Advantech WebAccess OPC Device Communications Configuration Manual Version 4.0 rev 1

About this manual

This manual provides instructions for configuring OPC Device Communications in Advantech WebAccess Version 4.0. It explains the relationship between OPC Comports and OPC Servers, detailing how to set up connections for Local, InProcess, and Remote servers. The document outlines the steps to establish communication with automation devices via PLCs, controllers, and other hardware using the OLE for Process Control standard.

What's inside

• Introduction to OPC
• OPC Comport Properties
• Comport Number
• Auto Recover Time
• OPC Server Type
• Communication Mode
• Remote OPC Server IP Address
• Remote Port Number
• Remote Port TimeOut
• OPC Server List

Specifications

Frequently asked questions

What is the function of the Auto Recover Time setting?

It is the time waited before attempting to re-establish communications with the OPC Server if the connection fails.

How does Asynchronous Mode differ from Synchronous Mode?

Synchronous Mode requires continuous polling, whereas Asynchronous Mode allows the server to report only when a value changes.