FRSKY S2F Port 2.0 Protocol Converter
The S2F Port 2.0 is FrSky's protocol bridge between the older S.Port/SBUS world and the newer F.Port 2.0 servo ecosystem. It takes the SBUS signal and S.Port telemetry from any compatible FrSky receiver and outputs up to 8 F.Port 2.0 servo control channels simultaneously — unlocking the full telemetry feedback capability of FrSky Xact series servos. With F.Port 2.0, each connected Xact servo can report position, load, temperature, and voltage back to your transmitter in real time, transforming a standard digital servo installation into a servo health monitoring system.
The S2F.PORT 2.0 integrates both S.Port and SBUS signals and translates them into multiple F.Port 2.0 signal outputs for controlling up to 8 F.Port 2.0 capable servos simultaneously. By pairing it with an SBUS and S.Port capable receiver, the telemetry features of connected Xact servos (current, voltage, temperature, position) provide feedback to your radio via F.Port 2.0. A convenient power routing feature: all channels, including S.PORT and SBUS channels, can be powered by powering either servo channel when the JP port is short-circuited.
Frequently Asked Questions:
What does S.Port to F.Port conversion mean and why would I need it?
S.Port is FrSky's older one-wire bidirectional telemetry protocol. F.Port 2.0 is the newer combined RC control + telemetry protocol used by FrSky's Xact servo line. FrSky receivers output SBUS (RC control) and S.Port (telemetry) as separate signals. The S2F Port 2.0 converter takes those two separate signals and merges them into the F.Port 2.0 format that Xact servos understand — enabling both servo control and servo telemetry feedback from a single connection per servo.
Which FrSky receivers work with the S2F Port 2.0 converter?
The S2F Port 2.0 requires a receiver that outputs both SBUS and S.Port. This covers the Archer Plus, TD Tandem, and TW Twin receiver families that have SBUS and S.Port output ports. It is not compatible with FBUS-only configurations where S.Port is not available as a separate output. Browse compatible receivers at https://www.fpvbuildsrc.com/frsky-receivers.
How many servos can the S2F Port 2.0 converter control?
The S2F Port 2.0 converter can control up to 8 F.Port 2.0 capable servos simultaneously from its multiple F.Port 2.0 output channels. Each channel independently carries both control and telemetry, so all 8 connected Xact servos can report back their telemetry to your transmitter at the same time.
Which FrSky servos is the S2F Port 2.0 compatible with?
The S2F Port 2.0 converter is designed for FrSky Xact series servos, which support F.Port 2.0. The FrSky Act series servos use standard PWM and do not have F.Port 2.0 capability. Find FrSky Xact servos including the XACT MD5301H at https://www.fpvbuildsrc.com/product-page/frsky-md5301h.
What servo telemetry data does the S2F Port 2.0 send to my transmitter?
When Xact servos are connected via the S2F Port 2.0, servo position, electrical load (current), voltage, and temperature data stream to your transmitter via S.Port. In ETHOS on a Tandem X18 or X20, these appear as telemetry fields you can display on screen and use to monitor servo health in real time — a significant advantage for large-scale aircraft where servo failures are costly.
Does FPV Builds RC offer setup support for the S2F Port 2.0?
Yes. FPV Builds RC is a U.S.-based FrSky dealer and our team can walk you through wiring the S2F Port 2.0 with compatible receivers and Xact servos. Browse all FrSky accessories at https://www.fpvbuildsrc.com/frsky.
