFlex 7-Class

and PowerFlex 750-Series drives when using DPI Parameter
Class code 0x93 for explicit messaging.

Table 6.C Example Controller Tags to Read a Single Parameter

Figure 6.4 Example Ladder Logic to Read a Single Parameter

Operand

Controller Tags for Single Read Message

Data Type

XIC

Execute_Single_Read_Message

BOOL

MSG

Single_Read_Message

MESSAGE

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