https://tass.com/defense/960570

“S-111 provides radio telephone communication and encrypted data exchange among various aircraft and also command centers (ground and sea-based and airborne). Its effective range of operation is up to 1,500 kilometers,” the official said. “The system’s reliability is guaranteed by the multiple redundancy of the main functions and cutting edge technical solutions, as well as a wide range of radio channels.”

S-111 is capable of transmitting a large amount of information through centimeter wavelength radio channels inside a group of planes.

The system is based on the modular principle, which allows for building up the number of channels and the range of functions performed and for using it on any aircraft, including helicopters Ka-52 Alligator, Mi-28NM, Ka-50, PSV, military transport planes (Ilyushin-76, Ilyushin-112, Antonov-124, PAK VTA), jet fighters and frontline aviation planes (T-50, MiG-31, Sukhoi-34), long-range planes (Tupolev-22M3M, Tupolev-160M, PAK DA) and drones.”

Yes the datalink information allows the SU-57 to share its targeting information to other units. Although I say it is quite surprising that they gave us its effective range of communication.