Niagara and Reflow sit at the supervisory layer. Desigo PXC4, PXC5 and PXC7 controllers run native automation, with TX-I/O, DXR and third-party BACnet equipment below. Siemens ABT Site remains the native controller engineering environment.
One responsive Reflow experience across the building portfolio.
Graphics, histories, alarms and cross-platform integration.
Selected to match the owner's network and security standard.
Native Siemens plant and system automation.
Distributed I/O, room automation and third-party equipment.
BACnet/SC use and supervisory integration must be verified against the exact PXC generation, software release and owner certificate-management standard.
No platform is best at everything. We match the system to the building, the people who will support it, and the owner's long-term plan.
The right Siemens recommendation starts with the installed base. Where sound field infrastructure can be preserved, a phased path can reduce disruption and avoid unnecessary replacement.
Owners who want to modernize in phases while evaluating which field assets are still worth keeping.
Projects that can benefit from PXC scalability and a deliberately engineered BACnet/SC approach.
APOGEE/TALON databases, wiring and device compatibility should be validated before budgets promise reuse.
Owners searching for a Siemens APOGEE upgrade or TALON replacement have options. The right one starts with what’s in your building — not a catalog.
Existing systems don’t stop working overnight, but parts, licenses and factory support get harder to source over time. Siemens publishes a modernization pathway toward Desigo, and UCS builds phased plans around it — starting with a field-verified inventory of what’s actually installed, so budgets never assume reuse that hasn’t been checked.
Usually not. Where field wiring, TX-I/O and viable devices can be preserved, a phased APOGEE-to-Desigo migration modernizes the supervisory and automation layers first — reducing disruption and spreading cost across budget cycles.
Yes — that’s the UCS standard architecture. Desigo PXC controllers run native Siemens automation while Tridium Niagara and NiagaraMods Reflow provide graphics, alarms, histories and one consistent operator experience across every platform in your portfolio.
These links support the high-level architecture above. Final design depends on controller generation, software versions, licensing, cybersecurity standards and site conditions.
We can inventory what is installed, identify what is reusable and develop a Niagara-centered modernization roadmap.
