The CLI Settings are only needed if you want to setup special things like using two ESC's on one Sbus or S-Port. For normal Copter usage it is not needed.
You will need a USB-UART adapter (like FTDI or CP2102) to use the CLI.
Connect the USB-UART like this:
KISS ESC
USB UART
RX
TX
TX
RX
GND
GND
Please look up the individual ESC wiring information to get info on the location of the RX and TX solder pads.
Its important that the USB-UART is powered at the same moment, or before the ESC gets power. Else the ESC disables the UART for safety reasons.
On the PC side, use a serial monitor like PuTTY or Arduino serial monitor. Choose the USB-UARTs COM-PORT and select 115200 baud. In Arduino serial monitor choose also active linewarp.
If you enter now „help“ it should - depending on the FW version and implemented functions - reply:
>TLM: print telemetrie
>REST: restore defaults
>INFO: system information
>CLxx: set current limit to xx=01...40[A]
>Cxxx: set current calibration to xxx=001...200[%]
>MMxx: set Motor Magnet count. xx=02...98
>SBx: set FRsky Sbus Chan. x=0...7
>SPxx: set FRsky S-Port ID xx=00...27
>SRx: set MPX SRXL Chan. x=0...7
>MSxx: set MPX Sensorbus offset xx=00...11
>SDx: set GR SumD Chan. x=0...7
>BQIT: enable or disable quiet mode
>3DM: enable or disable 3D mode
>CSD: Inverted or normal rotation direction
>CWxx: set consumption warning channel(for Gr. and MPX). chan. val. x10... so 1000=0mah, 1050=500mah and 2000=10000mah. xx = chan 00-12, 20=disabled
>FTx: force telemetry with PWM input, x=0...3, 0=off, 1=HOTT, 2=S-Port, 3=Sensorbus
>ULKV: enable or disable ultra low KV motor filter
>SCxx: set RX aux channel to play Sounds. xx=00-12, 20=disabled. 1500=mid,
>1750 play sound, <1250 next sound
