Rockwell-automation MD65 EtherNet/IP Communication Module Manual de usuario descargar pdf (Pagina 62)

7-8

EtherNet/IP Communications Module

7.4.2 Set Attribute Single Message Example

A Set Attribute Single message writes a value for a single attribute.

In this example, we write the value of a parameter in an MD65 drive.

Message Format Example

Table 7.2 identifies key settings for the data format:

Figure 7.7 – Message Format for a Set Attribute Single Message

MD65_Demo

Table 7.2 – Key Settings for Data Format

Configuration Value Description Page

Service Type

Service Code

Class

Instance

Attribute

Source Element

Source Length

Set Attribute Single

10 (Hex.)

f (Hex.)

39 (Dec.)

1 (Hex.)

ParameterWriteValue

2 bytes

Write parameter data

Set_Attribute_Single

MDI Parameter Object

Parameter 39 (Accel Time 1)

Parameter Value

Controller tag for write data

One 16-bit word of data is sent

C-27

C-12

C-24

C-25

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1. The default setting for Service Type is “Custom,” which enables you to

enter a Service Code that is not available from the Service Type pulldown

menu. When you select a Service Type other than “Custom” from the

pulldown menu, an appropriate Hex. value is automatically assigned to

the Service Code box which grays out (unavailable).

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Rockwell-automation MD65 EtherNet/IP Communication Module Manual de usuario Pagina 62