Can an OPC Connection Be Set to Read-Only to Prevent Users from Writing to the End Device? OPC Expert supports read-only access configurations that prevent writes from reaching the connected [...]
How to Configure OPC Expert to Send Email Alerts When a Value Drops Below a Threshold OPC Expert supports automated email notifications triggered by OPC data conditions, including value threshold [...]
How OPC Excel Configurations Persist When the Workbook Is Closed and Reopened OPC Expert saves OPC configuration and query definitions within the Excel workbook file itself. When the workbook is [...]
Working with Real-Time vs. Historical OPC Data in Excel: What Changes? OPC Expert delivers both real-time and historical OPC data into Excel, but the two modes behave differently and serve [...]
How to Retrieve OPC Variable Engineering Units When Pulling Data into Excel OPC tags carry metadata properties beyond their numeric value, and engineering units are one of those properties. Whether [...]
Do OPC Expert and Excel Need to Be on the Same Computer as the OPC Server? OPC Expert and Excel do not need to be on the same computer as [...]
What Security Features Does OPC UA Offer for Industrial Communication? OPC UA incorporates security at the protocol level, making it fundamentally different from OPC Classic which relied on Windows DCOM [...]
OPC Data Archiving: Storage Volume, Performance Impact, and Compression OPC Expert's archiving capability is limited in practice by the available disk space and database capacity of the chosen storage target [...]
OPC Redundancy: Automatic Failover to a Backup OPC Server for SCADA OPC Expert supports redundant OPC server configurations where two servers, one primary and one standby, are monitored simultaneously. When [...]
Can You Run an OPC DA Client Inside a Virtual Machine? Running an OPC DA client inside a virtual machine is technically supported, but the virtualized network environment requires specific [...]
