This is an example of the ACS protocol in action for charging.
Abbreviations
RX is received by Unit from Charger
RX-i is received by Unit from Charger on interface channel
TX is transmit to Charger from Unit
CONNECT:
The connect response may have an additional parameter called 'caps' which is short for capabilities. Ionization controllers (ie. Helix, Echo, Prisma) will have 'ionization' as a value for 'caps'.