![]() ![]() OPC & DCOM: 5 Things you need to know (Introduction).In addition to the information provided below, the OPC Training Institute has a few resources you may want to investigate:.You may print the information for your own use. and may only be reproduced with permission from Exele. The information below is copyrighted by Exele Information Systems, Inc. ![]() We are providing this information based on our experience of “what works” when diagnosing and fixing OPC connection problems. We cannot guarantee that the information below will fix your connection issues.The information below gives step-by-step information on how you can make the required DCOM changes. If you cannot connect to your running OPC Server or have problems reading or writing tag values, you may need to adjust the DCOM settings on your computer (the OPC Client) or the OPC Server Computer. TopView: Alarm Management, Alarm Notification, and Remote Monitoring.Once you have fixed your OPC connection issues, please come back and learn more about our OPC software products: We started providing the information below to assist our customers with OPC connection problems. ![]() Try our free OPC Test Tool for OPC-DA, OPC-HDA, and OPC-A&E A patch is available for Exele OPC clients TopView and OPCcalc. OPC Connection Issues Upcoming DCOM Security changes (KB5004442) may affect OPC client connections to remote OPC Servers. ![]()
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