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charge_controller.py
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charge_controller.py
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import minimalmodbus
import serial
from renogymodbus.retriable_instrument import RetriableInstrument
class RenogyChargeController(RetriableInstrument):
"""Instrument class for Renogy Charge Controllers.
Args:
* portname (str): port name
* slaveaddress (int): slave address in the range 1 to 247
"""
def __init__(self, portname, slaveaddress):
super().__init__(portname, slaveaddress)
self.serial.baudrate = 9600
self.serial.bytesize = 8
self.serial.parity = serial.PARITY_NONE
self.serial.stopbits = 1
self.serial.timeout = 1
self.mode = minimalmodbus.MODE_RTU
self.clear_buffers_before_each_transaction = True
def get_solar_voltage(self):
"""PV array input in volts"""
return self.retriable_read_register(0x0107, 1, 3, False)
def get_solar_current(self):
"""PV array input in amps"""
return self.retriable_read_register(0x0108, 2, 3, False)
def get_solar_power(self):
"""PV array input in watts"""
return self.retriable_read_register(0x0109, 0, 3, False)
def get_load_voltage(self):
"""Load output in volts"""
return self.retriable_read_register(0x0104, 1, 3, False)
def get_load_current(self):
"""Load output in amps"""
return self.retriable_read_register(0x0105, 2, 3, False)
def get_load_power(self):
"""Load output in watts"""
return self.retriable_read_register(0x0106, 0, 3, False)
def get_battery_voltage(self):
"""Battery voltage"""
return self.retriable_read_register(0x0101, 1, 3, False)
def get_battery_state_of_charge(self):
"""Battery state of charge"""
return self.retriable_read_register(0x0100, 0, 3, False)
def get_battery_temperature(self):
"""battery temperature"""
register_value = self.retriable_read_register(0x0103, 0, 3, False)
battery_temperature = register_value & 0b0000000001111111
battery_temperature_sign = (register_value & 0b0000000010000000) >> 7
battery_temperature = -battery_temperature if battery_temperature_sign == 1 else battery_temperature
return battery_temperature
def get_controller_temperature(self):
"""Temperature inside equipment"""
register_value = self.retriable_read_register(0x0103, 0, 3, False)
controller_temperature = (register_value & 0b0111111100000000) >> 8
controller_temperature_sign = (register_value & 0b1000000000000000) >> 15
controller_temperature = -controller_temperature if controller_temperature_sign == 1 else controller_temperature
return controller_temperature
def get_maximum_solar_power_today(self):
"""Max solar power today"""
return self.retriable_read_register(0x010F, 0, 3, False)
def get_minimum_solar_power_today(self):
"""Min solar power today"""
return self.retriable_read_register(0x0110, 0, 3, False)
def get_maximum_battery_voltage_today(self):
"""Maximum solar power today"""
return self.retriable_read_register(0x010C, 1, 3, False)
def get_minimum_battery_voltage_today(self):
"""Minimum solar power today"""
return self.retriable_read_register(0x010B, 1, 3, False)