alfen-eve-modbus-tcp 0.0.17

Alfen Eve Car Charger parser library

alfen_eve_modbus_tcp

alfen_eve_modbus_tcp is a python library that collects data from Alfen Eve Car Chargers over Modbus TCP.

Installation

To install, either clone this project and install using setuptools:

python3 setup.py install

or install the package from PyPi:

pip3 install alfen-eve-modbus-tcp

Usage

The script example.py provides a minimal example of connecting to and displaying all registers from an Alfen Eve Car Charger over Modbus TCP.

usage: example.py [-h] [--timeout TIMEOUT] [--json] host port

positional arguments:
  host               Modbus TCP address
  port               Modbus TCP port

optional arguments:
  -h, --help         show this help message and exit
  --timeout TIMEOUT  Connection timeout
  --json             Output as JSON

Output:

Car Charger(192.168.2.136:502: timeout=1, retries=3):

Registers:
	Name: DIE_14966
	Manufacturer: Alfen NV
	Modbus Table Version: 1
	Firmware Version: 6.1.0-4159
	Station Serial Number: ACE0287582
	Date Year: 2023
	Date Month: 7
	Date day: 15
	Time hour: 21
	Time minute: 3
	Time second: 39
	Uptime: 125689398
	Time zone: 60
	Station Active Maximum Current: 25
	Temperature: 35.9375
	OCPP state: 1
	Nr of sockets: 1
	Availability: Operable
	Mode 3 state: NotConnected, A
	Actual Applied Max Current for Socket: 6.0
	Remaining time before fallback to safe current: 0
	Meter State: Initialised & Updated
	Meter Last Value Timestamp: 334
	Meter Type: RTU
	Voltage Phase L1N: 238.1899871826172
	Voltage Phase L2N: 240.63999938964844
	Voltage Phase L3N: 238.4399871826172
	Voltage Phase L1L2: nan
	Voltage Phase L2L3: nan
	Voltage Phase L3L1: nan
	Current N: nan
	Current Phase L1: 0.0
	Current Phase L2: 0.0
	Current Phase L3: 0.0
	Current Sum: nan
	Power Factor Phase L1: nan
	Power Factor Phase L2: nan
	Power Factor Phase L3: nan
	Power Factor Sum: 0.0
	Frequency: 50.000003814697266
	Real Power Phase L1: nan
	Real Power Phase L2: nan
	Real Power Phase L3: nan
	Real Power Sum: 0.0
	Apparent Power Phase L1: nan
	Apparent Power Phase L2: nan
	Apparent Power Phase L3: nan
	Apparent Power Sum: nan
	Reactive Power Phase L1: nan
	Reactive Power Phase L2: nan
	Reactive Power Phase L3: nan
	Reactive Power Sum: nan
	Real Energy Delivered Phase L1: nan
	Real Energy Delivered Phase L2: nan
	Real Energy Delivered Phase L3: nan
	Real Energy Delivered Sum: 31.0
	Real Energy Consumed Phase L1: nan
	Real Energy Consumed Phase L2: nan
	Real Energy Consumed Phase L3: nan
	Real Energy Consumed Sum: nan
	Apparent Energy Phase L1: nan
	Apparent Energy Phase L2: nan
	Apparent Energy Phase L3: nan
	Apparent Energy Sum: nan
	Reactive Energy Phase L1: nan
	Reactive Energy Phase L2: nan
	Reactive Energy Phase L3: nan
	Reactive Energy Sum: nan
	Modbus Slave Max Current: 6.0
	Active Load Balancing Safe Current: 6.0
	Modbus Slave Received Setpoint Accounted For: Yes
	Phases used for charging: 3
	SCN Name: 
	SCN Sockets: 0
	SCN Total Consumption Phase L1: 0.0
	SCN Total Consumption Phase L2: 0.0
	SCN Total Consumption Phase L3: 0.0
	SCN Actual Max Current Phase L1: 0.0
	SCN Actual Max Current Phase L2: 0.0
	SCN Actual Max Current Phase L3: 0.0
	SCN Max Current Phase L1: 6.0
	SCN Max Current Phase L2: 6.0
	SCN Max Current Phase L3: 6.0
	Max current valid time L1: 0
	Max current valid time L2: 0
	Max current valid time L3: 0
	SCN safe current: 6.0
	SCN Modbus Slave Max Current enable: Disabled

Passing --json returns:

