What LonWorks FT-10 Is
FT-10 is a common twisted-pair physical layer used in legacy LonWorks deployments. It shows up in older HVAC and building-control trunks where the network is still operational but the supervisory layer is being modernized.
Why It Matters
- Field wiring and segment assumptions still affect communication stability.
- Retrofit projects need accurate trunk and device records before mapping begins.
- The physical layer is only part of the job; XIF files and Neuron IDs still matter.