Huawei SUN2000: handle cascading inverters

templates/definition/meter/huawei-sun2000.yaml

@@ -32,6 +32,16 @@ params:
     advanced: true
   - name: capacity
     advanced: true
+  - name: forceaccharging
+    default: false
+    advanced: true
+    type: bool
+    description:
+      en: Inverter cascade
+      de: Wechselrichterkaskade
+    help:
+      en: Keep AC charging active to charge the storage from other inverters via AC. Prevents stand-by.
+      de: AC-Laden bleibt aktiv zum Laden des Speichers aus anderen AC Quellen für Wechselrichterkaskaden. Verhindert Stand-by.
 render: |
   type: custom
   {{- if eq .usage "grid" }}
@@ -164,6 +174,7 @@ render: |
                 address: 47100 # Forcible charge/discharge
                 type: writesingle
                 encoding: uint16
+          {{- if eq .forceaccharging "false" }}
           - source: const
             value: 0 # Disable
             set:
@@ -173,6 +184,7 @@ render: |
                 address: 47087 # Charge from grid
                 type: writesingle
                 encoding: uint16
+          {{- end }}
       - case: 2 # hold
         set:
           source: sequence