Station Runtime Pro (XL)
This XL example shows you a system architecture using an HMI and two web clients.
XL System architecture
This example architecture has the following components:
- Single HMI station with typical HMI functionality and twenty web clients
- Communicates with multipleRockwell Automation®controllers and multiple third-party controllers
- Acts as a client to multiple OPC UA servers
- Acts as an OPC UA server to one client
- Logs data to an internal database
- Exchanges data with external databases via ODBC
- Requires event logging, alarming, recipes, and basic PDF reporting
The following picture shows example runtime sizing for a package that includes these application components.
HMI with Extensibility
![An example runtime sizing for a package in a XL system.](/content/dam/dita/en/factorytalk-optix/technical-content/system-architecture/images/xl-architecture-example.png/_jcr_content/renditions/original)
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