Article - CS383964
OPC Client Driver Performance Considerations in PTC Kepware Products
Modified: 01-Dec-2025
Applies To
- Kepware Server (formerly KEPServerEX) 5.20.396.0 to 6.18
- ThingWorx Kepware Server (legacy) 8.0 to 6.18
- Every OPC server has performance limitations, and they are not the same
- Client applications have the potential to issue requests that exceed the limitations of the servers they are connected to
- It is recommended to limit the number of tag items requested per OPC group created on the target to optimize performance for tag updates from the server
- Information below also applies to all versions of the PTC OPC Aggregator product
Description
- Imported tags showing bad quality in OPC Quick Client
- Tag updates are too slow for imported tags
- Random tags showing bad quality after restart/reinitialize
This is a printer-friendly version of Article 383964 and may be out of date. For the latest version click CS383964