The controller is likely to work straight out of the bag once connected.
For P settings.
P1. Value is motor magnets (not speed signal magnets) x the internal gearing ratio.
Which hub is being used ?
P2. Is the speed signal, how many magnets ? In most cases it will be 1 or possibly 6.
P3. Is controller mode for PAS, 0 speed control or 1 for current control.
P4. Throttle operation, 0 always active or 1 pedal 1st to activate.
P5. Is voltage mode/damping and how a bar display shows the battery use as a rough guide.
The lcd3 has a live voltage read out so P5 matters not tbh.
C1. Is dependant on the PAS type used. Basic ones with mag disc the value will be 1 -3 & the all in one V12 type value 5 - 7.
C2. Phase wire switching, zero is the default. All the hubs I have used 0 worked straight out of the bag.
C3. PAS ratio gear. Tbh the description is terrible.
C3 value is the default PAS level which the LCD adopts every time you switch on. There are 6 PAS levels 0 - 5, 0 being no pas to 5 100% assist.
Value 8 the lcd will default to the last PAS level used.
C4. Is a throttle setting. 0 max throttle use, 1 is walk assist speed same as holding the walk assist button & 2 is speed limit specified.
C5. Is current limiting feature . There are two different software types used, one can reduce current by up to 5a in 0.5a steps, the other uses %and can reduce current by 50%.
C6. Backlight brightness.
C7. Cruise control O off ,1 on.
C8. Motor temp ( hubs don't have one to record).
C9. Password setting.
C10. System default restore.
C11. Coms display. 0 for lcd3/smart displays, 1 for basic displays like LCD1 or 2.
C12. Controller LVC. Default is 4 30v/40v for 36 or 48v . Values < 4 reduce lvc by 0.5v, values > 4 increase lvc by 0.5v.
C13. ABS regen.
C14. PAS signal strength 1 - 3 weak to strong.