CAN
A standard automotive protocol, CAN operates on two wires as a differential signal. These are called CAM High and CAM Low. Both of these wires have some electric potential against common ground, but the ground is not involved in the connection as just the two wires are used. CAN is a bus where multiple devices are connected on the same physical line. The bus also has to be terminated by a resistor.
Super Soco CAM
CPX
The CPX uses 250 000 bps CAM bus terminated by the scooter or the charger. This means if direct connection to the battery is required, the used CAM interface needs terminate the bus or a 120 Ohm resistor needs to be installed manually across the two pins. Each message sent contains an ID that designates a type of the message and 8 bytes of data.
| Message ID | Purpose |
|---|---|
| 504 | Charging information |
| 506 | Battery state and charging information |
| 54E | Battery parameters and information |
Please note that many parameters repeat between different message IDs. If a value is indicated to be contained within more bytes, the format is Little Endian
The Message IDs specified here apply when using the battery in A-mode or Charging mode. When using with B-mode, the IDs are +1 higher. Please see Battery connector#Gen 2 for modes description.
| Byte | Value | Unit |
|---|---|---|
| 00, 01 | Unknown | Speculation: discharge current? |
| 02, 03 | Battery Voltage | Volts * 10 |
| 04, 05 | Charging Current | Amps * 10 |
| 06 | Unknown | Only observed 0x00 |
| 07 | Unknown flag | 0x95 during charging, 0x00 otherwise |
| Byte | Value | Unit |
|---|---|---|
| 00 | Battery state bitmask | Bits from lst. sig.: 0 = charging mode, 1 = voltage on pins, 3 = initialized after connection |
| 01 | Battery state bitmask | Bits from lst. sig.: 0 = charging mode, 4 = charging in progress |
| 02, 03 | Charging current | Amps * 10 |
| 04, 05 | Voltage per cell (avg? max? min?) | Volts * 1000 |
| 06 | Unknown | Only observed 0x00 |
| 07 | Battery mode | 0x10 = charging mode, 0x20 = riding mode |
| Byte | Value | Unit |
|---|---|---|
| 00, 01 | Battery Maximum Voltage | Volts * 10 |
| 02, 03 | Battery Maximum Charge Current | Amps * 10, 0 when charged |
| 04 | State of Charge | Percents |
| 05, 06 | Battery Voltage | Volts * 10 |
| 07 | Unknown flag | 0x30 during charging, 0x00 otherwise |