Victron Energy: add param for grid-meter VRM instance (#15625)

templates/definition/meter/victron-energy.yaml

@@ -13,6 +13,12 @@ params:
     default: 502
   - name: capacity
     advanced: true
+  - name: meterid # grid meter VRM instance
+    usages: ["grid"]
+    default: 30
+    help:
+      de: "Grid-Energiezähler VRM instance- kann im VRM Portal oder im RemoteUI ausgelesen werden."
+      en: "Grid-Meter VRM instance- can be read out in VRM portal or via remoteUI."
   # battery control
   - name: minsoc
     type: number
@@ -50,7 +56,7 @@ render: |
   currents:
     - source: modbus
       uri: {{ .host }}:{{ .port }}
-      id: 30
+      id: {{ .meterid }}
       register:
         address: 2617 # L1 grid current
         type: input
@@ -58,7 +64,7 @@ render: |
       scale: 0.1
     - source: modbus
       uri: {{ .host }}:{{ .port }}
-      id: 30
+      id: {{ .meterid }}
       register:
         address: 2619 # L2 grid current
         type: input
@@ -66,7 +72,7 @@ render: |
       scale: 0.1
     - source: modbus
       uri: {{ .host }}:{{ .port }}
-      id: 30
+      id: {{ .meterid }}
       register:
         address: 2621 # L3 grid current
         type: input