{
    "c_name": "DIE_14966",
    "c_manufacturer": "Alfen NV",
    "c_modbus_table_version": 1,
    "c_firmware_version": "6.1.0-4159",
    "c_platform_type": "NG910",
    "c_station_serial_number": "ACE0287582",
    "c_date_year": 2023,
    "c_date_month": 7,
    "c_date_day": 15,
    "c_time_hour": 21,
    "c_time_minute": 10,
    "c_time_second": 48,
    "c_uptime": 126118547,
    "c_time_zone": 60,
    "station_active_max_current": 25,
    "temperature": 35.8125,
    "ocpp_state": 1,
    "nr_of_sockets": 1,
    "meter_state": 3,
    "meter_last_value_timestamp": 29,
    "meter_type": 0,
    "voltage_phase_L1N": 237.8199920654297,
    "voltage_phase_L2N": 240.75999450683594,
    "voltage_phase_L3N": 238.80999755859375,
    "voltage_phase_L1L2": NaN,
    "voltage_phase_L2L3": NaN,
    "voltage_phase_L3L1": NaN,
    "current_N": NaN,
    "current_phase_L1": 0.0,
    "current_phase_L2": 0.0,
    "current_phase_L3": 0.0,
    "current_sum": NaN,
    "power_factor_phase_L1": NaN,
    "power_factor_phase_L2": NaN,
    "power_factor_phase_L3": NaN,
    "power_factor_sum": 0.0,
    "frequency": 50.02000427246094,
    "real_power_phase_L1": NaN,
    "real_power_phase_L2": NaN,
    "real_power_phase_L3": NaN,
    "real_power_sum": 0.0,
    "apparent_power_phase_L1": NaN,
    "apparent_power_phase_L2": NaN,
    "apparent_power_phase_L3": NaN,
    "apparent_power_sum": NaN,
    "reactive_power_phase_L1": NaN,
    "reactive_power_phase_L2": NaN,
    "reactive_power_phase_L3": NaN,
    "reactive_power_sum": NaN,
    "real_energy_delivered_phase_L1": NaN,
    "real_energy_delivered_phase_L2": NaN,
    "real_energy_delivered_phase_L3": NaN,
    "real_energy_delivered_sum": 31.0,
    "real_energy_consumed_phase_L1": NaN,
    "real_energy_consumed_phase_L2": NaN,
    "real_energy_consumed_phase_L3": NaN,
    "real_energy_consumed_sum": NaN,
    "apparent_energy_phase_L1": NaN,
    "apparent_energy_phase_L2": NaN,
    "apparent_energy_phase_L3": NaN,
    "apparent_energy_sum": NaN,
    "reactive_energy_phase_L1": NaN,
    "reactive_energy_phase_L2": NaN,
    "reactive_energy_phase_L3": NaN,
    "reactive_energy_sum": NaN,
    "availability": 1,
    "mode_3_state": "A",
    "actual_applied_max_current": 6.0,
    "modbus_slave_max_current_valid_time": 0,
    "modbus_slave_max_current": 6.0,
    "active_load_balancing_safe_current": 6.0,
    "modbus_slave_received_setpoint_accounted_for": 1,
    "charge_using_1_or_3_phases": 3,
    "scn_name": "",
    "scn_sockets": 0,
    "scn_total_consumption_phase_l1": 0.0,
    "scn_total_consumption_phase_l2": 0.0,
    "scn_total_consumption_phase_l3": 0.0,
    "scn_actual_max_current_phase_l1": 0.0,
    "scn_actual_max_current_phase_l2": 0.0,
    "scn_actual_max_current_phase_l3": 0.0,
    "scn_max_current_phase_l1": 6.0,
    "scn_max_current_phase_l2": 6.0,
    "scn_max_current_phase_l3": 6.0,
    "remaining_valid_time_max_current_phase_l1": 0,
    "remaining_valid_time_max_current_phase_l2": 0,
    "remaining_valid_time_max_current_phase_l3": 0,
    "scn_safe_current": 6.0,
    "scn_modbus_slave_max_current_enable": 0
}

Connecting

If you wish to use Modbus TCP the following parameters are relevant:

host = IP or DNS name of your Modbus TCP device, required
port = TCP port of the Modbus TCP device, required

Connecting to the car charger:

    >>> import alfen_eve_modbus_tcp

    # Car Charger over Modbus TCP
    >>>  car_charger = alfen_eve_modbus_tcp.CarCharger(host="192.168.2.136", port=502)

Test the connection, remember that only a single connection at a time is allowed:

    >>> car_charger.connect()
    True

    >>> car_charger.connected()
    True

While it is not necessary to explicitly call connect() before reading registers, you should do so before calling connected(). The connection can be closed by calling disconnect().

