- OPC Server
About software maintenance service contents.
[With Free update service]
In only Enterprise Edition, you can add Free update service for 3 years or 5 years.
Free update service : You can upgrade OPC Server anytime free including major version up.
Please keep in mind that can not change the maintenance period at the time of first time purchase, and cannot extend it.
Please check detail information from "Software Maintenance Service" on Download Document Formats.