Rockwell-automation 20-COMM-ER 20-COMM-ER Dual-Port EtherNet/IP Commun Manual do Utilizador descarregar pdf (Página 121)

Rockwell Automation Publication 20COMM-UM015B-EN-P - July 2013 121

Using Explicit Messaging Chapter 6

Explicit Messaging Using RSLogix 5000 Software, All Versions

ControlLogix Controller Example Ladder Logic Program to Read a Single

Parameter

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.

Important:See Table 17 on page 106

for limitations of PowerFlex 7-Class

drives when using DPI Parameter Object Class code 0x93 for

explicit messaging.

Table 22 - Example Controller Tags to Read a Single Parameter

Figure 49 - 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

1 2 ... 116 117 118 119 120 121 122 123 124 125 126 ... 237 238

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Rockwell-automation 20-COMM-ER 20-COMM-ER Dual-Port EtherNet/IP Commun Manual do Utilizador Página 121