Huawei: fix baudrate and register address and rs485 (#3062)

templates/definition/meter/huawei-sun2000-rs485.yaml

@@ -1,14 +1,16 @@
-template: huawei-sun2000-8ktl
+template: huawei-sun2000-rs485
+covers:
+  - huawei-sun2000-8ktl
 products:
   - brand: Huawei
     description:
-      generic: SUN2000-8KTL
+      generic: SUN2000 via RS485 Modbus
 params:
   - name: usage
     choice: ["pv"]
   - name: modbus
     choice: ["rs485"]
-    baudrate: 19200
+    baudrate: 9600
 render: |
   type: custom
   power:
@@ -16,6 +18,6 @@ render: |
     {{include "modbus" . | indent 2}}
     # register details
     register:
-      address: 40525
+      address: 32080 # Active generation power AC
       type: holding
       decode: int32