diff --git a/modules/bezug_sungrow/main.sh b/modules/bezug_sungrow/main.sh
index 9ee22c106..0cc745199 100755
--- a/modules/bezug_sungrow/main.sh
+++ b/modules/bezug_sungrow/main.sh
@@ -13,7 +13,7 @@ fi
 if [[ "$pvwattmodul" == "wr_sungrow" ]]; then
 	echo "value read at pv modul" >/dev/null
 else
-	bash "$OPENWBBASEDIR/packages/legacy_run.sh" "modules.devices.sungrow.device" "counter" "$speicher1_ip" "$sungrowspeicherid" "$sungrowsr" >>"$MYLOGFILE" 2>&1
+	bash "$OPENWBBASEDIR/packages/legacy_run.sh" "modules.devices.sungrow.device" "counter" "$speicher1_ip" "$sungrowspeicherport" "$sungrowspeicherid" "$sungrowsr" >>"$MYLOGFILE" 2>&1
 	ret=$?
 fi
 
diff --git a/modules/speicher_sungrow/main.sh b/modules/speicher_sungrow/main.sh
index a9a634c35..e73f14ff3 100755
--- a/modules/speicher_sungrow/main.sh
+++ b/modules/speicher_sungrow/main.sh
@@ -10,7 +10,7 @@ else
 	MYLOGFILE="$RAMDISKDIR/bat.log"
 fi
 
-bash "$OPENWBBASEDIR/packages/legacy_run.sh" "modules.devices.sungrow.device" "bat" "$speicher1_ip" "$sungrowspeicherid" >>"$MYLOGFILE" 2>&1
+bash "$OPENWBBASEDIR/packages/legacy_run.sh" "modules.devices.sungrow.device" "bat" "$speicher1_ip" "$sungrowspeicherport" "$sungrowspeicherid" >>"$MYLOGFILE" 2>&1
 ret=$?
 
 openwbDebugLog $DMOD 2 "BAT RET: $ret"
diff --git a/modules/wr_sungrow/main.sh b/modules/wr_sungrow/main.sh
index 17df513c1..597f84fff 100755
--- a/modules/wr_sungrow/main.sh
+++ b/modules/wr_sungrow/main.sh
@@ -15,6 +15,6 @@ if [[ "$wattbezugmodul" == "bezug_sungrow" ]]; then
 else
 	read_counter=0
 fi
-bash "$OPENWBBASEDIR/packages/legacy_run.sh" "modules.devices.sungrow.device" "inverter" "$speicher1_ip" "$sungrowspeicherid" "1" "$read_counter" "$sungrowsr" >>"$MYLOGFILE" 2>&1
+bash "$OPENWBBASEDIR/packages/legacy_run.sh" "modules.devices.sungrow.device" "inverter" "$speicher1_ip" "$sungrowspeicherport" "$sungrowspeicherid" "1" "$read_counter" "$sungrowsr" >>"$MYLOGFILE" 2>&1
 
 cat "$RAMDISKDIR/pvwatt"
diff --git a/packages/modules/devices/sungrow/config.py b/packages/modules/devices/sungrow/config.py
index fd2268c0e..2fb6a668c 100644
--- a/packages/modules/devices/sungrow/config.py
+++ b/packages/modules/devices/sungrow/config.py
@@ -4,8 +4,9 @@
 
 
 class SungrowConfiguration:
-    def __init__(self, ip_address: Optional[str] = None, modbus_id: int = 1):
+    def __init__(self, ip_address: Optional[str] = None, port: int = 502, modbus_id: int = 1):
         self.ip_address = ip_address
+        self.port = port
         self.modbus_id = modbus_id
 
 
diff --git a/packages/modules/devices/sungrow/device.py b/packages/modules/devices/sungrow/device.py
index fbc2089ea..f00c00d5d 100644
--- a/packages/modules/devices/sungrow/device.py
+++ b/packages/modules/devices/sungrow/device.py
@@ -31,7 +31,8 @@ def __init__(self, device_config: Union[Dict, Sungrow]) -> None:
         try:
             self.device_config = dataclass_from_dict(Sungrow, device_config)
             ip_address = self.device_config.configuration.ip_address
-            self.client = modbus.ModbusTcpClient_(ip_address, 502)
+            port = self.device_config.configuration.port
+            self.client = modbus.ModbusTcpClient_(ip_address, port)
         except Exception:
             log.exception("Fehler im Modul " + self.device_config.name)
 
@@ -82,11 +83,12 @@ def update(self) -> None:
 
 
 def read_legacy(ip_address: str,
+                port: int,
                 modbus_id: int,
                 component_config: dict):
     device_config = Sungrow()
     device_config.configuration.ip_address = ip_address
-    device_config.configuration.port = 502
+    device_config.configuration.port = port
     device_config.configuration.modbus_id = modbus_id
     dev = Device(device_config)
     dev.add_component(component_config)
@@ -103,13 +105,14 @@ def read_legacy_counter(ip_address: str, modbus_id: int, version: int):
 
 
 def read_legacy_inverter(ip_address: str,
+                         port: int,
                          modbus_id: int,
                          num: int,
                          read_counter: int,
                          version: int):
     device_config = Sungrow()
     device_config.configuration.ip_address = ip_address
-    device_config.configuration.port = 502
+    device_config.configuration.port = port
     device_config.configuration.modbus_id = modbus_id
     dev = Device(device_config)
     dev.add_component(inverter.component_descriptor.configuration_factory(id=num))
diff --git a/web/settings/modulconfigpv.php b/web/settings/modulconfigpv.php
index 584af4552..08e369234 100644
--- a/web/settings/modulconfigpv.php
+++ b/web/settings/modulconfigpv.php
@@ -202,6 +202,13 @@
 									</div>
 								</div>
 							</div>
+							<div class="form-row mb-1">
+								<label for="sungrowspeicherport" class="col-md-4 col-form-label">Netzwerk-Port</label>
+								<div class="col">
+									<input class="form-control" type="number" min="1" step="1" name="sungrowspeicherport" id="sungrowspeicherport" value="<?php echo $sungrowspeicherportold ?>">
+									<span class="form-text small">Hier kann ein abweichender Netzwerk-Port angegeben werden, auf dem die Modbus/TCP Verbindung aufgebaut wird.Standard ist 502.</span>
+								</div>
+							</div>
 							<div class="form-row mb-1">
 								<label for="sungrowspeicherid" class="col-md-4 col-form-label">Geräteadresse</label>
 								<div class="col">