Issue
During a Sigma Transition in Building Operation, Sigma controllers and the Enterprise Server (ES) may reside on different subnets. In such cases, global data is not passed to or from the Sigma system.
Product Line
EcoStruxure Building Operation, Satchwell BAS & Sigma
Environment
- Building Operation Enterprise Server
- Satchwell Sigma
Cause
Sigma controllers communicate global data using broadcast messages (e.g., 192.168.1.255). These broadcasts are typically blocked by network switches and routers, preventing communication across subnets.
Sigma uses Link Addressing to overcome this limitation. However, if Link Addressing is not configured for the server subnet, the ES will not receive global broadcasts.
Resolution
To ensure global data is passed between the Sigma system and StruxureWare Building Operation:
- Assess the need for global data exchange during the Sigma Transition.
- If required, add a DNN3 controller to the ES subnet.
- Configure Link Addressing for the DNN3 to enable global data communication.
📘 For detailed steps, refer to the article: Link Addressing on a Sigma System.
⚠️ Important Notice
Sigma is not supported in EBO 2022 and later.
To continue supporting Sigma devices, you can implement a multi-version system:
- Keep Enterprise Servers with Sigma devices on Building Operation 3.2.
- Add a Building Operation 2022 or later Enterprise Central
- Upgrade the rest of the system to Building Operation 2022 or later.
You will not be able to upgrade EcoStruxure Building Operation servers that contain unsupported protocols, objects, or devices. Attempting to do so will result in failed upgrades or loss of functionality.
