Add required pymodbus version startup check

custom_components/solaredge_modbus_multi/const.py

@@ -9,6 +9,9 @@
 DOMAIN = "solaredge_modbus_multi"
 DEFAULT_NAME = "SolarEdge"
 
+# raise a startup exception if pymodbus version is less than this
+PYMODBUS_REQUIRED_VERSION = "3.8.3"
+
 # units missing in homeassistant core
 ENERGY_VOLT_AMPERE_HOUR: Final = "VAh"
 ENERGY_VOLT_AMPERE_REACTIVE_HOUR: Final = "varh"

custom_components/solaredge_modbus_multi/hub.py

@@ -19,6 +19,7 @@
     BATTERY_REG_BASE,
     DOMAIN,
     METER_REG_BASE,
+    PYMODBUS_REQUIRED_VERSION,
     ConfDefaultFlag,
     ConfDefaultInt,
     ConfDefaultStr,
@@ -202,6 +203,18 @@ def __init__(
     async def _async_init_solaredge(self) -> None:
         """Detect devices and load initial modbus data from inverters."""
 
+        pymodbus_version_tuple = self._safe_version_tuple(self.pymodbus_version)
+        required_version_tuple = self._safe_version_tuple(
+            self.pymodbus_required_version
+        )
+
+        if pymodbus_version_tuple < required_version_tuple:
+            raise HubInitFailed(
+                f"pymodbus version must be at least {self.pymodbus_required_version}, "
+                f"but {self.pymodbus_version} is installed. Please remove other custom "
+                "integrations that depend on an older version of pymodbus and restart."
+            )
+
         if not self.is_connected:
             ir.async_create_issue(
                 self._hass,
@@ -628,6 +641,15 @@ async def write_registers(self, unit: int, address: int, payload) -> None:
                 self.disconnect()
                 raise ModbusWriteError(result)
 
+    @staticmethod
+    def _safe_version_tuple(version_str: str) -> tuple[int, ...]:
+        try:
+            version_parts = version_str.split(".")
+            version_tuple = tuple(int(part) for part in version_parts)
+            return version_tuple
+        except ValueError:
+            raise ValueError(f"Invalid version string: {version_str}")
+
     @property
     def online(self):
         return self._online
@@ -723,6 +745,10 @@ def number_of_inverters(self) -> int:
     def sleep_after_write(self) -> int:
         return self._sleep_after_write
 
+    @property
+    def pymodbus_required_version(self) -> str:
+        return PYMODBUS_REQUIRED_VERSION
+
     @property
     def pymodbus_version(self) -> str:
         return self._pymodbus_version

custom_components/solaredge_modbus_multi/manifest.json

@@ -10,5 +10,5 @@
   "issue_tracker": "https://github.com/WillCodeForCats/solaredge-modbus-multi/issues",
   "loggers": ["custom_components.solaredge_modbus_multi"],
   "requirements": ["pymodbus>=3.8.3"],
-  "version": "3.1.1"
+  "version": "3.1.2-pre.2"
 }