248 lines
8.8 KiB
Python
248 lines
8.8 KiB
Python
#!/usr/bin/env python
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"""
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Victron Energy MPPT plugin
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Author: Xavier Beaudouin
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Requirements:
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1. multiplus + GX
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2. pymodbus AND pymodbusTCP
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"""
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"""
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<plugin key="VictronEnergy_GX_MPPT" name="Victron Energy MPPT over GX + Modbus" author="Xavier Beaudouin" version="0.0.2" externallink="https://github.com/xbeaudouin/victron-energy-domoticz/mppt">
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<params>
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<param field="Address" label="GX IP Address" width="150px" required="true" />
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<param field="Port" label="GX Modbus Port Number" width="100px" required="true" default="502" />
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<param field="Mode3" label="Modbus address" width="100px" required="true" default="229" />
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<param field="Mode6" label="Debug" width="100px">
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<options>
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<option label="True" value="Debug"/>
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<option label="False" value="Normal" default="true" />
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</options>
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</param>
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</params>
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</plugin>
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"""
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import Domoticz
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import sys
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sys.path.append('/usr/local/lib/python3.4/dist-packages')
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sys.path.append('/usr/local/lib/python3.5/dist-packages')
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sys.path.append('/usr/local/lib/python3.6/dist-packages')
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sys.path.append('/usr/local/lib/python3.7/dist-packages')
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sys.path.append('/usr/local/lib/python3.8/dist-packages')
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sys.path.append('/usr/local/lib/python3.9/dist-packages')
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sys.path.append('/usr/local/lib/python3.10/dist-packages')
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import pymodbus
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from pyModbusTCP.client import ModbusClient
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from pymodbus.constants import Endian
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from pymodbus.payload import BinaryPayloadDecoder
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#
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# Domoticz shows graphs with intervals of 5 minutes.
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# When collecting information from the inverter more frequently than that, then it makes no sense to only show the last value.
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#
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# The Average class can be used to calculate the average value based on a sliding window of samples.
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# The number of samples stored depends on the interval used to collect the value from the inverter itself.
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#
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class Average:
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def __init__(self):
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self.samples = []
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self.max_samples = 30
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def set_max_samples(self, max):
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self.max_samples = max
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if self.max_samples < 1:
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self.max_samples = 1
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def update(self, new_value, scale = 0):
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self.samples.append(new_value * (10 ** scale))
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while (len(self.samples) > self.max_samples):
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del self.samples[0]
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Domoticz.Debug("Average: {} - {} values".format(self.get(), len(self.samples)))
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def get(self):
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return sum(self.samples) / len(self.samples)
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#
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# Domoticz shows graphs with intervals of 5 minutes.
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# When collecting information from the inverter more frequently than that, then it makes no sense to only show the last value.
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#
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# The Maximum class can be used to calculate the highest value based on a sliding window of samples.
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# The number of samples stored depends on the interval used to collect the value from the inverter itself.
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#
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class Maximum:
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def __init__(self):
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self.samples = []
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self.max_samples = 30
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def set_max_samples(self, max):
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self.max_samples = max
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if self.max_samples < 1:
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self.max_samples = 1
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def update(self, new_value, scale = 0):
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self.samples.append(new_value * (10 ** scale))
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while (len(self.samples) > self.max_samples):
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del self.samples[0]
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Domoticz.Debug("Maximum: {} - {} values".format(self.get(), len(self.samples)))
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def get(self):
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return max(self.samples)
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# Plugin itself
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class BasePlugin:
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def __init__(self):
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# Voltage for last 5 minutes
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self.voltage=Average()
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# Current for last 5 minutes
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self.current=Average()
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# Power factor for last 5 minutes
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self.power=Average()
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return
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def onStart(self):
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try:
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Domoticz.Log("Victron Energy MPPT over GX + Modbus loaded!, using python v" + sys.version[:6] + " and pymodbus v" + pymodbus.__version__)
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except:
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Domoticz.Log("Victron Energy MPPT over GX + Modbus loaded!")
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# Check dependancies
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try:
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if (float(Parameters["DomoticzVersion"][:6]) < float("2020.2")): Domoticz.Error("WARNING: Domoticz version is outdated or not supported. Please update!")
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if (float(sys.version[:1]) < 3): Domoticz.Error("WARNING: Python3 should be used !")
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if (float(pymodbus.__version__[:3]) < float("2.3")): Domoticz.Error("WARNING: pymodbus version is outdated, please update!")
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except:
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Domoticz.Error("Warning ! Dependancies could not be checked !")
