inverter was included

pv_inverter.py

@@ -0,0 +1,68 @@
+import time
+import pandas as pd
+from pymodbus.client import ModbusTcpClient
+
+class PvInverter:
+    def __init__(self, device_name: str, ip_address: str, port: int = 502, unit: int = 1):
+        self.device_name = device_name
+        self.ip = ip_address
+        self.port = port
+        self.unit = unit
+        self.client = None
+        self.registers = None
+
+        self.connect_to_modbus()
+        self.get_registers()
+
+    def connect_to_modbus(self):
+        # Timeout & retries optional, aber hilfreich:
+        self.client = ModbusTcpClient(self.ip, port=self.port, timeout=3.0, retries=3)
+        if not self.client.connect():
+            print("Verbindung zu Wechselrichter fehlgeschlagen.")
+            raise SystemExit(1)
+        print("Verbindung zu Wechselrichter erfolgreich.")
+
+        # WICHTIG: NICHT hier schließen!
+        # finally: self.client.close()  <-- entfernen
+
+    def close(self):
+        if self.client:
+            self.client.close()
+            self.client = None
+
+    def get_registers(self):
+        excel_path = "modbus_registers/pv_inverter_registers.xlsx"
+        xls = pd.ExcelFile(excel_path)
+        df_input_registers = xls.parse()
+        df_clean = df_input_registers[['MB Adresse', 'Beschreibung', 'Variabel Typ']].dropna()
+        df_clean['MB Adresse'] = df_clean['MB Adresse'].astype(int)
+
+        self.registers = {
+            row['MB Adresse']: {
+                'desc': row['Beschreibung'],
+                'type': 'REAL' if str(row['Variabel Typ']).upper() == 'REAL' else 'INT'
+            }
+            for _, row in df_clean.iterrows()
+        }
+
+    def get_state(self):
+        data = {'Zeit': time.strftime('%Y-%m-%d %H:%M:%S')}
+        for address, info in self.registers.items():
+            reg_type = info['type']
+            # Unit-ID mitgeben (wichtig bei pymodbus>=3)
+            result = self.client.read_holding_registers(
+                address=address,
+                count=2 if reg_type == 'REAL' else 1,
+                slave=self.unit  # pymodbus 2.x -> 'slave', nicht 'unit'
+            )
+            if result.isError():
+                print(f"Fehler beim Lesen von Adresse {address}: {result}")
+                continue
+
+            # Minimal invasiv: wie bei dir – erstes Register verwenden
+            value = result.registers[0]
+            print(f"Adresse {address} - {info['desc']}: {value}")
+            data[f"{address} - {info['desc']}"] = value
+        return data
+
+