diff --git a/components/main/kabelueberwachung/kue705FO/Charts/TDRChart/TDRChart.tsx b/components/main/kabelueberwachung/kue705FO/Charts/TDRChart/TDRChart.tsx
index 8cdcca3..c2f73a9 100644
--- a/components/main/kabelueberwachung/kue705FO/Charts/TDRChart/TDRChart.tsx
+++ b/components/main/kabelueberwachung/kue705FO/Charts/TDRChart/TDRChart.tsx
@@ -9,6 +9,7 @@ import { Chart, registerables } from "chart.js";
 import "chartjs-adapter-date-fns";
 import { getColor } from "../../../../../../utils/colors";
 import TDRChartActionBar from "./TDRChartActionBar";
+import { fetchReferenceCurveBySlotThunk } from "../../../../../../redux/thunks/fetchReferenceCurveBySlotThunk";
 
 const TDRChart: React.FC<{ isFullScreen: boolean }> = ({ isFullScreen }) => {
   const dispatch = useDispatch<AppDispatch>();
@@ -43,12 +44,18 @@ const TDRChart: React.FC<{ isFullScreen: boolean }> = ({ isFullScreen }) => {
       ? tdrDataById[selectedId]
       : [];
   //--------------------------------
-
   const referenceChartData = useSelector((state: RootState) =>
     selectedSlot !== null
-      ? state.tdrReferenceChart.referenceData[selectedSlot] || []
+      ? state.tdrReferenceChartDataBySlot.referenceData[selectedSlot] || []
       : []
   );
+  //--------------------------------
+  useEffect(() => {
+    if (selectedSlot !== null) {
+      dispatch(fetchReferenceCurveBySlotThunk(selectedSlot));
+    }
+  }, [selectedSlot, dispatch]);
+
   //--------------------------------
   const tdmChartData = useSelector(
     (state: RootState) => state.tdmSingleChart.data
diff --git a/config/webVersion.ts b/config/webVersion.ts
index 9b1471f..499819a 100644
--- a/config/webVersion.ts
+++ b/config/webVersion.ts
@@ -6,5 +6,5 @@
 2: Patch oder Hotfix (Bugfixes oder kleine Änderungen).
 
 */
-const webVersion = "1.6.185";
+const webVersion = "1.6.186";
 export default webVersion;
diff --git a/redux/slices/tdrReferenceChartDataBySlotSlice.ts b/redux/slices/tdrReferenceChartDataBySlotSlice.ts
new file mode 100644
index 0000000..672aa1b
--- /dev/null
+++ b/redux/slices/tdrReferenceChartDataBySlotSlice.ts
@@ -0,0 +1,41 @@
+// /redux/slices/tdrReferenceChartDataBySlotSlice.ts
+import { createSlice, PayloadAction } from "@reduxjs/toolkit";
+import { fetchReferenceCurveBySlotThunk } from "../thunks/fetchReferenceCurveBySlotThunk";
+
+interface TDRReferenceChartState {
+  referenceData: { [slot: number]: any[] };
+  loading: boolean;
+  error: string | null;
+}
+
+const initialState: TDRReferenceChartState = {
+  referenceData: {},
+  loading: false,
+  error: null,
+};
+
+const tdrReferenceChartDataBySlotSlice = createSlice({
+  name: "tdrReferenceChartDataBySlot",
+  initialState,
+  reducers: {},
+  extraReducers: (builder) => {
+    builder
+      .addCase(fetchReferenceCurveBySlotThunk.pending, (state) => {
+        state.loading = true;
+        state.error = null;
+      })
+      .addCase(
+        fetchReferenceCurveBySlotThunk.fulfilled,
+        (state, action: PayloadAction<{ slot: number; data: any[] }>) => {
+          state.loading = false;
+          state.referenceData[action.payload.slot] = action.payload.data;
+        }
+      )
+      .addCase(fetchReferenceCurveBySlotThunk.rejected, (state, action) => {
+        state.loading = false;
+        state.error = action.error.message ?? "Unbekannter Fehler";
+      });
+  },
+});
+
+export default tdrReferenceChartDataBySlotSlice.reducer;
diff --git a/redux/store.ts b/redux/store.ts
index 41c6d3e..9c1fc95 100644
--- a/redux/store.ts
+++ b/redux/store.ts
@@ -20,6 +20,7 @@ import tdrDataByIdReducer from "./slices/tdrDataByIdSlice";
 import kueDataReducer from "./slices/kueDataSlice";
 import selectedChartDataReducer from "./slices/selectedChartDataSlice";
 import tdmSingleChartReducer from "./slices/tdmSingleChartSlice";
+import tdrReferenceChartDataBySlotReducer from "./slices/tdrReferenceChartDataBySlotSlice";
 
 const store = configureStore({
   reducer: {
@@ -42,6 +43,7 @@ const store = configureStore({
     kueData: kueDataReducer,
     selectedChartData: selectedChartDataReducer,
     tdmSingleChart: tdmSingleChartReducer,
+    tdrReferenceChartDataBySlot: tdrReferenceChartDataBySlotReducer,
   },
 });
 
diff --git a/redux/thunks/fetchReferenceCurveBySlotThunk.ts b/redux/thunks/fetchReferenceCurveBySlotThunk.ts
new file mode 100644
index 0000000..a4be147
--- /dev/null
+++ b/redux/thunks/fetchReferenceCurveBySlotThunk.ts
@@ -0,0 +1,12 @@
+// /redux/thunks/fetchAllTDRReferenceChartThunk.ts
+import { createAsyncThunk } from "@reduxjs/toolkit";
+import { fetchTDRReferenceCurve } from "../../services/fetchTDRReferenceCurve";
+
+export const fetchReferenceCurveBySlotThunk = createAsyncThunk(
+  "tdrReferenceChart/fetchBySlot",
+  async (slot: number) => {
+    const data = await fetchTDRReferenceCurve(slot);
+    if (!data) throw new Error("Keine Referenzdaten gefunden");
+    return { slot, data };
+  }
+);
diff --git a/services/fetchTDRReferenceCurve.ts b/services/fetchTDRReferenceCurve.ts
new file mode 100644
index 0000000..f2f2b5d
--- /dev/null
+++ b/services/fetchTDRReferenceCurve.ts
@@ -0,0 +1,24 @@
+// /services/fetchTDRReferenceCurve.ts
+export const fetchTDRReferenceCurve = async (
+  slot: number
+): Promise<any[] | null> => {
+  if (typeof window === "undefined") return null;
+
+  const isDev = process.env.NEXT_PUBLIC_NODE_ENV === "development";
+
+  const url = isDev
+    ? `/CPLmockData/tdr-reference-curves/slot${slot}.json`
+    : `${window.location.origin}/CPL?Service/empty.acp&TDRR=${slot}`;
+
+  try {
+    const res = await fetch(url);
+    if (!res.ok) throw new Error(`HTTP ${res.status}`);
+    return await res.json();
+  } catch (error) {
+    console.error(
+      `❌ Fehler beim Laden der Referenzkurve für Slot ${slot}:`,
+      error
+    );
+    return null;
+  }
+};