diff --git a/lib/drawdxf.py b/lib/drawdxf.py
index 0a8be5c..7a9aa77 100644
--- a/lib/drawdxf.py
+++ b/lib/drawdxf.py
@@ -301,6 +301,13 @@ def write_excel_from_json(plines:Polylines, sens2cable: dict, outpath:str, with_
     length_summary = defaultdict(float)
     sensor_summary = defaultdict(int)
 
+    uv_sensor_count = defaultdict(lambda: defaultdict(int))
+    uv_artnr_count = defaultdict(lambda: defaultdict(int))
+    uv_artnr_length = defaultdict(lambda: defaultdict(float))
+    
+    seen_sensors = set()
+    uv_sensor_mapping = defaultdict(dict) 
+
     #Worksheet 1 - Kabellängen nach Kabel-ID
     ws1 = wb1.active
     ws1.title = "Length by ID"
@@ -311,17 +318,21 @@ def write_excel_from_json(plines:Polylines, sens2cable: dict, outpath:str, with_
     ws1.column_dimensions['C'].width = 15
     ws1.column_dimensions['D'].width = 25
 
-    seen_sensors = set()
 
     for pl in plines.kabel:
         length = round(pl.length /1000 , 1)                # Umrechnung von mm in m
+        uv_name = pl.id.split("-")[0]
+        sensor_name = pl.id.split("-")[-1] 
 
-        # Sensor Artikelnummern sammeln
-        sensor_name = pl.id.split("-")[-1]  # z.B. "BX0001"
+        # Globaler Sensor-Count (für erstes Sheet)
         if sensor_name not in seen_sensors:
             seen_sensors.add(sensor_name)
             sensor_summary[pl.s_artinr] += 1
 
+        # UV-spezifische Sensor-Mapping-Zwischenspeicherung
+        if sensor_name not in uv_sensor_mapping[uv_name]:
+            uv_sensor_mapping[uv_name][sensor_name] = pl.s_artinr
+
         for artnr in sens2cable[pl.id]:
             cable_name = ""
             if artnr.isdigit():
@@ -329,10 +340,17 @@ def write_excel_from_json(plines:Polylines, sens2cable: dict, outpath:str, with_
             ws1.append([pl.id, length, artnr, cable_name])
 
             if "MA" in pl.id:
-                length_summary[artnr] += math.ceil(length)      # Aufrunden von z.b. 10,3 auf 11 m (volle Meter!)       
+                length_summary[artnr] += math.ceil(length)      # Aufrunden von z.b. 10,3 auf 11 m (volle Meter!)   
+                uv_artnr_length[uv_name][artnr] += math.ceil(length)    
             
             else:
                 count_summary[artnr] += 1
+                uv_artnr_count[uv_name][artnr] += 1
+                
+    # UV-spezifische Sensorzählung (robust, 1x je Sensor pro UV)
+    for uv_name, sensor_dict in uv_sensor_mapping.items():
+        for sensor_name, artnr in sensor_dict.items():
+            uv_sensor_count[uv_name][artnr] += 1
     
     # Worksheet 2 - Kabelnummern und Stückzahlen
     ws2 = wb1.create_sheet("Cables SIVAS")
@@ -414,29 +432,87 @@ def write_excel_from_json(plines:Polylines, sens2cable: dict, outpath:str, with_
         wb2 = Workbook()
         ws1 = wb2.active
         ws1.title = "BOM"
-        ws1.append(["Type", "Art.-Number", "Name (SIVAS)", "Amount (pcs)", "Length (m)"])
+        ws1.append(["Art.-Number", "Name (SIVAS)", "Amount (pcs)", "Length (m)"])
 
-        # Alle Summaries kombinieren
-        all_summaries = set(count_summary) | set(length_summary) | set(sensor_summary)
-        
-        for artnr in sorted(all_summaries):
+        # Sensoren separat auflisten
+        for artnr in sorted(sensor_summary.keys()):
             name = bezeichner_cfg["Sivasnummern"].get(artnr, "")
-            count = sensor_summary.get(artnr, count_summary.get(artnr, ""))
-            length = length_summary.get(artnr, "")
-            typ = "Sensor" if artnr in sensor_summary else "Kabel"
-
+            count = sensor_summary[artnr]
             if artnr == "":
                 name = "Keine Artikelnummer vergeben. Layout prüfen."
-            elif artnr != "" and name =="":
-                name = (f"Kein Eintrag zu Art.-Nr: {artnr} in bezeichner.cfg.")
+            elif name == "":
+                name = f"Kein Eintrag zu Art.-Nr: {artnr} in bezeichner.cfg."
             ws1.append([
-                typ,
                 artnr,
                 name,
                 count,
-                length if typ == "Kabel" else ""
+                ""  # Sensoren haben keine Länge
             ])
 
+        # Kabel separat auflisten
+        for artnr in sorted(set(count_summary.keys()) | set(length_summary.keys())):
+            name = bezeichner_cfg["Sivasnummern"].get(artnr, "")
+            count = count_summary.get(artnr, "")
+            length = length_summary.get(artnr, "")
+            if artnr == "":
+                name = "Keine Artikelnummer vergeben. Layout prüfen."
+            elif name == "":
+                name = f"Kein Eintrag zu Art.-Nr: {artnr} in bezeichner.cfg."
+            ws1.append([
+                artnr,
+                name,
+                count,
+                length
+            ])
+
+        # Neues Sheet für UV-spezifische Übersicht
+        ws_uv = wb2.create_sheet("BOM by UV")
+        ws_uv.append(["UV", "Art.-Number", "Name (SIVAS)", "Amount (pcs)", "Length (m)"])
+
+        all_uvs = set(uv_sensor_count.keys()) | set(uv_artnr_count.keys()) | set(uv_artnr_length.keys())
+
+        for uv in sorted(all_uvs):
+            all_artnrs = set()
+            all_artnrs.update(uv_sensor_count.get(uv, {}).keys())
+            all_artnrs.update(uv_artnr_count.get(uv, {}).keys())
+            all_artnrs.update(uv_artnr_length.get(uv, {}).keys())
+
+            for artnr in sorted(all_artnrs):
+                sensor_amount = uv_sensor_count.get(uv, {}).get(artnr, 0)
+                cable_count = uv_artnr_count.get(uv, {}).get(artnr, 0)
+                cable_length = uv_artnr_length.get(uv, {}).get(artnr, 0)
+                name = bezeichner_cfg["Sivasnummern"].get(artnr, "")
+
+                # Sensoren separat eintragen (Anzahl)
+                if sensor_amount > 0:
+                    ws_uv.append([
+                        uv,
+                        artnr,
+                        name,
+                        sensor_amount,
+                        ""
+                    ])
+
+                # a) Nur Anzahl, wenn kein "MA" im Namen
+                if cable_count > 0 and cable_length == 0:
+                    ws_uv.append([
+                        uv,
+                        artnr,
+                        name,
+                        cable_count,
+                        ""
+                    ])
+
+                # b) Nur Länge, wenn Kabel mit "MA" (Meterware)
+                if cable_length > 0:
+                    ws_uv.append([
+                        uv,
+                        artnr,
+                        name,
+                        "",
+                        cable_length
+                    ])
+
         bom_path = outpath.replace("_cables.xlsx", "_BOM.xlsx")
         wb2.save(bom_path)
         print(f"BOM saved as an excel file")