The order of scanner usage is Codex Scanners then Synthesis Scanners. Once all Codex Scanners have been used, Helios will begin to consume Synthesis Scanners.
It will not scan targets with complete codex entries.
If one has a Sol-Battery Widget, these scans will not drain charges from the Synthesis Scanners, allowing for free scanning. (If you also have Codex Scanners equipped it will not use the Codex Scanner and instead use the Synthesis Scanners. (if it has Sol-Battery Widget))
Fixed Helios' Investigator Precept not properly displaying/calculating its max rank and perpetually behaving like a rank 0 mod. It will also receive a target lock so it doesn’t Get distracted during scans so easily.