User guide

7-4 EtherNet/IP Communications Module
7.3 Performing Explicit Messages
Important: There are five basic events in the Explicit Messaging
process defined below. The details of each step will
vary depending on the controller. Refer to the
documentation for your controller.
➊
➍
➎
Retrieve Parameter
Message Response
Complete Parameter
Message
Set up and send
Parameter Message
➌
➋
➊
Format the required data and set up the ladder
logic program to send an Explicit Message
request to the scanner or bridge module
(download).
➋
The scanner or bridge module transmits the
Explicit Message Request to the slave device
over the EtherNet/IP network.
➌
The slave device transmits the Explicit Message
Response back to the scanner. The data is
stored in the scanner buffer.
➍
The controller retrieves the Explicit Message
Response from the scanner’s buffer (upload).
➎
The Explicit Message is complete.
Figure 7.2 – Explicit Message Process