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# Parse parameters
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# Debug
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if Parameters["Mode6"] == "Debug":
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Domoticz.Debugging(1)
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else:
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Domoticz.Debugging(0)
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self.IPAddress = Parameters["Address"]
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self.IPPort = Parameters["Port"]
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self.MBAddr = int(Parameters["Mode3"])
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Domoticz.Debug("Query IP " + self.IPAddress + ":" + str(self.IPPort) +" on device : "+str(self.MBAddr))
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# Create the devices if they does not exists
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if 1 not in Devices:
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Domoticz.Device(Name="Voltage", Unit=1, TypeName="Voltage", Used=0).Create()
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if 2 not in Devices:
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Domoticz.Device(Name="Current", Unit=2, TypeName="Current (Single)", Used=0).Create()
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if 3 not in Devices:
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Options = { "Custom": "1;W" }
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Domoticz.Device(Name="Power", Unit=3, TypeName="Custom", Used=0, Options=Options).Create()
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if 4 not in Devices:
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Domoticz.Device(Name="Total Energy", Unit=4, Type=243, Subtype=29, Used=0).Create()
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return
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def onStop(self):
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Domoticz.Debugging(0)
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def onHeartbeat(self):
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Domoticz.Debug(" Interface : IP="+self.IPAddress +", Port="+str(self.IPPort)+" ID="+str(self.MBAddr))
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try:
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client = ModbusClient(host=self.IPAddress, port=self.IPPort, unit_id=self.MBAddr, auto_open=True, auto_close=True, timeout=2)
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except:
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Domoticz.Error("Error connecting to TCP/Interface on address : "+self.IPaddress+":"+str(self.IPPort))
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# Set value to 0 -> Error on all devices
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Devices[1].Update(1, "0")
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Devices[2].Update(1, "0")
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Devices[3].Update(1, "0")
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Devices[4].Update(1, "0")
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total_e = "0"
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power = "0"
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# Voltage
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value = round (getmodbus16(776, client) / 100.0, 3)
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self.voltage.update(value)
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value = self.voltage.get()
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Devices[1].Update(1, str(value))
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# Current
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value = round (getmodbus16(777,client) / 10.0, 3)
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self.current.update(value)
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value = self.current.get()
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Devices[2].Update(1, str(value))
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# Power
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value = round (getmodbus16(789, client) / 10.0, 3)
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self.power.update(value)
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value = self.power.get()
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Devices[3].Update(1, str(value))
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power = str(value)
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# Total Energy
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total_e = str(getmodbus16(790,client)*100)
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Devices[4].Update(1, sValue=power+";"+total_e)
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global _plugin
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_plugin = BasePlugin()
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def onStart():
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global _plugin
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_plugin.onStart()
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def onStop():
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global _plugin
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_plugin.onStop()
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def onHeartbeat():
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global _plugin
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_plugin.onHeartbeat()
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# Generic helper functions
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def DumpConfigToLog():
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for x in Parameters:
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if Parameters[x] != "":
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Domoticz.Debug( "'" + x + "':'" + str(Parameters[x]) + "'")
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Domoticz.Debug("Device count: " + str(len(Devices)))
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for x in Devices:
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Domoticz.Debug("Device: " + str(x) + " - " + str(Devices[x]))
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Domoticz.Debug("Device ID: '" + str(Devices[x].ID) + "'")
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Domoticz.Debug("Device Name: '" + Devices[x].Name + "'")
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Domoticz.Debug("Device nValue: " + str(Devices[x].nValue))
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Domoticz.Debug("Device sValue: '" + Devices[x].sValue + "'")
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Domoticz.Debug("Device LastLevel: " + str(Devices[x].LastLevel))
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return
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# get Modbug 16 bits values
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def getmodbus16(register, client):
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value = 0
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try:
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data = client.read_holding_registers(register, 1)
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Domoticz.Debug("Data from register "+str(register)+": "+str(data))
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#decoder = BinaryPayloadDecoder.fromRegisters(data, byteorder=Endian.Big, wordorder=Endian.Big)
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decoder = BinaryPayloadDecoder.fromRegisters(data, byteorder=Endian.BIG, wordorder=Endian.BIG)
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value = decoder.decode_16bit_int()
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except:
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Domoticz.Error("Error getting data from "+str(register) + ", try 1")
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try:
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data = client.read_holding_registers(register, 1)
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Domoticz.Debug("Data from register "+str(register)+": "+str(data))
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#decoder = BinaryPayloadDecoder.fromRegisters(data, byteorder=Endian.Big, wordorder=Endian.Big)
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decoder = BinaryPayloadDecoder.fromRegisters(data, byteorder=Endian.BIG, wordorder=Endian.BIG)
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value = decoder.decode_16bit_int()
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except:
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Domoticz.Error("Error getting data from "+str(register) + ", try 2")
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return value
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