Printing the class yields basic device parameters:

    >>> car_charger
    Car Charger(192.168.2.136:502: timeout=1, retries=3)

Reading Registers

Reading a single input register by name:

    >>> car_charger.read("c_manufacturer")
    {'c_manufacturer': 'Alfen NV'}

Read all input registers using read_all():

    >>> car_charger.read_all()
    {
        'c_name': 'DIE_14966',
        'c_manufacturer': 'Alfen NV',
        'c_modbus_table_version': 1,
        'c_firmware_version': '6.1.0-4159',
        'c_platform_type': 'NG910',
        'c_station_serial_number': 'ACE0287582',
        'c_date_year': 2023,
        'c_date_month': 7,
        'c_date_day': 15,
        'c_time_hour': 21,
        'c_time_minute': 23,
        'c_time_second': 45,
        'c_uptime': 126895863,
        'c_time_zone': 60,
        'station_active_max_current': 25,
        'temperature': 35.75,
        'ocpp_state': 1,
        'nr_of_sockets': 1,
        'meter_state': 3,
        'meter_last_value_timestamp': 602,
        'meter_type': 0,
        'voltage_phase_L1N': 239.1999969482422,
        'voltage_phase_L2N': 241.25,
        'voltage_phase_L3N': 238.6599884033203,
        'voltage_phase_L1L2': nan,
        'voltage_phase_L2L3': nan,
        'voltage_phase_L3L1': nan,
        'current_N': nan,
        'current_phase_L1': 0.0,
        'current_phase_L2': 0.0,
        'current_phase_L3': 0.0,
        'current_sum': nan,
        'power_factor_phase_L1': nan,
        'power_factor_phase_L2': nan,
        'power_factor_phase_L3': nan,
        'power_factor_sum': 0.0,
        'frequency': 50.060001373291016,
        'real_power_phase_L1': nan,
        'real_power_phase_L2': nan,
        'real_power_phase_L3': nan,
        'real_power_sum': 0.0,
        'apparent_power_phase_L1': nan,
        'apparent_power_phase_L2': nan,
        'apparent_power_phase_L3': nan,
        'apparent_power_sum': nan,
        'reactive_power_phase_L1': nan,
        'reactive_power_phase_L2': nan,
        'reactive_power_phase_L3': nan,
        'reactive_power_sum': nan,
        'real_energy_delivered_phase_L1': nan,
        'real_energy_delivered_phase_L2': nan,
        'real_energy_delivered_phase_L3': nan,
        'real_energy_delivered_sum': 31.0,
        'real_energy_consumed_phase_L1': nan,
        'real_energy_consumed_phase_L2': nan,
        'real_energy_consumed_phase_L3': nan,
        'real_energy_consumed_sum': nan,
        'apparent_energy_phase_L1': nan,
        'apparent_energy_phase_L2': nan,
        'apparent_energy_phase_L3': nan,
        'apparent_energy_sum': nan,
        'reactive_energy_phase_L1': nan,
        'reactive_energy_phase_L2': nan,
        'reactive_energy_phase_L3': nan,
        'reactive_energy_sum': nan,
        'availability': 1,
        'mode_3_state': 'A',
        'actual_applied_max_current': 6.0,
        'modbus_slave_max_current_valid_time': 0,
        'modbus_slave_max_current': 6.0,
        'active_load_balancing_safe_current': 6.0,
        'modbus_slave_received_setpoint_accounted_for': 1,
        'charge_using_1_or_3_phases': 3,
        'scn_name': '',
        'scn_sockets': 0,
        'scn_total_consumption_phase_l1': 0.0,
        'scn_total_consumption_phase_l2': 0.0,
        'scn_total_consumption_phase_l3': 0.0,
        'scn_actual_max_current_phase_l1': 0.0,
        'scn_actual_max_current_phase_l2': 0.0,
        'scn_actual_max_current_phase_l3': 0.0,
        'scn_max_current_phase_l1': 6.0,
        'scn_max_current_phase_l2': 6.0,
        'scn_max_current_phase_l3': 6.0,
        'remaining_valid_time_max_current_phase_l1': 0,
        'remaining_valid_time_max_current_phase_l2': 0,
        'remaining_valid_time_max_current_phase_l3': 0,
        'scn_safe_current': 6.0,
        'scn_modbus_slave_max_current_enable': 0
    }

Register Details

If you need more information about a particular register, to look up the units or enumerations, for example:

    >>> car_charger.registers["modbus_slave_max_current"]
        # unit, address, length, type, datatype, valuetype, name, unit, batching
        (
            1,
            1210,
            2,
            <registerType.HOLDING: 2>,
            <registerDataType.FLOAT32: 6>,
            <class 'float'>,
            'Modbus Slave Max Current',
            'A',
            7
        )

Contributing

Contributions are more than welcome.