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Copy pathSymoGen24Connector.py
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SymoGen24Connector.py
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from pyModbusTCP.client import ModbusClient
from pyModbusTCP import utils
class SymoGen24:
def __init__(self, ipaddr, port, auto=True):
if (auto):
self.modbus = ModbusClient(host=ipaddr, port=port, auto_open=True, auto_close=True)
self.modbus.unit_id(1)
# self.modbus.debug(True)
else:
self.modbus = ModbusClient()
self.modbus.host(ipaddr)
self.modbus.port(port)
self.modbus.unit_id(1)
self.modbus.open()
sunspecid = self.read_uint16(40070)
if sunspecid != 113:
print("Warning: Invalid SunspecID, wrong device ?")
# Format:
# "name : [register address, data type, unit 1]
self.registers = {
"CommonBlockRegister": {
"SunspecSID" : [40001, "uint32", 1],
"SunspecID" : [40070, "uint16", 1],
"AC_Phase-A_Current" : [40074, "float", 1],
"AC_Phase-B_Current" : [40076, "float", 1],
"AC_Phase-C_Current" : [40078, "float", 1],
"AC_Voltage_Phase-AB" : [40080, "float", 1],
"AC_Voltage_Phase-BC" : [40082, "float", 1],
"AC_Voltage_Phase-CA" : [40084, "float", 1],
"AC_Voltage_Phase-A-N" : [40086, "float", 1],
"AC_Voltage_Phase-B-N" : [40088, "float", 1],
"AC_Voltage_Phase-C-N" : [40090, "float", 1],
"AC_Output_Power" : [40092, "float", 1],
"AC_Frequency" : [40094, "float", 1],
"Cabinet_Temperature" : [40110, "float", 1],
"Operating_State" : [40118, "uint16", 1]
},
"StorageDevice": {
"Battery_capa" : [40141, "uint16", 1], #40143
"Battery_SunspecID" : [40354, "uint16", 1],
"Battery_SoC" : [40362, "uint16", 1], #40322 #40361
"Battery_Status" : [40365, "uint16", 1], #40325
"BatteryChargeRate" : [40356, "uint16", 1],
"BatteryMaxDischargePercent" : [40366, "uint16", 1],
"BatteryMaxChargePercent" : [40367, "uint16", 1],
"StorageControlMode" : [40359, "bitfield16", 1]
},
"MultipleMPPT": {
"MPPT_SunspecID" : [40264, "uint16", 1],
"MPPT_Current_Scale_Factor" : [40266, "uint16", 1],
"MPPT_Voltage_Scale_Factor" : [40267, "uint16", 1],
"MPPT_Power_Scale_Factor" : [40268, "uint16", 1],
"MPPT_1_DC_Current" : [40283, "uint16", 1],
"MPPT_1_DC_Voltage" : [40284, "uint16", 1],
"MPPT_1_DC_Power" : [40285, "uint16", 1],
"MPPT_1_Temperature" : [40290, "uint16", 1],
"MPPT_1_State" : [40291, "uint16", 1],
"MPPT_2_DC_Current" : [40303, "uint16", 1],
"MPPT_2_DC_Voltage" : [40304, "uint16", 1],
"MPPT_2_DC_Power" : [40305, "uint16", 1],
"MPPT_2_Temperature" : [40310, "uint16", 1],
"MPPT_2_State" : [40311, "uint16", 1]
},
"PowerMeter": {
"Meter_SunspecID" : [40070, "uint16", 200],
"Meter_Frequency" : [40096, "float", 200],
"Meter_Power_Total" : [40098, "float", 200],
"Meter_Power_L1" : [40100, "float", 200],
"Meter_Power_L2" : [40102, "float", 200],
"Meter_Power_L3" : [40104, "float", 200]
}
}
def read_uint16(self, addr):
regs = self.modbus.read_holding_registers(addr-1, 1)
if regs:
return int(regs[0])
else:
print("read_uint16() - error")
return False
def read_uint32(self, addr):
regs = self.modbus.read_holding_registers(addr-1, 2)
if regs:
return int(utils.word_list_to_long(regs, big_endian=True)[0])
else:
print("read_uint32() - error")
return False
def read_float(self, addr):
regs = self.modbus.read_holding_registers(addr-1, 2)
if not regs:
print("read_float() - error")
return False
list_32_bits = utils.word_list_to_long(regs, big_endian=True)
return float(utils.decode_ieee(list_32_bits[0]))
def read_data(self, parameter):
sectionMatch = None
for section, properties in self.registers.items():
for key, value in properties.items():
if (key == parameter):
sectionMatch = section
[register, datatype, unit_id] = self.registers[sectionMatch][parameter]
self.modbus.unit_id(unit_id)
if datatype == "float":
return self.read_float(register)
elif datatype == "uint32":
return self.read_uint32(register)
elif datatype == "uint16":
return self.read_uint16(register)
else:
return False
def read_section(self, section):
list = {}
for key, value in self.registers[section].items():
[register, datatype, unit_id] = value
data = None
self.modbus.unit_id(unit_id)
if datatype == "float":
data = self.read_float(register)
elif datatype == "uint32":
data = self.read_uint32(register)
elif datatype == "uint16":
data = self.read_uint16(register)
list |= { key : data }
return list
def write_float(self, addr, value):
floats_list = [value]
b32_l = [utils.encode_ieee(f) for f in floats_list]
b16_l = utils.long_list_to_word(b32_l, big_endian=False)
return self.modbus.write_multiple_registers(addr, b16_l)
def write_uint16(self, addr, value):
return self.modbus.write_single_register(addr, value)
def write_data(self, parameter, value):
sectionMatch = None
for section, properties in self.registers.items():
for key, val in properties.items():
if (key == parameter):
sectionMatch = section
[register, datatype, unit_id] = self.registers[sectionMatch][parameter]
self.modbus.unit_id(unit_id)
if datatype == "float":
return self.write_float(register, value)
elif datatype == "uint16":
return self.write_uint16(register, value)
else:
return False
def print_all(self):
print("Show all registers:")
for section, properties in self.registers.items():
for name, params in properties.items():
value = self.read_data(name)
print("{0:d}: {1:s} - {2:2.1f}".format(params[0], name, value))
# To search for undocument registers....
def print_raw(self):
print("Raw read 1000-2000:")
for i in range(1000,2000,1):
value = self.read_float(i)
if value:
print("{0:d}: {1:2.1f}".format(i, value))
#else:
# print("{0:d}: error".format(i))
def get_mppt_power(self):
mpppt_1_power = self.read_data('MPPT_1_DC_Power')
mpppt_2_power = self.read_data('MPPT_2_DC_Power')
power_scale = 10**(self.read_data('MPPT_Power_Scale_Factor')-65536)
return [mpppt_1_power * power_scale, mpppt_2_power * power_scale]
# Test program
if __name__ == "__main__":
gen24 = SymoGen24(ipaddr="fronius.ip", port="502")
# Sunspec ID (should be 113)
print(gen24.read_uint16(40070))
# Current AC Output Power
print(gen24.read_float(40092))
print(gen24.read_data("SunspecID"))
#gen24.print_all()
# gen24.print_raw()
print(gen24.read_uint16(40069))
# print(gen24.modbus.unit_id())
# gen24.modbus.unit_id(200)
# print(gen24.read_uint16(40070))
# print(gen24.read_float(40098))
print(gen24.get_mppt_power())
# gen24.modbus.unit_id(1)