ACS Protocol

Charger Protocol

Probing and Connection

Chan	From CCU to Charger	Chan	From Charger to CCU	Meaning
360	ACS,hello,CHARGER			Probe for a control system.
		360	ACS,welcome,device,information[...]	Controller reports its existence. For a CCU, device=ccu. Other devices may report differently, but the charger ignores anything except ccu.
360	ACS,interface,CHARGER			Request an interface.
		360	ACS,interface,channel	Provide the charger with a communication channel. Use a large random negative number.
		360	ACS,refuse,reason	The CCU may refuse the connection.

Once connected, the charger and CCU communicate exclusively on the specified channel.

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Initialization Messages

Sent by CCU After Connection (and at any time later):

Chan	From CCU to Charger	Meaning
channel	ACS,powertype:EL	Indicates the unit uses electrical power. Required for charging to proceed.
channel	ACS,maxcharge:maxcharge	Specifies the unit's maximum charge capacity in ticks.

Requested by Charger After Connection:

Chan	From Charger to CCU	Meaning
channel	ACS,chargersummary:	Request information about the unit's current charge state.
channel	Reply Format: power,chargepct,tickstofull	power: 0 = shutdown, 1 = active. chargepct: 0–100 (dead to fully charged). tickstofull: Ticks needed to fully charge.

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Normal Charging Sequence

Chan	From CCU to Charger	Chan	From Charger to CCU	Meaning
channel	ACS,charging:1			Indicates charging has started. (No reply expected.)
		channel	ACS,chargeseconds:n	Provides n ticks of charge. (Synonym: setcharge+:n).
channel	ACS,chargeticks:ticks			CCU reports charge level changes, including any increases.
		channel	ACS,charging:0	Indicates charging has ended.

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Additional Messages (Sent by CCU Anytime)

Chan	From CCU to Charger	Meaning
channel	ACS,dump:key,string	Debugging information for a specific script in the charger.
channel	ACS,unitdisconnect:n	Allows (n=1) or prevents (n=0) the unit from disconnecting while charging.
channel	ACS,power:n	Unit power on (n=1) or off (n=0).
channel	ACS,stopcharge:	Signals the charger to stop charging.
channel	ACS,travel:n	Allows (n=1) or prevents (n=0) the unit from moving.

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Disconnect Sequence

Chan	From CCU to Charger	Chan	From Charger to CCU	Meaning
channel	ACS,disconnect:			Tells the CCU to disconnect. (Charger expects a goodbye response.)
		channel	ACS,goodbye:	Indicates CCU is disconnecting. (May be unsolicited if CCU initiates disconnection.)
360			ACS,goodbye:	Sent by the charger if the CCU resets, losing channel information.