Topology

Topology comprises physical computers (machines), clusters, server processes and I/O devices. SCADA functions such as an alarm-related event or an I/O operation run on the computers. In addition, these functions are combined into a logical entity known as a cluster and added as an alarm server or an I/O server process to computers for ease of administration.

Multiple functions from multiple clusters may run on a single machine; however, the resources available on the computer govern the feasibility of running these functions on that computer. Therefore, multiple clusters may be associated with a single computer or a single cluster may need to be configured across multiple computers.

You can configure the computers in your SCADA system and organize the processes in clusters in the Topology activity of Citect Studio. You can view, add and edit configuration information for computers, clusters, server processes and I/O devices.

The Topology activity can also be used to create and manage profiles that can be used when deploying your project.

Note: If you created a project in a version of Citect SCADA prior to version 2016, you need to run the Migration Tool to view the project's system topology in Citect Studio.

Configuring Topology

Configuring topology involves the following steps:

1. Add computers and network addresses. Each physical computer in your system needs to be identified with a unique name and IP address.
2. Add clusters. Each cluster needs to be defined with a unique name.
3. Add the required process servers. Each process server needs to be named, and assigned to a cluster and network address. Identify each server as Primary or Standby.
• Alarm Server Process
• Reports Server Process
• Trend Server Process
• I/O Server Process
• OPC DA Server Process
• EcoStruxure Web Services Server Process
4. Configure redundancy if it is required.

See Also

Published June 2018