🚧 Web UI

src/wago_sim/datastore.py

@@ -176,6 +176,19 @@ class WagoDatastore:
         self._out_words = [0] * len(self._out_words)
         self._notify()
 
+    def reset_images(self) -> None:
+        """Reconfiguration (§11): zero both images before a layout rebuild.
+
+        The arrays keep their full 750-362 geometry (256+764 words per
+        direction); the VirtualNode re-applies the digital word offsets
+        and the module layout on top.
+        """
+        self._in_words = [0] * (AREA1_INPUT_WORDS + AREA2_INPUT_WORDS)
+        self._out_words = [0] * (AREA1_OUTPUT_WORDS + AREA2_OUTPUT_WORDS)
+        self._digital_in_word_offset = 0
+        self._digital_out_word_offset = 0
+        self._notify()
+
     # -- word area dispatch ---------------------------------------------------
 
     def read_words(self, address: int, count: int) -> list[int] | ExceptionResponse: