Rockwell-automation 22-COMM-E EtherNet/IP Adapter Manual de usuario descargar pdf (Pagina 54)

6-4 Using Explicit Messaging

There are five basic events in the Explicit Messaging process. The details

of each step will vary depending on the controller. Refer to the

documentation for your controller.

Figure 6.2 Explicit Message Process

Event

1. You format the required data and set up the ladder logic program to

send an Explicit Message request to the scanner or bridge module

(download).

2. The scanner or bridge module transmits the Explicit Message

Request to the slave device over the Ethernet network.

3. The slave device transmits the Explicit Message Response back to

the scanner. The data is stored in the scanner buffer.

4. The controller retrieves the Explicit Message Response from the

scanner’s buffer (upload).

5. The Explicit Message is complete.

Performing Explicit Messages

➍

➎

➊

➋

➌

Set up and send Explicit

Message Request

Complete Explicit

Message

Retreive Explicit

Message Respnse

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Rockwell-automation 22-COMM-E EtherNet/IP Adapter Manual de usuario Pagina 54