Rockwell Automation 1769-SM1 Compact I/O to DPI/SCANport Module User Manual

Page 69

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MicroLogix 1500 Ladder Example Program

5-15

Get Attributes Scattered Example

The Get Attributes Scattered service can be used with the DPI Parameter
object to read the value of more than one parameter with a single
message instruction.

In this example, a read of PowerFlex 70 drive parameters 1 - [Output
Freq], 3 - [Output Current], and 6 - [Output Voltage] is being performed.

The Message Configuration screen in RSLogix 500 for this example is
shown in

Figure 5.9

. It is assumed that the 1769-SM1 occupies slot

number 1, and that the PowerFlex 70 drive is connected to the 1769-SM1
channel 1.

Refer to

Table 5.A on page 5-11

for a description of the content in each

box.

Figure 5.9 Get Attributes Scattered Read Message Configuration Screen

Refer to

Appendix C

,

Object Specific Services

for information on the

message data format.

Configuration

Value

Description

Refer to…

Service Code
Class

4B (hex)
93 (hex)

Get_Attribute_Scattered
DPI Parameter Object

C-11
C-8

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