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Troubleshooting OPC and DCOM: Quick Start Guide

OPC technology provides an interoperable, reliable and secure communication platform. But the initial troubleshooting can be difficult because each problem masks itself with a variety of symptoms. This tutorial covers the 5 most common problems, their causes, and how to resolve them.

A well structured approach can quickly solve the following 5 common problems:

1. Unable to see list of available OPC servers on remote computer
2. Can’t connect to OPC Server on remote PC
3. Polling succeeds but automatic (asynchronous) data updates fail
4. All items on OPC server show Bad Quality
5. PC with OPC Server has unusually high CPU Usage

After identifying the specific problem you are having, this tutorial describes their typical causes, and the required steps to solve them.

Click the links below to instantly view the multimedia tutorials:

Introduction - 2m 39sec
Part 1: Can't Browse OPC Servers on Remote PC - 9m 47sec
Part 2: Can't Connect to OPC Servers on Remote PC
        & All Items Show Bad Quality - 10m 48sec
Part 3: OPC Client Doesn't Receive Data Updates - 8m 12sec
Part 4: PC with OPC Server has High CPU Usage - 7m 39sec

Also available for download: "Troubleshooting OPC and DCOM: Quick Start Guide" whitepaper.